Custom Colors for Stacked Bar Chart

This is my current stacked chart. How do I changed the color of each section? So for example for the first bar "Con" I would like the red and blue section to be one color, the blue and green to be another and the middle orange and purple to be a third color. In addition would I be able to do that for each bar?

Answer 1

[Adam Danz]

Set the FaceColor property to Flat and then define the colormap which specifies the color for each segment.

Here are two demos

• https://www.mathworks.com/matlabcentral/answers/553894-barcharts-colours-based-on-other-vectors#answer_456622
• https://www.mathworks.com/matlabcentral/answers/486175-how-can-i-change-colors-and-generate-errorbars-in-a-bar-graph#answer_397071

For stacked bar plots, it will look something like this,

bh = bar(rand(3,6),'stacked');  
set(bh, 'FaceColor', 'Flat')

bh(1).CData = [0 0 1];  % Change color to first level
bh(2).CData = [0 1 0];  % Change color to second level, etc...

To set all colors in 1 line after setting FaceColor to Flat,

colors =  mat2cell(jet(numel(bh)),ones(numel(bh),1), 3); 
set(bh, {'CData'}, colors) % using jet colormap

% or to assign pairs of colors,
colors = repelem(mat2cell(jet(numel(bh)/2),ones(numel(bh)/2,1), 3),2,1); % requires even number of objects in bh
set(bh, {'CData'}, colors)