add docs - using matplotlib from C# via pythonnet #442

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1. JimSEOW commented on Apr 5, 2017

   

   JimSEOW

   on Apr 5, 2017

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   In PyPlot

   The ploting is done through buffer and MemoryStream(buffer).
   It would be great if we could get this method to work for integrating MatPlotLib in Python for .NET

           public void UpdatePlot()
           {
               using (Py.GIL())
               {
                   if (Local.HasKey("fig"))
                   {
                       Python.PushLocal(Local);
                       Python.RunString(
                           "fig.set_size_inches(__figwidth__, __figheight__)" + Environment.NewLine +
                           "fig.tight_layout()" + Environment.NewLine +
                           "buf = io.BytesIO()" + Environment.NewLine +
                           "fig.savefig(buf, dpi=__dpi__, format='png')" + Environment.NewLine +
                           "buf_out = np.array(buf.getbuffer(), dtype = np.uint8)"
                       );
                       byte[] buf = Python.Get("buf_out");
                       Python.RunString(
                           "del buf_out\n" +
                           "del buf"
                       );
                       Local = Python.PopLocal();
                       Stream stream = new MemoryStream(buf);
                       Image image = Image.FromStream(stream);
                       PictureBox.Image = image;
                   }
               }            
           }
   
2. yagweb commented on Apr 6, 2017

   

   yagweb

   on Apr 6, 2017

   Contributor

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   @JimSEOW Currently I don't use MatplotLib in C#, but I was thinking about an implementation of MatplotLib embedding as an example for pyscope, which will cover the functions of PythonInterface and PyPlot you just mentioned.

   This code provides one good idea and itself can be greatly optimized. Other suggestions are also welcomed and thank you.
3. den-run-ai commented on Apr 6, 2017

   

   den-run-ai

   on Apr 6, 2017

   Last edited by den-run-ai

   ContributorAuthor

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   This will be great enhancement for clrmagic in jupyter notebooks:

   https://groups.google.com/forum/m/#!topic/jupyter/Wy7LnDF4O_Q
4. den-run-ai

   self-assigned this

   on May 16, 2017
5. den-run-ai

   added

   documentation

   enhancement

   easy

   on May 16, 2017
6. yagweb commented on Jun 3, 2017

   

   yagweb

   on Jun 3, 2017

   Contributor

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   I write a demo to show how to use matplotlib via pythonnet at here.

   It used the pyscope function, and covered all the functions of PythonInterface.

   @JimSEOW You might be interested in this.

   👍React with 👍4Reacted by JimSEOW, Denis Akhiyarov, maye1115 and melemo2
7. filmor

   closed this as completedon Jun 14, 2022