Getting N colors using imagesc

Dear all, for one of my project I have to display the values of some matrices. These matrices are made up of integers number from 1 to N (~700). I have displayed these matrices using imagesc, but my feeling is that only 64 colors are displayed so that I actually lose information about what is going on. So my question is: how can I get imagesc (or another function) to show all the N colors so that the figure looks "smoother" (both on screen and on file?). Should I use some special renderer? (I am using painters now)

Thanks in advance for your help, Cheers, Luca

Answer 1

[Walter Roberson]

Possibly the colormap you are using only has 64 colors by default.

When you are loading a colormap, you give its name; the name of the colormap is really a function, and the function allows an optional argument that indicates the number of entries to generate.

For example, instead of saying

colormap(hot)

you can say

colormap(hot(700))