Psuedo colour plots

Hi All, just wondering if the following can be done.

Given a set of data, made up of (x,y,z) coordinates, is it possible to make a image where z defines the colour used (ranging from 0 to 1) and x and y define the position, then have matlab interpolate between these points to give a psuedo colour image?

The only extra catch is that the x and y values are not evenly spaced either horizontally or vertically.

Cheers! Rhys.
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