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#pragma once // Define math constants for Visual Studio https://docs.microsoft.com/en-us/cpp/c-runtime-library/math-constants #if defined(_MSC_VER) #define _USE_MATH_DEFINES #endif // Python headers must be included before any system headers, since // they define _POSIX_C_SOURCE #if defined(_WIN32) && defined(_DEBUG) // Python.h will try to load the library debug version, but that is not installed by default. #undef _DEBUG #include #define _DEBUG #else #include #endif #include #include #include #include #include #include #include #include // requires c++11 support #include #include // std::stod #ifndef WITHOUT_NUMPY # define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION # include # ifdef WITH_OPENCV # include # endif // WITH_OPENCV /* * A bunch of constants were removed in OpenCV 4 in favour of enum classes, so * define the ones we need here. */ # if CV_MAJOR_VERSION > 3 # define CV_BGR2RGB cv::COLOR_BGR2RGB # define CV_BGRA2RGBA cv::COLOR_BGRA2RGBA # endif #endif // WITHOUT_NUMPY #if PY_MAJOR_VERSION >= 3 # define PyString_FromString PyUnicode_FromString # define PyInt_FromLong PyLong_FromLong # define PyString_FromString PyUnicode_FromString #endif namespace matplotlibcpp { namespace detail { static std::string s_backend; struct _interpreter { PyObject* s_python_function_arrow; PyObject *s_python_function_show; PyObject *s_python_function_close; PyObject *s_python_function_draw; PyObject *s_python_function_pause; PyObject *s_python_function_save; PyObject *s_python_function_figure; PyObject *s_python_function_fignum_exists; PyObject *s_python_function_plot; PyObject *s_python_function_quiver; PyObject* s_python_function_contour; PyObject *s_python_function_semilogx; PyObject *s_python_function_semilogy; PyObject *s_python_function_loglog; PyObject *s_python_function_fill; PyObject *s_python_function_fill_between; PyObject *s_python_function_hist; PyObject *s_python_function_imshow; PyObject *s_python_function_scatter; PyObject *s_python_function_boxplot; PyObject *s_python_function_subplot; PyObject *s_python_function_subplot2grid; PyObject *s_python_function_legend; PyObject *s_python_function_xlim; PyObject *s_python_function_ion; PyObject *s_python_function_ginput; PyObject *s_python_function_ylim; PyObject *s_python_function_title; PyObject *s_python_function_axis; PyObject *s_python_function_axhline; PyObject *s_python_function_axvline; PyObject *s_python_function_axvspan; PyObject *s_python_function_xlabel; PyObject *s_python_function_ylabel; PyObject *s_python_function_gca; PyObject *s_python_function_xticks; PyObject *s_python_function_yticks; PyObject* s_python_function_margins; PyObject *s_python_function_tick_params; PyObject *s_python_function_grid; PyObject* s_python_function_cla; PyObject *s_python_function_clf; PyObject *s_python_function_errorbar; PyObject *s_python_function_annotate; PyObject *s_python_function_tight_layout; PyObject *s_python_colormap; PyObject *s_python_empty_tuple; PyObject *s_python_function_stem; PyObject *s_python_function_xkcd; PyObject *s_python_function_text; PyObject *s_python_function_suptitle; PyObject *s_python_function_bar; PyObject *s_python_function_barh; PyObject *s_python_function_colorbar; PyObject *s_python_function_subplots_adjust; PyObject *s_python_function_rcparams; PyObject *s_python_function_spy; /* For now, _interpreter is implemented as a singleton since its currently not possible to have multiple independent embedded python interpreters without patching the python source code or starting a separate process for each. [1] Furthermore, many python objects expect that they are destructed in the same thread as they were constructed. [2] So for advanced usage, a `kill()` function is provided so that library users can manually ensure that the interpreter is constructed and destroyed within the same thread. 1: http://bytes.com/topic/python/answers/793370-multiple-independent-python-interpreters-c-c-program 2: https://github.com/lava/matplotlib-cpp/pull/202#issue-436220256 */ static _interpreter& get() { return interkeeper(false); } static _interpreter& kill() { return interkeeper(true); } // Stores the actual singleton object referenced by `get()` and `kill()`. static _interpreter& interkeeper(bool should_kill) { static _interpreter ctx; if (should_kill) ctx.~_interpreter(); return ctx; } PyObject* safe_import(PyObject* module, std::string fname) { PyObject* fn = PyObject_GetAttrString(module, fname.c_str()); if (!fn) throw std::runtime_error(std::string("Couldn't find required function: ") + fname); if (!PyFunction_Check(fn)) throw std::runtime_error(fname + std::string(" is unexpectedly not a PyFunction.")); return fn; } private: #ifndef WITHOUT_NUMPY # if PY_MAJOR_VERSION >= 3 void *import_numpy() { import_array(); // initialize C-API return NULL; } # else void import_numpy() { import_array(); // initialize C-API } # endif #endif _interpreter() { // optional but recommended #if PY_MAJOR_VERSION >= 3 wchar_t name[] = L"plotting"; #else char name[] = "plotting"; #endif Py_SetProgramName(name); Py_Initialize(); wchar_t const *dummy_args[] = {L"Python", NULL}; // const is needed because literals must not be modified wchar_t const **argv = dummy_args; int argc = sizeof(dummy_args)/sizeof(dummy_args[0])-1; #if PY_MAJOR_VERSION >= 3 PySys_SetArgv(argc, const_cast(argv)); #else PySys_SetArgv(argc, (char **)(argv)); #endif #ifndef WITHOUT_NUMPY import_numpy(); // initialize numpy C-API #endif PyObject* matplotlibname = PyString_FromString("matplotlib"); PyObject* pyplotname = PyString_FromString("matplotlib.pyplot"); PyObject* cmname = PyString_FromString("matplotlib.cm"); PyObject* pylabname = PyString_FromString("pylab"); if (!pyplotname || !pylabname || !matplotlibname || !cmname) { throw std::runtime_error("couldnt create string"); } PyObject* matplotlib = PyImport_Import(matplotlibname); Py_DECREF(matplotlibname); if (!matplotlib) { PyErr_Print(); throw std::runtime_error("Error loading module matplotlib!"); } // matplotlib.use() must be called *before* pylab, matplotlib.pyplot, // or matplotlib.backends is imported for the first time if (!s_backend.empty()) { PyObject_CallMethod(matplotlib, const_cast("use"), const_cast("s"), s_backend.c_str()); } PyObject* pymod = PyImport_Import(pyplotname); Py_DECREF(pyplotname); if (!pymod) { throw std::runtime_error("Error loading module matplotlib.pyplot!"); } s_python_colormap = PyImport_Import(cmname); Py_DECREF(cmname); if (!s_python_colormap) { throw std::runtime_error("Error loading module matplotlib.cm!"); } PyObject* pylabmod = PyImport_Import(pylabname); Py_DECREF(pylabname); if (!pylabmod) { throw std::runtime_error("Error loading module pylab!"); } s_python_function_arrow = safe_import(pymod, "arrow"); s_python_function_show = safe_import(pymod, "show"); s_python_function_close = safe_import(pymod, "close"); s_python_function_draw = safe_import(pymod, "draw"); s_python_function_pause = safe_import(pymod, "pause"); s_python_function_figure = safe_import(pymod, "figure"); s_python_function_fignum_exists = safe_import(pymod, "fignum_exists"); s_python_function_plot = safe_import(pymod, "plot"); s_python_function_quiver = safe_import(pymod, "quiver"); s_python_function_contour = safe_import(pymod, "contour"); s_python_function_semilogx = safe_import(pymod, "semilogx"); s_python_function_semilogy = safe_import(pymod, "semilogy"); s_python_function_loglog = safe_import(pymod, "loglog"); s_python_function_fill = safe_import(pymod, "fill"); s_python_function_fill_between = safe_import(pymod, "fill_between"); s_python_function_hist = safe_import(pymod,"hist"); s_python_function_scatter = safe_import(pymod,"scatter"); s_python_function_boxplot = safe_import(pymod,"boxplot"); s_python_function_subplot = safe_import(pymod, "subplot"); s_python_function_subplot2grid = safe_import(pymod, "subplot2grid"); s_python_function_legend = safe_import(pymod, "legend"); s_python_function_xlim = safe_import(pymod, "xlim"); s_python_function_ylim = safe_import(pymod, "ylim"); s_python_function_title = safe_import(pymod, "title"); s_python_function_axis = safe_import(pymod, "axis"); s_python_function_axhline = safe_import(pymod, "axhline"); s_python_function_axvline = safe_import(pymod, "axvline"); s_python_function_axvspan = safe_import(pymod, "axvspan"); s_python_function_xlabel = safe_import(pymod, "xlabel"); s_python_function_ylabel = safe_import(pymod, "ylabel"); s_python_function_gca = safe_import(pymod, "gca"); s_python_function_xticks = safe_import(pymod, "xticks"); s_python_function_yticks = safe_import(pymod, "yticks"); s_python_function_margins = safe_import(pymod, "margins"); s_python_function_tick_params = safe_import(pymod, "tick_params"); s_python_function_grid = safe_import(pymod, "grid"); s_python_function_ion = safe_import(pymod, "ion"); s_python_function_ginput = safe_import(pymod, "ginput"); s_python_function_save = safe_import(pylabmod, "savefig"); s_python_function_annotate = safe_import(pymod,"annotate"); s_python_function_cla = safe_import(pymod, "cla"); s_python_function_clf = safe_import(pymod, "clf"); s_python_function_errorbar = safe_import(pymod, "errorbar"); s_python_function_tight_layout = safe_import(pymod, "tight_layout"); s_python_function_stem = safe_import(pymod, "stem"); s_python_function_xkcd = safe_import(pymod, "xkcd"); s_python_function_text = safe_import(pymod, "text"); s_python_function_suptitle = safe_import(pymod, "suptitle"); s_python_function_bar = safe_import(pymod,"bar"); s_python_function_barh = safe_import(pymod, "barh"); s_python_function_colorbar = PyObject_GetAttrString(pymod, "colorbar"); s_python_function_subplots_adjust = safe_import(pymod,"subplots_adjust"); s_python_function_rcparams = PyObject_GetAttrString(pymod, "rcParams"); s_python_function_spy = PyObject_GetAttrString(pymod, "spy"); #ifndef WITHOUT_NUMPY s_python_function_imshow = safe_import(pymod, "imshow"); #endif s_python_empty_tuple = PyTuple_New(0); } ~_interpreter() { Py_Finalize(); } }; } // end namespace detail /// Select the backend /// /// **NOTE:** This must be called before the first plot command to have /// any effect. /// /// Mainly useful to select the non-interactive 'Agg' backend when running /// matplotlibcpp in headless mode, for example on a machine with no display. /// /// See also: https://matplotlib.org/2.0.2/api/matplotlib_configuration_api.html#matplotlib.use inline void backend(const std::string& name) { detail::s_backend = name; } inline bool annotate(std::string annotation, double x, double y) { detail::_interpreter::get(); PyObject * xy = PyTuple_New(2); PyObject * str = PyString_FromString(annotation.c_str()); PyTuple_SetItem(xy,0,PyFloat_FromDouble(x)); PyTuple_SetItem(xy,1,PyFloat_FromDouble(y)); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "xy", xy); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, str); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_annotate, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } namespace detail { #ifndef WITHOUT_NUMPY // Type selector for numpy array conversion template struct select_npy_type { const static NPY_TYPES type = NPY_NOTYPE; }; //Default template <> struct select_npy_type { const static NPY_TYPES type = NPY_DOUBLE; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_FLOAT; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_BOOL; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_INT8; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_SHORT; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_INT; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_INT64; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_UINT8; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_USHORT; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_ULONG; }; template <> struct select_npy_type { const static NPY_TYPES type = NPY_UINT64; }; // Sanity checks; comment them out or change the numpy type below if you're compiling on // a platform where they don't apply #ifndef _WIN32 static_assert(sizeof(long long) == 8); template <> struct select_npy_type { const static NPY_TYPES type = NPY_INT64; }; static_assert(sizeof(unsigned long long) == 8); template <> struct select_npy_type { const static NPY_TYPES type = NPY_UINT64; }; #endif template PyObject* get_array(const std::vector& v) { npy_intp vsize = v.size(); NPY_TYPES type = select_npy_type::type; if (type == NPY_NOTYPE) { size_t memsize = v.size()*sizeof(double); double* dp = static_cast(::malloc(memsize)); for (size_t i=0; i(varray), NPY_ARRAY_OWNDATA); return varray; } PyObject* varray = PyArray_SimpleNewFromData(1, &vsize, type, (void*)(v.data())); return varray; } template PyObject* get_2darray(const std::vector<::std::vector>& v) { if (v.size() < 1) throw std::runtime_error("get_2d_array v too small"); npy_intp vsize[2] = {static_cast(v.size()), static_cast(v[0].size())}; PyArrayObject *varray = (PyArrayObject *)PyArray_SimpleNew(2, vsize, NPY_DOUBLE); double *vd_begin = static_cast(PyArray_DATA(varray)); for (const ::std::vector &v_row : v) { if (v_row.size() != static_cast(vsize[1])) throw std::runtime_error("Missmatched array size"); std::copy(v_row.begin(), v_row.end(), vd_begin); vd_begin += vsize[1]; } return reinterpret_cast(varray); } #else // fallback if we don't have numpy: copy every element of the given vector template PyObject* get_array(const std::vector& v) { PyObject* list = PyList_New(v.size()); for(size_t i = 0; i < v.size(); ++i) { PyList_SetItem(list, i, PyFloat_FromDouble(v.at(i))); } return list; } #endif // WITHOUT_NUMPY // sometimes, for labels and such, we need string arrays inline PyObject * get_array(const std::vector<:string>& strings) { PyObject* list = PyList_New(strings.size()); for (std::size_t i = 0; i < strings.size(); ++i) { PyList_SetItem(list, i, PyString_FromString(strings[i].c_str())); } return list; } // not all matplotlib need 2d arrays, some prefer lists of lists template PyObject* get_listlist(const std::vector<:vector>>& ll) { PyObject* listlist = PyList_New(ll.size()); for (std::size_t i = 0; i < ll.size(); ++i) { PyList_SetItem(listlist, i, get_array(ll[i])); } return listlist; } } // namespace detail /// Plot a line through the given x and y data points.. /// /// See: https://matplotlib.org/3.2.1/api/_as_gen/matplotlib.pyplot.plot.html template bool plot(const std::vector &x, const std::vector &y, const std::map<:string std::string>& keywords) { assert(x.size() == y.size()); detail::_interpreter::get(); // using numpy arrays PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); // construct positional args PyObject* args = PyTuple_New(2); PyTuple_SetItem(args, 0, xarray); PyTuple_SetItem(args, 1, yarray); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_plot, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } // TODO - it should be possible to make this work by implementing // a non-numpy alternative for `detail::get_2darray()`. #ifndef WITHOUT_NUMPY template void plot_surface(const std::vector<::std::vector> &x, const std::vector<::std::vector> &y, const std::vector<::std::vector> &z, const std::map<:string std::string> &keywords = std::map<:string std::string>(), const long fig_number=0) { detail::_interpreter::get(); // We lazily load the modules here the first time this function is called // because I'm not sure that we can assume "matplotlib installed" implies // "mpl_toolkits installed" on all platforms, and we don't want to require // it for people who don't need 3d plots. static PyObject *mpl_toolkitsmod = nullptr, *axis3dmod = nullptr; if (!mpl_toolkitsmod) { detail::_interpreter::get(); PyObject* mpl_toolkits = PyString_FromString("mpl_toolkits"); PyObject* axis3d = PyString_FromString("mpl_toolkits.mplot3d"); if (!mpl_toolkits || !axis3d) { throw std::runtime_error("couldnt create string"); } mpl_toolkitsmod = PyImport_Import(mpl_toolkits); Py_DECREF(mpl_toolkits); if (!mpl_toolkitsmod) { throw std::runtime_error("Error loading module mpl_toolkits!"); } axis3dmod = PyImport_Import(axis3d); Py_DECREF(axis3d); if (!axis3dmod) { throw std::runtime_error("Error loading module mpl_toolkits.mplot3d!"); } } assert(x.size() == y.size()); assert(y.size() == z.size()); // using numpy arrays PyObject *xarray = detail::get_2darray(x); PyObject *yarray = detail::get_2darray(y); PyObject *zarray = detail::get_2darray(z); // construct positional args PyObject *args = PyTuple_New(3); PyTuple_SetItem(args, 0, xarray); PyTuple_SetItem(args, 1, yarray); PyTuple_SetItem(args, 2, zarray); // Build up the kw args. PyObject *kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "rstride", PyInt_FromLong(1)); PyDict_SetItemString(kwargs, "cstride", PyInt_FromLong(1)); PyObject *python_colormap_coolwarm = PyObject_GetAttrString( detail::_interpreter::get().s_python_colormap, "coolwarm"); PyDict_SetItemString(kwargs, "cmap", python_colormap_coolwarm); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { if (it->first == "linewidth" || it->first == "alpha") { PyDict_SetItemString(kwargs, it->first.c_str(), PyFloat_FromDouble(std::stod(it->second))); } else { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } } PyObject *fig_args = PyTuple_New(1); PyObject* fig = nullptr; PyTuple_SetItem(fig_args, 0, PyLong_FromLong(fig_number)); PyObject *fig_exists = PyObject_CallObject( detail::_interpreter::get().s_python_function_fignum_exists, fig_args); if (!PyObject_IsTrue(fig_exists)) { fig = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, detail::_interpreter::get().s_python_empty_tuple); } else { fig = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, fig_args); } Py_DECREF(fig_exists); if (!fig) throw std::runtime_error("Call to figure() failed."); PyObject *gca_kwargs = PyDict_New(); PyDict_SetItemString(gca_kwargs, "projection", PyString_FromString("3d")); PyObject *gca = PyObject_GetAttrString(fig, "gca"); if (!gca) throw std::runtime_error("No gca"); Py_INCREF(gca); PyObject *axis = PyObject_Call( gca, detail::_interpreter::get().s_python_empty_tuple, gca_kwargs); if (!axis) throw std::runtime_error("No axis"); Py_INCREF(axis); Py_DECREF(gca); Py_DECREF(gca_kwargs); PyObject *plot_surface = PyObject_GetAttrString(axis, "plot_surface"); if (!plot_surface) throw std::runtime_error("No surface"); Py_INCREF(plot_surface); PyObject *res = PyObject_Call(plot_surface, args, kwargs); if (!res) throw std::runtime_error("failed surface"); Py_DECREF(plot_surface); Py_DECREF(axis); Py_DECREF(args); Py_DECREF(kwargs); if (res) Py_DECREF(res); } template void contour(const std::vector<::std::vector> &x, const std::vector<::std::vector> &y, const std::vector<::std::vector> &z, const std::map<:string std::string> &keywords = {}) { detail::_interpreter::get(); // using numpy arrays PyObject *xarray = detail::get_2darray(x); PyObject *yarray = detail::get_2darray(y); PyObject *zarray = detail::get_2darray(z); // construct positional args PyObject *args = PyTuple_New(3); PyTuple_SetItem(args, 0, xarray); PyTuple_SetItem(args, 1, yarray); PyTuple_SetItem(args, 2, zarray); // Build up the kw args. PyObject *kwargs = PyDict_New(); PyObject *python_colormap_coolwarm = PyObject_GetAttrString( detail::_interpreter::get().s_python_colormap, "coolwarm"); PyDict_SetItemString(kwargs, "cmap", python_colormap_coolwarm); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject *res = PyObject_Call(detail::_interpreter::get().s_python_function_contour, args, kwargs); if (!res) throw std::runtime_error("failed contour"); Py_DECREF(args); Py_DECREF(kwargs); if (res) Py_DECREF(res); } template void spy(const std::vector<::std::vector> &x, const double markersize = -1, // -1 for default matplotlib size const std::map<:string std::string> &keywords = {}) { detail::_interpreter::get(); PyObject *xarray = detail::get_2darray(x); PyObject *kwargs = PyDict_New(); if (markersize != -1) { PyDict_SetItemString(kwargs, "markersize", PyFloat_FromDouble(markersize)); } for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject *plot_args = PyTuple_New(1); PyTuple_SetItem(plot_args, 0, xarray); PyObject *res = PyObject_Call( detail::_interpreter::get().s_python_function_spy, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if (res) Py_DECREF(res); } #endif // WITHOUT_NUMPY template void plot3(const std::vector &x, const std::vector &y, const std::vector &z, const std::map<:string std::string> &keywords = std::map<:string std::string>(), const long fig_number=0) { detail::_interpreter::get(); // Same as with plot_surface: We lazily load the modules here the first time // this function is called because I'm not sure that we can assume "matplotlib // installed" implies "mpl_toolkits installed" on all platforms, and we don't // want to require it for people who don't need 3d plots. static PyObject *mpl_toolkitsmod = nullptr, *axis3dmod = nullptr; if (!mpl_toolkitsmod) { detail::_interpreter::get(); PyObject* mpl_toolkits = PyString_FromString("mpl_toolkits"); PyObject* axis3d = PyString_FromString("mpl_toolkits.mplot3d"); if (!mpl_toolkits || !axis3d) { throw std::runtime_error("couldnt create string"); } mpl_toolkitsmod = PyImport_Import(mpl_toolkits); Py_DECREF(mpl_toolkits); if (!mpl_toolkitsmod) { throw std::runtime_error("Error loading module mpl_toolkits!"); } axis3dmod = PyImport_Import(axis3d); Py_DECREF(axis3d); if (!axis3dmod) { throw std::runtime_error("Error loading module mpl_toolkits.mplot3d!"); } } assert(x.size() == y.size()); assert(y.size() == z.size()); PyObject *xarray = detail::get_array(x); PyObject *yarray = detail::get_array(y); PyObject *zarray = detail::get_array(z); // construct positional args PyObject *args = PyTuple_New(3); PyTuple_SetItem(args, 0, xarray); PyTuple_SetItem(args, 1, yarray); PyTuple_SetItem(args, 2, zarray); // Build up the kw args. PyObject *kwargs = PyDict_New(); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject *fig_args = PyTuple_New(1); PyObject* fig = nullptr; PyTuple_SetItem(fig_args, 0, PyLong_FromLong(fig_number)); PyObject *fig_exists = PyObject_CallObject(detail::_interpreter::get().s_python_function_fignum_exists, fig_args); if (!PyObject_IsTrue(fig_exists)) { fig = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, detail::_interpreter::get().s_python_empty_tuple); } else { fig = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, fig_args); } if (!fig) throw std::runtime_error("Call to figure() failed."); PyObject *gca_kwargs = PyDict_New(); PyDict_SetItemString(gca_kwargs, "projection", PyString_FromString("3d")); PyObject *gca = PyObject_GetAttrString(fig, "gca"); if (!gca) throw std::runtime_error("No gca"); Py_INCREF(gca); PyObject *axis = PyObject_Call( gca, detail::_interpreter::get().s_python_empty_tuple, gca_kwargs); if (!axis) throw std::runtime_error("No axis"); Py_INCREF(axis); Py_DECREF(gca); Py_DECREF(gca_kwargs); PyObject *plot3 = PyObject_GetAttrString(axis, "plot"); if (!plot3) throw std::runtime_error("No 3D line plot"); Py_INCREF(plot3); PyObject *res = PyObject_Call(plot3, args, kwargs); if (!res) throw std::runtime_error("Failed 3D line plot"); Py_DECREF(plot3); Py_DECREF(axis); Py_DECREF(args); Py_DECREF(kwargs); if (res) Py_DECREF(res); } template bool stem(const std::vector &x, const std::vector &y, const std::map<:string std::string>& keywords) { assert(x.size() == y.size()); detail::_interpreter::get(); // using numpy arrays PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); // construct positional args PyObject* args = PyTuple_New(2); PyTuple_SetItem(args, 0, xarray); PyTuple_SetItem(args, 1, yarray); // construct keyword args PyObject* kwargs = PyDict_New(); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject* res = PyObject_Call( detail::_interpreter::get().s_python_function_stem, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if (res) Py_DECREF(res); return res; } template< typename Numeric > bool fill(const std::vector& x, const std::vector& y, const std::map<:string std::string>& keywords) { assert(x.size() == y.size()); detail::_interpreter::get(); // using numpy arrays PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); // construct positional args PyObject* args = PyTuple_New(2); PyTuple_SetItem(args, 0, xarray); PyTuple_SetItem(args, 1, yarray); // construct keyword args PyObject* kwargs = PyDict_New(); for (auto it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_fill, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if (res) Py_DECREF(res); return res; } template< typename Numeric > bool fill_between(const std::vector& x, const std::vector& y1, const std::vector& y2, const std::map<:string std::string>& keywords) { assert(x.size() == y1.size()); assert(x.size() == y2.size()); detail::_interpreter::get(); // using numpy arrays PyObject* xarray = detail::get_array(x); PyObject* y1array = detail::get_array(y1); PyObject* y2array = detail::get_array(y2); // construct positional args PyObject* args = PyTuple_New(3); PyTuple_SetItem(args, 0, xarray); PyTuple_SetItem(args, 1, y1array); PyTuple_SetItem(args, 2, y2array); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_fill_between, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } template bool arrow(Numeric x, Numeric y, Numeric end_x, Numeric end_y, const std::string& fc = "r", const std::string ec = "k", Numeric head_length = 0.25, Numeric head_width = 0.1625) { PyObject* obj_x = PyFloat_FromDouble(x); PyObject* obj_y = PyFloat_FromDouble(y); PyObject* obj_end_x = PyFloat_FromDouble(end_x); PyObject* obj_end_y = PyFloat_FromDouble(end_y); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "fc", PyString_FromString(fc.c_str())); PyDict_SetItemString(kwargs, "ec", PyString_FromString(ec.c_str())); PyDict_SetItemString(kwargs, "head_width", PyFloat_FromDouble(head_width)); PyDict_SetItemString(kwargs, "head_length", PyFloat_FromDouble(head_length)); PyObject* plot_args = PyTuple_New(4); PyTuple_SetItem(plot_args, 0, obj_x); PyTuple_SetItem(plot_args, 1, obj_y); PyTuple_SetItem(plot_args, 2, obj_end_x); PyTuple_SetItem(plot_args, 3, obj_end_y); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_arrow, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if (res) Py_DECREF(res); return res; } template< typename Numeric> bool hist(const std::vector& y, long bins=10,std::string color="b", double alpha=1.0, bool cumulative=false) { detail::_interpreter::get(); PyObject* yarray = detail::get_array(y); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "bins", PyLong_FromLong(bins)); PyDict_SetItemString(kwargs, "color", PyString_FromString(color.c_str())); PyDict_SetItemString(kwargs, "alpha", PyFloat_FromDouble(alpha)); PyDict_SetItemString(kwargs, "cumulative", cumulative ? Py_True : Py_False); PyObject* plot_args = PyTuple_New(1); PyTuple_SetItem(plot_args, 0, yarray); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_hist, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } #ifndef WITHOUT_NUMPY namespace detail { inline void imshow(void *ptr, const NPY_TYPES type, const int rows, const int columns, const int colors, const std::map<:string std::string> &keywords, PyObject** out) { assert(type == NPY_UINT8 || type == NPY_FLOAT); assert(colors == 1 || colors == 3 || colors == 4); detail::_interpreter::get(); // construct args npy_intp dims[3] = { rows, columns, colors }; PyObject *args = PyTuple_New(1); PyTuple_SetItem(args, 0, PyArray_SimpleNewFromData(colors == 1 ? 2 : 3, dims, type, ptr)); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject *res = PyObject_Call(detail::_interpreter::get().s_python_function_imshow, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if (!res) throw std::runtime_error("Call to imshow() failed"); if (out) *out = res; else Py_DECREF(res); } } // namespace detail inline void imshow(const unsigned char *ptr, const int rows, const int columns, const int colors, const std::map<:string std::string> &keywords = {}, PyObject** out = nullptr) { detail::imshow((void *) ptr, NPY_UINT8, rows, columns, colors, keywords, out); } inline void imshow(const float *ptr, const int rows, const int columns, const int colors, const std::map<:string std::string> &keywords = {}, PyObject** out = nullptr) { detail::imshow((void *) ptr, NPY_FLOAT, rows, columns, colors, keywords, out); } #ifdef WITH_OPENCV void imshow(const cv::Mat &image, const std::map<:string std::string> &keywords = {}) { // Convert underlying type of matrix, if needed cv::Mat image2; NPY_TYPES npy_type = NPY_UINT8; switch (image.type() & CV_MAT_DEPTH_MASK) { case CV_8U: image2 = image; break; case CV_32F: image2 = image; npy_type = NPY_FLOAT; break; default: image.convertTo(image2, CV_MAKETYPE(CV_8U, image.channels())); } // If color image, convert from BGR to RGB switch (image2.channels()) { case 3: cv::cvtColor(image2, image2, CV_BGR2RGB); break; case 4: cv::cvtColor(image2, image2, CV_BGRA2RGBA); } detail::imshow(image2.data, npy_type, image2.rows, image2.cols, image2.channels(), keywords); } #endif // WITH_OPENCV #endif // WITHOUT_NUMPY template bool scatter(const std::vector& x, const std::vector& y, const double s=1.0, // The marker size in points**2 const std::map<:string std::string> & keywords = {}) { detail::_interpreter::get(); assert(x.size() == y.size()); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "s", PyLong_FromLong(s)); for (const auto& it : keywords) { PyDict_SetItemString(kwargs, it.first.c_str(), PyString_FromString(it.second.c_str())); } PyObject* plot_args = PyTuple_New(2); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_scatter, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } template bool scatter_colored(const std::vector& x, const std::vector& y, const std::vector& colors, const double s=1.0, // The marker size in points**2 const std::map<:string std::string> & keywords = {}) { detail::_interpreter::get(); assert(x.size() == y.size()); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* colors_array = detail::get_array(colors); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "s", PyLong_FromLong(s)); PyDict_SetItemString(kwargs, "c", colors_array); for (const auto& it : keywords) { PyDict_SetItemString(kwargs, it.first.c_str(), PyString_FromString(it.second.c_str())); } PyObject* plot_args = PyTuple_New(2); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_scatter, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } template bool scatter(const std::vector& x, const std::vector& y, const std::vector& z, const double s=1.0, // The marker size in points**2 const std::map<:string std::string> & keywords = {}, const long fig_number=0) { detail::_interpreter::get(); // Same as with plot_surface: We lazily load the modules here the first time // this function is called because I'm not sure that we can assume "matplotlib // installed" implies "mpl_toolkits installed" on all platforms, and we don't // want to require it for people who don't need 3d plots. static PyObject *mpl_toolkitsmod = nullptr, *axis3dmod = nullptr; if (!mpl_toolkitsmod) { detail::_interpreter::get(); PyObject* mpl_toolkits = PyString_FromString("mpl_toolkits"); PyObject* axis3d = PyString_FromString("mpl_toolkits.mplot3d"); if (!mpl_toolkits || !axis3d) { throw std::runtime_error("couldnt create string"); } mpl_toolkitsmod = PyImport_Import(mpl_toolkits); Py_DECREF(mpl_toolkits); if (!mpl_toolkitsmod) { throw std::runtime_error("Error loading module mpl_toolkits!"); } axis3dmod = PyImport_Import(axis3d); Py_DECREF(axis3d); if (!axis3dmod) { throw std::runtime_error("Error loading module mpl_toolkits.mplot3d!"); } } assert(x.size() == y.size()); assert(y.size() == z.size()); PyObject *xarray = detail::get_array(x); PyObject *yarray = detail::get_array(y); PyObject *zarray = detail::get_array(z); // construct positional args PyObject *args = PyTuple_New(3); PyTuple_SetItem(args, 0, xarray); PyTuple_SetItem(args, 1, yarray); PyTuple_SetItem(args, 2, zarray); // Build up the kw args. PyObject *kwargs = PyDict_New(); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject *fig_args = PyTuple_New(1); PyObject* fig = nullptr; PyTuple_SetItem(fig_args, 0, PyLong_FromLong(fig_number)); PyObject *fig_exists = PyObject_CallObject(detail::_interpreter::get().s_python_function_fignum_exists, fig_args); if (!PyObject_IsTrue(fig_exists)) { fig = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, detail::_interpreter::get().s_python_empty_tuple); } else { fig = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, fig_args); } Py_DECREF(fig_exists); if (!fig) throw std::runtime_error("Call to figure() failed."); PyObject *gca_kwargs = PyDict_New(); PyDict_SetItemString(gca_kwargs, "projection", PyString_FromString("3d")); PyObject *gca = PyObject_GetAttrString(fig, "gca"); if (!gca) throw std::runtime_error("No gca"); Py_INCREF(gca); PyObject *axis = PyObject_Call( gca, detail::_interpreter::get().s_python_empty_tuple, gca_kwargs); if (!axis) throw std::runtime_error("No axis"); Py_INCREF(axis); Py_DECREF(gca); Py_DECREF(gca_kwargs); PyObject *plot3 = PyObject_GetAttrString(axis, "scatter"); if (!plot3) throw std::runtime_error("No 3D line plot"); Py_INCREF(plot3); PyObject *res = PyObject_Call(plot3, args, kwargs); if (!res) throw std::runtime_error("Failed 3D line plot"); Py_DECREF(plot3); Py_DECREF(axis); Py_DECREF(args); Py_DECREF(kwargs); Py_DECREF(fig); if (res) Py_DECREF(res); return res; } template bool boxplot(const std::vector<:vector>>& data, const std::vector<:string>& labels = {}, const std::map<:string std::string> & keywords = {}) { detail::_interpreter::get(); PyObject* listlist = detail::get_listlist(data); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, listlist); PyObject* kwargs = PyDict_New(); // kwargs needs the labels, if there are (the correct number of) labels if (!labels.empty() && labels.size() == data.size()) { PyDict_SetItemString(kwargs, "labels", detail::get_array(labels)); } // take care of the remaining keywords for (const auto& it : keywords) { PyDict_SetItemString(kwargs, it.first.c_str(), PyString_FromString(it.second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_boxplot, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } template bool boxplot(const std::vector& data, const std::map<:string std::string> & keywords = {}) { detail::_interpreter::get(); PyObject* vector = detail::get_array(data); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, vector); PyObject* kwargs = PyDict_New(); for (const auto& it : keywords) { PyDict_SetItemString(kwargs, it.first.c_str(), PyString_FromString(it.second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_boxplot, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } template bool bar(const std::vector & x, const std::vector & y, std::string ec = "black", std::string ls = "-", double lw = 1.0, const std::map<:string std::string> & keywords = {}) { detail::_interpreter::get(); PyObject * xarray = detail::get_array(x); PyObject * yarray = detail::get_array(y); PyObject * kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "ec", PyString_FromString(ec.c_str())); PyDict_SetItemString(kwargs, "ls", PyString_FromString(ls.c_str())); PyDict_SetItemString(kwargs, "lw", PyFloat_FromDouble(lw)); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString( kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject * plot_args = PyTuple_New(2); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyObject * res = PyObject_Call( detail::_interpreter::get().s_python_function_bar, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if (res) Py_DECREF(res); return res; } template bool bar(const std::vector & y, std::string ec = "black", std::string ls = "-", double lw = 1.0, const std::map<:string std::string> & keywords = {}) { using T = typename std::remove_reference::type::value_type; detail::_interpreter::get(); std::vector x; for (std::size_t i = 0; i < y.size(); i++) { x.push_back(static_cast(i)); } return bar(x, y, ec, ls, lw, keywords); } template bool barh(const std::vector &x, const std::vector &y, std::string ec = "black", std::string ls = "-", double lw = 1.0, const std::map<:string std::string> &keywords = { }) { PyObject *xarray = detail::get_array(x); PyObject *yarray = detail::get_array(y); PyObject *kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "ec", PyString_FromString(ec.c_str())); PyDict_SetItemString(kwargs, "ls", PyString_FromString(ls.c_str())); PyDict_SetItemString(kwargs, "lw", PyFloat_FromDouble(lw)); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject *plot_args = PyTuple_New(2); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyObject *res = PyObject_Call(detail::_interpreter::get().s_python_function_barh, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if (res) Py_DECREF(res); return res; } inline bool subplots_adjust(const std::map<:string double>& keywords = {}) { detail::_interpreter::get(); PyObject* kwargs = PyDict_New(); for (std::map<:string double>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyFloat_FromDouble(it->second)); } PyObject* plot_args = PyTuple_New(0); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_subplots_adjust, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } template< typename Numeric> bool named_hist(std::string label,const std::vector& y, long bins=10, std::string color="b", double alpha=1.0) { detail::_interpreter::get(); PyObject* yarray = detail::get_array(y); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "label", PyString_FromString(label.c_str())); PyDict_SetItemString(kwargs, "bins", PyLong_FromLong(bins)); PyDict_SetItemString(kwargs, "color", PyString_FromString(color.c_str())); PyDict_SetItemString(kwargs, "alpha", PyFloat_FromDouble(alpha)); PyObject* plot_args = PyTuple_New(1); PyTuple_SetItem(plot_args, 0, yarray); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_hist, plot_args, kwargs); Py_DECREF(plot_args); Py_DECREF(kwargs); if(res) Py_DECREF(res); return res; } template bool plot(const std::vector& x, const std::vector& y, const std::string& s = "") { assert(x.size() == y.size()); detail::_interpreter::get(); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(s.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_plot, plot_args); Py_DECREF(plot_args); if(res) Py_DECREF(res); return res; } template bool contour(const std::vector& x, const std::vector& y, const std::vector& z, const std::map<:string std::string>& keywords = {}) { assert(x.size() == y.size() && x.size() == z.size()); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* zarray = detail::get_array(z); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, zarray); // construct keyword args PyObject* kwargs = PyDict_New(); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_contour, plot_args, kwargs); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool quiver(const std::vector& x, const std::vector& y, const std::vector& u, const std::vector& w, const std::map<:string std::string>& keywords = {}) { assert(x.size() == y.size() && x.size() == u.size() && u.size() == w.size()); detail::_interpreter::get(); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* uarray = detail::get_array(u); PyObject* warray = detail::get_array(w); PyObject* plot_args = PyTuple_New(4); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, uarray); PyTuple_SetItem(plot_args, 3, warray); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject* res = PyObject_Call( detail::_interpreter::get().s_python_function_quiver, plot_args, kwargs); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool quiver(const std::vector& x, const std::vector& y, const std::vector& z, const std::vector& u, const std::vector& w, const std::vector& v, const std::map<:string std::string>& keywords = {}) { //set up 3d axes stuff static PyObject *mpl_toolkitsmod = nullptr, *axis3dmod = nullptr; if (!mpl_toolkitsmod) { detail::_interpreter::get(); PyObject* mpl_toolkits = PyString_FromString("mpl_toolkits"); PyObject* axis3d = PyString_FromString("mpl_toolkits.mplot3d"); if (!mpl_toolkits || !axis3d) { throw std::runtime_error("couldnt create string"); } mpl_toolkitsmod = PyImport_Import(mpl_toolkits); Py_DECREF(mpl_toolkits); if (!mpl_toolkitsmod) { throw std::runtime_error("Error loading module mpl_toolkits!"); } axis3dmod = PyImport_Import(axis3d); Py_DECREF(axis3d); if (!axis3dmod) { throw std::runtime_error("Error loading module mpl_toolkits.mplot3d!"); } } //assert sizes match up assert(x.size() == y.size() && x.size() == u.size() && u.size() == w.size() && x.size() == z.size() && x.size() == v.size() && u.size() == v.size()); //set up parameters detail::_interpreter::get(); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* zarray = detail::get_array(z); PyObject* uarray = detail::get_array(u); PyObject* warray = detail::get_array(w); PyObject* varray = detail::get_array(v); PyObject* plot_args = PyTuple_New(6); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, zarray); PyTuple_SetItem(plot_args, 3, uarray); PyTuple_SetItem(plot_args, 4, warray); PyTuple_SetItem(plot_args, 5, varray); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } //get figure gca to enable 3d projection PyObject *fig = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, detail::_interpreter::get().s_python_empty_tuple); if (!fig) throw std::runtime_error("Call to figure() failed."); PyObject *gca_kwargs = PyDict_New(); PyDict_SetItemString(gca_kwargs, "projection", PyString_FromString("3d")); PyObject *gca = PyObject_GetAttrString(fig, "gca"); if (!gca) throw std::runtime_error("No gca"); Py_INCREF(gca); PyObject *axis = PyObject_Call( gca, detail::_interpreter::get().s_python_empty_tuple, gca_kwargs); if (!axis) throw std::runtime_error("No axis"); Py_INCREF(axis); Py_DECREF(gca); Py_DECREF(gca_kwargs); //plot our boys bravely, plot them strongly, plot them with a wink and clap PyObject *plot3 = PyObject_GetAttrString(axis, "quiver"); if (!plot3) throw std::runtime_error("No 3D line plot"); Py_INCREF(plot3); PyObject* res = PyObject_Call( plot3, plot_args, kwargs); if (!res) throw std::runtime_error("Failed 3D plot"); Py_DECREF(plot3); Py_DECREF(axis); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool stem(const std::vector& x, const std::vector& y, const std::string& s = "") { assert(x.size() == y.size()); detail::_interpreter::get(); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(s.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_CallObject( detail::_interpreter::get().s_python_function_stem, plot_args); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool semilogx(const std::vector& x, const std::vector& y, const std::string& s = "") { assert(x.size() == y.size()); detail::_interpreter::get(); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(s.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_semilogx, plot_args); Py_DECREF(plot_args); if(res) Py_DECREF(res); return res; } template bool semilogy(const std::vector& x, const std::vector& y, const std::string& s = "") { assert(x.size() == y.size()); detail::_interpreter::get(); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(s.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_semilogy, plot_args); Py_DECREF(plot_args); if(res) Py_DECREF(res); return res; } template bool loglog(const std::vector& x, const std::vector& y, const std::string& s = "") { assert(x.size() == y.size()); detail::_interpreter::get(); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(s.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_loglog, plot_args); Py_DECREF(plot_args); if(res) Py_DECREF(res); return res; } template bool errorbar(const std::vector &x, const std::vector &y, const std::vector &yerr, const std::map<:string std::string> &keywords = {}) { assert(x.size() == y.size()); detail::_interpreter::get(); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* yerrarray = detail::get_array(yerr); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyDict_SetItemString(kwargs, "yerr", yerrarray); PyObject *plot_args = PyTuple_New(2); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyObject *res = PyObject_Call(detail::_interpreter::get().s_python_function_errorbar, plot_args, kwargs); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); else throw std::runtime_error("Call to errorbar() failed."); return res; } template bool named_plot(const std::string& name, const std::vector& y, const std::string& format = "") { detail::_interpreter::get(); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "label", PyString_FromString(name.c_str())); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(format.c_str()); PyObject* plot_args = PyTuple_New(2); PyTuple_SetItem(plot_args, 0, yarray); PyTuple_SetItem(plot_args, 1, pystring); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_plot, plot_args, kwargs); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool named_plot(const std::string& name, const std::vector& x, const std::vector& y, const std::string& format = "") { detail::_interpreter::get(); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "label", PyString_FromString(name.c_str())); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(format.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_plot, plot_args, kwargs); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool named_semilogx(const std::string& name, const std::vector& x, const std::vector& y, const std::string& format = "") { detail::_interpreter::get(); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "label", PyString_FromString(name.c_str())); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(format.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_semilogx, plot_args, kwargs); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool named_semilogy(const std::string& name, const std::vector& x, const std::vector& y, const std::string& format = "") { detail::_interpreter::get(); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "label", PyString_FromString(name.c_str())); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(format.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_semilogy, plot_args, kwargs); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool named_loglog(const std::string& name, const std::vector& x, const std::vector& y, const std::string& format = "") { detail::_interpreter::get(); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "label", PyString_FromString(name.c_str())); PyObject* xarray = detail::get_array(x); PyObject* yarray = detail::get_array(y); PyObject* pystring = PyString_FromString(format.c_str()); PyObject* plot_args = PyTuple_New(3); PyTuple_SetItem(plot_args, 0, xarray); PyTuple_SetItem(plot_args, 1, yarray); PyTuple_SetItem(plot_args, 2, pystring); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_loglog, plot_args, kwargs); Py_DECREF(kwargs); Py_DECREF(plot_args); if (res) Py_DECREF(res); return res; } template bool plot(const std::vector& y, const std::string& format = "") { std::vector x(y.size()); for(size_t i = 0; i < x.size(); ++i) x.at(i) = static_cast(i); return plot(x,y,format); } template bool plot(const std::vector& y, const std::map<:string std::string>& keywords) { std::vector x(y.size()); for(size_t i = 0; i < x.size(); ++i) x.at(i) = static_cast(i); return plot(x,y,keywords); } template bool stem(const std::vector& y, const std::string& format = "") { std::vector x(y.size()); for(size_t i = 0; i < x.size(); ++i) x.at(i) = static_cast(i); return stem(x, y, format); } template void text(Numeric x, Numeric y, const std::string& s = "") { detail::_interpreter::get(); PyObject* args = PyTuple_New(3); PyTuple_SetItem(args, 0, PyFloat_FromDouble(x)); PyTuple_SetItem(args, 1, PyFloat_FromDouble(y)); PyTuple_SetItem(args, 2, PyString_FromString(s.c_str())); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_text, args); if(!res) throw std::runtime_error("Call to text() failed."); Py_DECREF(args); Py_DECREF(res); } inline void colorbar(PyObject* mappable = NULL, const std::map<:string float>& keywords = {}) { if (mappable == NULL) throw std::runtime_error("Must call colorbar with PyObject* returned from an image, contour, surface, etc."); detail::_interpreter::get(); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, mappable); PyObject* kwargs = PyDict_New(); for(std::map<:string float>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyFloat_FromDouble(it->second)); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_colorbar, args, kwargs); if(!res) throw std::runtime_error("Call to colorbar() failed."); Py_DECREF(args); Py_DECREF(kwargs); Py_DECREF(res); } inline long figure(long number = -1) { detail::_interpreter::get(); PyObject *res; if (number == -1) res = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, detail::_interpreter::get().s_python_empty_tuple); else { assert(number > 0); // Make sure interpreter is initialised detail::_interpreter::get(); PyObject *args = PyTuple_New(1); PyTuple_SetItem(args, 0, PyLong_FromLong(number)); res = PyObject_CallObject(detail::_interpreter::get().s_python_function_figure, args); Py_DECREF(args); } if(!res) throw std::runtime_error("Call to figure() failed."); PyObject* num = PyObject_GetAttrString(res, "number"); if (!num) throw std::runtime_error("Could not get number attribute of figure object"); const long figureNumber = PyLong_AsLong(num); Py_DECREF(num); Py_DECREF(res); return figureNumber; } inline bool fignum_exists(long number) { detail::_interpreter::get(); PyObject *args = PyTuple_New(1); PyTuple_SetItem(args, 0, PyLong_FromLong(number)); PyObject *res = PyObject_CallObject(detail::_interpreter::get().s_python_function_fignum_exists, args); if(!res) throw std::runtime_error("Call to fignum_exists() failed."); bool ret = PyObject_IsTrue(res); Py_DECREF(res); Py_DECREF(args); return ret; } inline void figure_size(size_t w, size_t h) { detail::_interpreter::get(); const size_t dpi = 100; PyObject* size = PyTuple_New(2); PyTuple_SetItem(size, 0, PyFloat_FromDouble((double)w / dpi)); PyTuple_SetItem(size, 1, PyFloat_FromDouble((double)h / dpi)); PyObject* kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "figsize", size); PyDict_SetItemString(kwargs, "dpi", PyLong_FromSize_t(dpi)); PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_figure, detail::_interpreter::get().s_python_empty_tuple, kwargs); Py_DECREF(kwargs); if(!res) throw std::runtime_error("Call to figure_size() failed."); Py_DECREF(res); } inline void legend() { detail::_interpreter::get(); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_legend, detail::_interpreter::get().s_python_empty_tuple); if(!res) throw std::runtime_error("Call to legend() failed."); Py_DECREF(res); } inline void legend(const std::map<:string std::string>& keywords) { detail::_interpreter::get(); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_legend, detail::_interpreter::get().s_python_empty_tuple, kwargs); if(!res) throw std::runtime_error("Call to legend() failed."); Py_DECREF(kwargs); Py_DECREF(res); } template inline void set_aspect(Numeric ratio) { detail::_interpreter::get(); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, PyFloat_FromDouble(ratio)); PyObject* kwargs = PyDict_New(); PyObject *ax = PyObject_CallObject(detail::_interpreter::get().s_python_function_gca, detail::_interpreter::get().s_python_empty_tuple); if (!ax) throw std::runtime_error("Call to gca() failed."); Py_INCREF(ax); PyObject *set_aspect = PyObject_GetAttrString(ax, "set_aspect"); if (!set_aspect) throw std::runtime_error("Attribute set_aspect not found."); Py_INCREF(set_aspect); PyObject *res = PyObject_Call(set_aspect, args, kwargs); if (!res) throw std::runtime_error("Call to set_aspect() failed."); Py_DECREF(set_aspect); Py_DECREF(ax); Py_DECREF(args); Py_DECREF(kwargs); } inline void set_aspect_equal() { // expect ratio == "equal". Leaving error handling to matplotlib. detail::_interpreter::get(); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, PyString_FromString("equal")); PyObject* kwargs = PyDict_New(); PyObject *ax = PyObject_CallObject(detail::_interpreter::get().s_python_function_gca, detail::_interpreter::get().s_python_empty_tuple); if (!ax) throw std::runtime_error("Call to gca() failed."); Py_INCREF(ax); PyObject *set_aspect = PyObject_GetAttrString(ax, "set_aspect"); if (!set_aspect) throw std::runtime_error("Attribute set_aspect not found."); Py_INCREF(set_aspect); PyObject *res = PyObject_Call(set_aspect, args, kwargs); if (!res) throw std::runtime_error("Call to set_aspect() failed."); Py_DECREF(set_aspect); Py_DECREF(ax); Py_DECREF(args); Py_DECREF(kwargs); } template void ylim(Numeric left, Numeric right) { detail::_interpreter::get(); PyObject* list = PyList_New(2); PyList_SetItem(list, 0, PyFloat_FromDouble(left)); PyList_SetItem(list, 1, PyFloat_FromDouble(right)); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, list); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_ylim, args); if(!res) throw std::runtime_error("Call to ylim() failed."); Py_DECREF(args); Py_DECREF(res); } template void xlim(Numeric left, Numeric right) { detail::_interpreter::get(); PyObject* list = PyList_New(2); PyList_SetItem(list, 0, PyFloat_FromDouble(left)); PyList_SetItem(list, 1, PyFloat_FromDouble(right)); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, list); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_xlim, args); if(!res) throw std::runtime_error("Call to xlim() failed."); Py_DECREF(args); Py_DECREF(res); } inline std::array xlim() { PyObject* args = PyTuple_New(0); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_xlim, args); if(!res) throw std::runtime_error("Call to xlim() failed."); Py_DECREF(res); PyObject* left = PyTuple_GetItem(res,0); PyObject* right = PyTuple_GetItem(res,1); return { PyFloat_AsDouble(left), PyFloat_AsDouble(right) }; } inline std::array ylim() { PyObject* args = PyTuple_New(0); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_ylim, args); if(!res) throw std::runtime_error("Call to ylim() failed."); Py_DECREF(res); PyObject* left = PyTuple_GetItem(res,0); PyObject* right = PyTuple_GetItem(res,1); return { PyFloat_AsDouble(left), PyFloat_AsDouble(right) }; } template inline void xticks(const std::vector &ticks, const std::vector<:string> &labels = {}, const std::map<:string std::string>& keywords = {}) { assert(labels.size() == 0 || ticks.size() == labels.size()); detail::_interpreter::get(); // using numpy array PyObject* ticksarray = detail::get_array(ticks); PyObject* args; if(labels.size() == 0) { // construct positional args args = PyTuple_New(1); PyTuple_SetItem(args, 0, ticksarray); } else { // make tuple of tick labels PyObject* labelstuple = PyTuple_New(labels.size()); for (size_t i = 0; i < labels.size(); i++) PyTuple_SetItem(labelstuple, i, PyUnicode_FromString(labels[i].c_str())); // construct positional args args = PyTuple_New(2); PyTuple_SetItem(args, 0, ticksarray); PyTuple_SetItem(args, 1, labelstuple); } // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_xticks, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(!res) throw std::runtime_error("Call to xticks() failed"); Py_DECREF(res); } template inline void xticks(const std::vector &ticks, const std::map<:string std::string>& keywords) { xticks(ticks, {}, keywords); } template inline void yticks(const std::vector &ticks, const std::vector<:string> &labels = {}, const std::map<:string std::string>& keywords = {}) { assert(labels.size() == 0 || ticks.size() == labels.size()); detail::_interpreter::get(); // using numpy array PyObject* ticksarray = detail::get_array(ticks); PyObject* args; if(labels.size() == 0) { // construct positional args args = PyTuple_New(1); PyTuple_SetItem(args, 0, ticksarray); } else { // make tuple of tick labels PyObject* labelstuple = PyTuple_New(labels.size()); for (size_t i = 0; i < labels.size(); i++) PyTuple_SetItem(labelstuple, i, PyUnicode_FromString(labels[i].c_str())); // construct positional args args = PyTuple_New(2); PyTuple_SetItem(args, 0, ticksarray); PyTuple_SetItem(args, 1, labelstuple); } // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_yticks, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(!res) throw std::runtime_error("Call to yticks() failed"); Py_DECREF(res); } template inline void yticks(const std::vector &ticks, const std::map<:string std::string>& keywords) { yticks(ticks, {}, keywords); } template inline void margins(Numeric margin) { // construct positional args PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, PyFloat_FromDouble(margin)); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_margins, args); if (!res) throw std::runtime_error("Call to margins() failed."); Py_DECREF(args); Py_DECREF(res); } template inline void margins(Numeric margin_x, Numeric margin_y) { // construct positional args PyObject* args = PyTuple_New(2); PyTuple_SetItem(args, 0, PyFloat_FromDouble(margin_x)); PyTuple_SetItem(args, 1, PyFloat_FromDouble(margin_y)); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_margins, args); if (!res) throw std::runtime_error("Call to margins() failed."); Py_DECREF(args); Py_DECREF(res); } inline void tick_params(const std::map<:string std::string>& keywords, const std::string axis = "both") { detail::_interpreter::get(); // construct positional args PyObject* args; args = PyTuple_New(1); PyTuple_SetItem(args, 0, PyString_FromString(axis.c_str())); // construct keyword args PyObject* kwargs = PyDict_New(); for (std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_tick_params, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if (!res) throw std::runtime_error("Call to tick_params() failed"); Py_DECREF(res); } inline void subplot(long nrows, long ncols, long plot_number) { detail::_interpreter::get(); // construct positional args PyObject* args = PyTuple_New(3); PyTuple_SetItem(args, 0, PyFloat_FromDouble(nrows)); PyTuple_SetItem(args, 1, PyFloat_FromDouble(ncols)); PyTuple_SetItem(args, 2, PyFloat_FromDouble(plot_number)); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_subplot, args); if(!res) throw std::runtime_error("Call to subplot() failed."); Py_DECREF(args); Py_DECREF(res); } inline void subplot2grid(long nrows, long ncols, long rowid=0, long colid=0, long rowspan=1, long colspan=1) { detail::_interpreter::get(); PyObject* shape = PyTuple_New(2); PyTuple_SetItem(shape, 0, PyLong_FromLong(nrows)); PyTuple_SetItem(shape, 1, PyLong_FromLong(ncols)); PyObject* loc = PyTuple_New(2); PyTuple_SetItem(loc, 0, PyLong_FromLong(rowid)); PyTuple_SetItem(loc, 1, PyLong_FromLong(colid)); PyObject* args = PyTuple_New(4); PyTuple_SetItem(args, 0, shape); PyTuple_SetItem(args, 1, loc); PyTuple_SetItem(args, 2, PyLong_FromLong(rowspan)); PyTuple_SetItem(args, 3, PyLong_FromLong(colspan)); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_subplot2grid, args); if(!res) throw std::runtime_error("Call to subplot2grid() failed."); Py_DECREF(shape); Py_DECREF(loc); Py_DECREF(args); Py_DECREF(res); } inline void title(const std::string &titlestr, const std::map<:string std::string> &keywords = {}) { detail::_interpreter::get(); PyObject* pytitlestr = PyString_FromString(titlestr.c_str()); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, pytitlestr); PyObject* kwargs = PyDict_New(); for (auto it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_title, args, kwargs); if(!res) throw std::runtime_error("Call to title() failed."); Py_DECREF(args); Py_DECREF(kwargs); Py_DECREF(res); } inline void suptitle(const std::string &suptitlestr, const std::map<:string std::string> &keywords = {}) { detail::_interpreter::get(); PyObject* pysuptitlestr = PyString_FromString(suptitlestr.c_str()); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, pysuptitlestr); PyObject* kwargs = PyDict_New(); for (auto it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_suptitle, args, kwargs); if(!res) throw std::runtime_error("Call to suptitle() failed."); Py_DECREF(args); Py_DECREF(kwargs); Py_DECREF(res); } inline void axis(const std::string &axisstr) { detail::_interpreter::get(); PyObject* str = PyString_FromString(axisstr.c_str()); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, str); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_axis, args); if(!res) throw std::runtime_error("Call to title() failed."); Py_DECREF(args); Py_DECREF(res); } inline void axhline(double y, double xmin = 0., double xmax = 1., const std::map<:string std::string>& keywords = std::map<:string std::string>()) { detail::_interpreter::get(); // construct positional args PyObject* args = PyTuple_New(3); PyTuple_SetItem(args, 0, PyFloat_FromDouble(y)); PyTuple_SetItem(args, 1, PyFloat_FromDouble(xmin)); PyTuple_SetItem(args, 2, PyFloat_FromDouble(xmax)); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_axhline, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(res) Py_DECREF(res); } inline void axvline(double x, double ymin = 0., double ymax = 1., const std::map<:string std::string>& keywords = std::map<:string std::string>()) { detail::_interpreter::get(); // construct positional args PyObject* args = PyTuple_New(3); PyTuple_SetItem(args, 0, PyFloat_FromDouble(x)); PyTuple_SetItem(args, 1, PyFloat_FromDouble(ymin)); PyTuple_SetItem(args, 2, PyFloat_FromDouble(ymax)); // construct keyword args PyObject* kwargs = PyDict_New(); for(std::map<:string std::string>::const_iterator it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_axvline, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(res) Py_DECREF(res); } inline void axvspan(double xmin, double xmax, double ymin = 0., double ymax = 1., const std::map<:string std::string>& keywords = std::map<:string std::string>()) { // construct positional args PyObject* args = PyTuple_New(4); PyTuple_SetItem(args, 0, PyFloat_FromDouble(xmin)); PyTuple_SetItem(args, 1, PyFloat_FromDouble(xmax)); PyTuple_SetItem(args, 2, PyFloat_FromDouble(ymin)); PyTuple_SetItem(args, 3, PyFloat_FromDouble(ymax)); // construct keyword args PyObject* kwargs = PyDict_New(); for (auto it = keywords.begin(); it != keywords.end(); ++it) { if (it->first == "linewidth" || it->first == "alpha") { PyDict_SetItemString(kwargs, it->first.c_str(), PyFloat_FromDouble(std::stod(it->second))); } else { PyDict_SetItemString(kwargs, it->first.c_str(), PyString_FromString(it->second.c_str())); } } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_axvspan, args, kwargs); Py_DECREF(args); Py_DECREF(kwargs); if(res) Py_DECREF(res); } inline void xlabel(const std::string &str, const std::map<:string std::string> &keywords = {}) { detail::_interpreter::get(); PyObject* pystr = PyString_FromString(str.c_str()); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, pystr); PyObject* kwargs = PyDict_New(); for (auto it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_xlabel, args, kwargs); if(!res) throw std::runtime_error("Call to xlabel() failed."); Py_DECREF(args); Py_DECREF(kwargs); Py_DECREF(res); } inline void ylabel(const std::string &str, const std::map<:string std::string>& keywords = {}) { detail::_interpreter::get(); PyObject* pystr = PyString_FromString(str.c_str()); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, pystr); PyObject* kwargs = PyDict_New(); for (auto it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_ylabel, args, kwargs); if(!res) throw std::runtime_error("Call to ylabel() failed."); Py_DECREF(args); Py_DECREF(kwargs); Py_DECREF(res); } inline void set_zlabel(const std::string &str, const std::map<:string std::string>& keywords = {}) { detail::_interpreter::get(); // Same as with plot_surface: We lazily load the modules here the first time // this function is called because I'm not sure that we can assume "matplotlib // installed" implies "mpl_toolkits installed" on all platforms, and we don't // want to require it for people who don't need 3d plots. static PyObject *mpl_toolkitsmod = nullptr, *axis3dmod = nullptr; if (!mpl_toolkitsmod) { PyObject* mpl_toolkits = PyString_FromString("mpl_toolkits"); PyObject* axis3d = PyString_FromString("mpl_toolkits.mplot3d"); if (!mpl_toolkits || !axis3d) { throw std::runtime_error("couldnt create string"); } mpl_toolkitsmod = PyImport_Import(mpl_toolkits); Py_DECREF(mpl_toolkits); if (!mpl_toolkitsmod) { throw std::runtime_error("Error loading module mpl_toolkits!"); } axis3dmod = PyImport_Import(axis3d); Py_DECREF(axis3d); if (!axis3dmod) { throw std::runtime_error("Error loading module mpl_toolkits.mplot3d!"); } } PyObject* pystr = PyString_FromString(str.c_str()); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, pystr); PyObject* kwargs = PyDict_New(); for (auto it = keywords.begin(); it != keywords.end(); ++it) { PyDict_SetItemString(kwargs, it->first.c_str(), PyUnicode_FromString(it->second.c_str())); } PyObject *ax = PyObject_CallObject(detail::_interpreter::get().s_python_function_gca, detail::_interpreter::get().s_python_empty_tuple); if (!ax) throw std::runtime_error("Call to gca() failed."); Py_INCREF(ax); PyObject *zlabel = PyObject_GetAttrString(ax, "set_zlabel"); if (!zlabel) throw std::runtime_error("Attribute set_zlabel not found."); Py_INCREF(zlabel); PyObject *res = PyObject_Call(zlabel, args, kwargs); if (!res) throw std::runtime_error("Call to set_zlabel() failed."); Py_DECREF(zlabel); Py_DECREF(ax); Py_DECREF(args); Py_DECREF(kwargs); if (res) Py_DECREF(res); } inline void grid(bool flag) { detail::_interpreter::get(); PyObject* pyflag = flag ? Py_True : Py_False; Py_INCREF(pyflag); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, pyflag); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_grid, args); if(!res) throw std::runtime_error("Call to grid() failed."); Py_DECREF(args); Py_DECREF(res); } inline void show(const bool block = true) { detail::_interpreter::get(); PyObject* res; if(block) { res = PyObject_CallObject( detail::_interpreter::get().s_python_function_show, detail::_interpreter::get().s_python_empty_tuple); } else { PyObject *kwargs = PyDict_New(); PyDict_SetItemString(kwargs, "block", Py_False); res = PyObject_Call( detail::_interpreter::get().s_python_function_show, detail::_interpreter::get().s_python_empty_tuple, kwargs); Py_DECREF(kwargs); } if (!res) throw std::runtime_error("Call to show() failed."); Py_DECREF(res); } inline void close() { detail::_interpreter::get(); PyObject* res = PyObject_CallObject( detail::_interpreter::get().s_python_function_close, detail::_interpreter::get().s_python_empty_tuple); if (!res) throw std::runtime_error("Call to close() failed."); Py_DECREF(res); } inline void xkcd() { detail::_interpreter::get(); PyObject* res; PyObject *kwargs = PyDict_New(); res = PyObject_Call(detail::_interpreter::get().s_python_function_xkcd, detail::_interpreter::get().s_python_empty_tuple, kwargs); Py_DECREF(kwargs); if (!res) throw std::runtime_error("Call to show() failed."); Py_DECREF(res); } inline void draw() { detail::_interpreter::get(); PyObject* res = PyObject_CallObject( detail::_interpreter::get().s_python_function_draw, detail::_interpreter::get().s_python_empty_tuple); if (!res) throw std::runtime_error("Call to draw() failed."); Py_DECREF(res); } template inline void pause(Numeric interval) { detail::_interpreter::get(); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, PyFloat_FromDouble(interval)); PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_pause, args); if(!res) throw std::runtime_error("Call to pause() failed."); Py_DECREF(args); Py_DECREF(res); } inline void save(const std::string& filename, const int dpi=0) { detail::_interpreter::get(); PyObject* pyfilename = PyString_FromString(filename.c_str()); PyObject* args = PyTuple_New(1); PyTuple_SetItem(args, 0, pyfilename); PyObject* kwargs = PyDict_New(); if(dpi > 0) { PyDict_SetItemString(kwargs, "dpi", PyLong_FromLong(dpi)); } PyObject* res = PyObject_Call(detail::_interpreter::get().s_python_function_save, args, kwargs); if (!res) throw std::runtime_error("Call to save() failed."); Py_DECREF(args); Py_DECREF(kwargs); Py_DECREF(res); } inline void rcparams(const std::map