How to capture mouse clicks in dsp.SpectrumAnalyzer, and draw on plot

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Jonathan le 24 Fév 2016

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https://fr.mathworks.com/matlabcentral/answers/269720-how-to-capture-mouse-clicks-in-dsp-spectrumanalyzer-and-draw-on-plot

Modifié(e) : Jonathan le 24 Fév 2016

I would like to add my own interactivity to the dsp.SpectrumAnalyzer plot. I would like to receive a callback when the user clicks in the spectrum analyzer plot. This way, I can determine which frequency (x-axis value) the user clicked on.

Also, I would like to draw on the spectrum analyzer plot with my own drawing code.

Are either of these things possible? Can I somehow obtain access to the plot handle, or is it some low-level C/C++ routine that is drawing directly to the screen?