Color-interpolated patch legend is in full color instad of being interpolated

Question

liomsi liomsi 2019-3-22

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https://ww2.mathworks.cn/matlabcentral/answers/451702-color-interpolated-patch-legend-is-in-full-color-instad-of-being-interpolated

评论： liomsi liomsi 2019-3-27

Hello,

I have a patch with a gradient color. Is there a way that this gradient color could be displayed in the figure legend (I don't want a color bar)?

Below is the code to reproduce the issue. I am on Matlab R2017a under mac os.

figure
patch([0 1 1 0],[0 0 1 1],[0 1 1 0],'FaceColor','interp')
legend('Why no interpolated colors here?')

I would like something which looks like this:

But the legend of the patch is full gray color:

Thank you for your help

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liomsi liomsi 2019-3-22

I added an image (modified manually by adding a color bar over the legend) so that you can understand why I would like the gradient-color in legend.

Thanks

Jan 2019-3-25

Yes, this is clear know. Thanks for the clarification.

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Answer 1

Jan 2019-3-25

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/451702-color-interpolated-patch-legend-is-in-full-color-instad-of-being-interpolated#answer_367193

The legend command is (one of) the most frequently modified function(s) of Matlab's toolboxes. You can access the contents of the legend by some undocumented methods, see https://undocumentedmatlab.com/blog/plot-legend-customization, but this has a certain leven of fragility, such that it will work with the current Matlab version only.

Please try, if one of the methods shown in this link can solve the problem.