Color 3-D Bars by Height
This example shows how to modify a 3-D bar plot by coloring each bar according to its height.
Create a 3-D bar graph of data from the
magic function. Return the surface objects used to create the bar graph in array
b. Add a colorbar to the graph.
Z = magic(5); b = bar3(Z); colorbar
For each surface object, get the array of z-coordinates from the
ZData property. Use the array to set the
CData property, which defines the vertex colors. Interpolate the face colors by setting the
FaceColor properties of the surface objects to
'interp'. Use dot notation to query and set properties.
for k = 1:length(b) zdata = b(k).ZData; b(k).CData = zdata; b(k).FaceColor = 'interp'; end
The height of each bar determines its color. You can estimate the bar heights by comparing the bar colors to the colorbar.