colormap for a matrix

Given a matrix:

      0    0.0104    0.0027
      0.0104         0    0.0163
      0.0027    0.0163    0.0000

I am using imagesc(corrData). However I would like to only have the integers displayed on x- and y-axis ("1","2" and "3"). How can I accomplish that?

Answer 1

[Image Analyst]

Use xticks and yticks():

m = [  0    0.0104    0.0027
  0.0104         0    0.0163
  0.0027    0.0163    0.0000]
imagesc(m);
axis on;
xticks(1:size(m, 2));
yticks(1:size(m, 1));

[MiauMiau]

Thanks! A quick other question: How can I change the colormap I want to use?

[Image Analyst]

cmap = hsv(256); % Or whatever function you want like jet(), hot(), autumn(), etc.
colorbar(gca, cmap);