I have generated a Voronoi diagram and calculated the areas of the polygons formed. I now want to colour code my polygons by area, for example, for areas between 10-20, colour this red. Then 20-30 blue... etc. Ideally, I would like to have a continous colour fade from smallest-largest polygon area. Could someone please shed some light on how to do this. I have currently used the patch(x,y,c) function, but this does not colour by area. Thanks in advance.