B4J Question Spectrogram What is the best way to do this?

Hi

I wish to make a spectrogram panel in a custom view should I use a canvas or an image for the spectrogram panel and why. I am not doing an FFT to get the spectra as the frequency values come in from a spectrum analyzer.

The panel will take data from a circular buffer of spectrum data points and plot them on the spectrogram matrix.

Best regards
Rob