Hello,

I have a vector that has a structure (x,y,z and value). looking into the spectrogram example, i could not know how to make the x,y in the virtual value method match my x and y.

also does the raster data has to go through all the x,y in the plot ?? I want it to only go through my x and y and not all the x and y's for the whole plot.

sorry if i am asking in a stupid way, i just don't know exactly how to do it, and why i can not just give the rasterData my x,y and value immediately, and all the other x,y takes as a default No value. ??

I would really highly appreciate if some one can provide an example of how i can do this, which is how can i give the raster my x,y's and their values.

Thank you so much.