How to color each group of a bar plot into a different color

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priyam kar
priyam kar 2023-12-8
评论： Dyuman Joshi 2023-12-8
I have a bar plot with 16 groups with each group having 3 bars. I want to color each group of bar plot into a different color. Someone please help me out with this.

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采纳的回答

Dyuman Joshi
Dyuman Joshi 2023-12-8
Ran in:
%Random data
mat = randi(20, 16, 3);
%Plot bar graph
b = bar(mat);
n = size(mat,1);
%Get color for each group
color = hsv(n);
%Change the color for each group
for k=1:size(mat,2)
b(k).FaceColor = 'flat';
b(k).CData = color;
end

更多回答（1 个）

Adam Danz
Adam Danz 2023-12-8
编辑：Adam Danz 2023-12-8
Ran in:
h=bar(x,'grouped') where x is an n by m matrix, will create a bar chart with n groups that each have m bars. h will be a 1xm matrix of bar handles.
To apply a color to each group, create a n by 3 matrix of RGB color values that defines the color for each group. Then apply the color matrix to the CData property of each bar object (R2017b or later). You'll also need to set FaceColor to flat.
rng default
data = rand(16,3);
b = bar(data, 'grouped');
colors = rand(height(data),3);
for i = 1:numel(b)
b(i).FaceColor = 'flat';
b(i).CData = colors;
end

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