colormap doesn't work with bar plots in 2019a

Question

Clay Fulcher 2020-3-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/513426-colormap-doesn-t-work-with-bar-plots-in-2019a

评论： KV 2024-2-9

采纳的回答： Cris LaPierre

I have been changing the colormap in bar charts for decades. It doesn't seem to work now with bar charts in 2019a.

Previously all I had to do to change the colormap in an existing bar chart to copper: colormap copper

Now it does nothing.

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Answer 1

Cris LaPierre 2020-3-27

1
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https://ww2.mathworks.cn/matlabcentral/answers/513426-colormap-doesn-t-work-with-bar-plots-in-2019a#answer_422408

在 MATLAB Online 中打开

Not sure if it's changed, but here's an example borrowed from the doc on bar.

y = [1 3 5; 3 2 7; 3 4 2];
b = bar(y,'FaceColor',"flat");
for k = 1:size(y,2)
    b(k).CData = k;
end

If I want to use a different colormap, I could do this.

colormap copper
y = [1 3 5; 3 2 7; 3 4 2];
b = bar(y,'FaceColor',"flat");
for k = 1:size(y,2)
    b(k).CData = k;
end

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Clay Fulcher 2020-3-27

Thanks Cris. That works and I'm back running again. It's now a much more complicated way to change the colormap in a bar plot. In the past, we didn't have to go back and change the CData for each bar. Kind of frustrating since previous scripts plotting with bar and colormap no longer work. Thanks again.

KV 2024-2-9