Change Colormap

Set the colors for the filled contour plot by changing the colormap. Pass the predefined colormap name,hot, to thecolormapfunction.

[X,Y,Z] = peaks; figure contourf(X,Y,Z,20) colormap(hot) title('Hot Colormap')

Control Mapping of Data Values to Colormap

Use only the colors in the center of thehotcolormap by setting the color axis scaling to a range much larger than the range of values in matrixZ. Thecaxisfunction controls the mapping of data values into the colormap. Use this function to set the color axis scaling.

caxis([-20,20]) title('Center of Hot Colormap')