{

String tutorial_data_path(OPENMS_DOC_PATH + String("/code_examples/data/Tutorial_Spectrum1D.dta"));

QApplication app(argc, const_cast<char**>(argv));

PeakMap exp;

MSSpectrum spec;

// demonstrating how to load a single spectrum from file formats which only contain a single spec

// alternatively: use FileHandler().loadExperiment() if you need an experiment anyway

FileHandler().loadSpectrum(tutorial_data_path, spec, {FileTypes::DTA});

exp.addSpectrum(spec);

LayerDataBase::ExperimentSharedPtrType exp_sptr(new PeakMap(exp));

LayerDataBase::ODExperimentSharedPtrType on_disc_exp_sptr(new OnDiscMSExperiment());

Plot1DWidget widget(Param(), DIM::Y, nullptr);

widget.canvas()->addPeakLayer(exp_sptr, on_disc_exp_sptr);

widget.show();

return app.exec();