How do I label pcolor y and x axes please

How do i label pcolor axes please

Answer 1

[Walter Roberson]

img = sort(randi([0 255], 240, 320, 'uint8'));
subplot(1,2,1); imagesc(img); colormap(hot); xlabel('x'); ylabel('y');
subplot(1,2,2); p = pcolor(img); p.EdgeColor = 'none'; colormap(hot); xlabel('x'); ylabel('y');

(The two have diffrent defaults about which direction Y increases.)