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Explicit color and legend control bars in stacked bar plot

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Bibigul Shektybayeva
Bibigul Shektybayeva on 21 Sep 2017
Commented: Alberto Mora on 25 May 2018
I would like to create a bar plot with each bar of different color, so for the example below I want to have 9 different colors, instead of each column of the matrix having a different number. Is it possible? I also would like to have the same color for the same entry in a different bar plot, such that I can see how the bars are redistributed. So, I want to have the bars corresponding to number 8 have the same color in both graphs. Could anyone suggest how to do that? a = [1,3,6;2,5,6;8,2,1] H=bar(a, 'stacked'); [a, ind]=sort(a(:)) a=reshape(a, 3, 3) figure H=bar(a, 'stacked');

Answers (1)

Niraj Gadakari
Niraj Gadakari on 28 Sep 2017
Edited: Niraj Gadakari on 28 Sep 2017
You can use the new feature, Color Data (CData) property for bar graph released in R2017b. You can change the color for a particular bar by setting the FaceColor property to 'flat'. Then change the corresponding row in the CData matrix to the new RGB triplet. Here is the link for the CData property in bar graph: CData
For example,
a = [1,3,6;2,5,6;8,2,1];
H=bar(a, 'stacked');
colorSet = [];
for i = 1:3
myColors = round(rand(3,3),1);
colorSet = [colorSet myColors];
H(i).FaceColor = 'flat';
H(i).CData = myColors;
end
This will display the bar plot with different colors. Similarly for the different bar plot you can set the CData property of the other bar graph to the above colors.
  2 Comments
Alberto Mora
Alberto Mora on 25 May 2018
Same of my problem. You just declare in FaceColor field:
H(1).FaceColor = 'b';
H(2).FaceColor = 'r';
and so on...

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