I have some X,Y,Z data that I want to turn into a gray or colour mapped
contour plot.
The data aren't necessarily gridded, so I need interpolation.
I'm a newbie to Octave/Matlab, and could use a hint.
I've played with contourf(), which I can make work for functions, but I
need to load external data that is
organized as columns of X,Y,Z in ascii.
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