display data value on pcolor

% histogram
x = 0:0.1:3.5;
y = 2.5:2:40.5;
for i = 1:size(y,2);
    z(i,:) = histc(mag_fit(i,:),x);
end
z = z/sum(z(i,:))*100 % percentage occurence at ceratin x and y
pcolor(x,y,z)

I have plotted a pcolor and I would like to show the z number in each cell. How could I possibly do that?

Answer 1

[Image Analyst]

Not exactly sure what you want, especially since we can't run your code because you didn't supply mag_fit. Perhaps this is what you might like: http://www.mathworks.com/matlabcentral/fileexchange/32273-im2html-m by Steve Eddins, the leader of the imaging group at the Mathworks

Essentially, you can colormap any value into an RGB color and that value is displayed in a box of that color with the RGB values imprinted over it.

By the way, did you know pcolor leaves off the last row and last column? Prove it yourself and run this pcolor(rand(3,3)); and see if you get a 3 by 3 image (you won't).

[Ed Chan]

Sorry. mag_fit is the speed data. Please see attached. I am trying to put the speed into bins and calculate z as the % occurrence in each level of height. As the colour is showing the %, it would be clearer if the exact % of cell can overlay on top of the colour