I am looking for a program that can plot a heat map with quiver plot (aka. velocity plot) on top of it when given a 2D array as input. Is possible, free, Python/Java/C++/Matlab/R and works with Windows 7 SP1 x64 Ultimate.
Heat map using matplotlib.pyplot.pcolor():
I would like to combine those two:
The arrows of the quiver would represent the variation of the values of the heat map.