MATLAB® uses a default color scheme when it displays visualizations such as surface plots. You can change the color scheme by specifying a colormap. Colormaps are three-column arrays containing RGB triplets in which each row defines a distinct color.
For example, here is a surface plot with the default color scheme.
f = figure; surf(peaks);
If you have multiple figures open, pass the
Figure object as the first argument to the
Each predefined colormap provides a palette of 64 colors by default. However, you can specify any number of colors by passing a whole number to the predefined colormap function. For example, here is the
jet colormap with five entries.
c = jet(5); colormap(c);
You can also create your own colormap as an m-by-3 array. Each row in the array contains the red, green, and blue intensities of a different color. The intensities are in the range [0,1]. Here is a simple colormap that contains three entries.
mycolors = [1 0 0; 1 1 0; 0 0 1]; colormap(mycolors);
If you are working with subplots, you can assign a different colormap to each subplot by passing the axes to the
ax1 = subplot(1,2,1); surf(peaks); shading interp; colormap(parula(10)); ax2 = subplot(1,2,2); surf(peaks); shading interp; colormap(ax2,cool(10));