Hot colormap array
c = hot
c = hot(m)
c = hot returns the hot colormap as a three-column
array with the same number of rows as the colormap for the current
figure. If no figure exists, then the number of rows is equal to the
default length of 64. Each row in the array contains the red, green,
and blue intensities for a specific color. The intensities are in
the range [0,1], and the color scheme looks like this image.
Plot a surface and assign the hot colormap.
Get the hot colormap array and reverse the order. Then apply the modified colormap to the surface.
c = hot; c = flipud(c); colormap(c);
Get a downsampled version of the hot colormap containing only twenty colors. Then display the contours of the peaks function by applying the colormap and interpolated shading.
c = hot(20); surf(peaks); colormap(c); shading interp;