YTickLabels at specified RGB values in colorbar

Question

Subhiksha 2013-10-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/90382-yticklabels-at-specified-rgb-values-in-colorbar

编辑： Adam Filion 2013-10-16

Hello all,

I have a jet colorbar appearing with my figure. I want to set the 'YTickLabels' at specified RGB values of the colorbar (i.e) at the points that bears the color with RGB value [0.3333 1 0.6667] in the colorbar i need to be named as 'A'.

Is there a way to do this???

Thanks in advance for the help.

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Answer 1

John Barber 2013-10-16

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/90382-yticklabels-at-specified-rgb-values-in-colorbar#answer_99867

Here is an example:

 hSurf = surf(peaks);
 hCbar = colorbar;
 set(hCbar,'YTick',[-5 0.3 6],'YTickLabel',{'Blue','Green','Red'})

You will have to determine the y-values that correspond to the labels you want. For this, you should understand the different methods of colormapping ( direct vs. scaled ) and the axes CLim property. Here are links to some of the relevant documentation to help you get started:

http://www.mathworks.com/help/matlab/ref/caxis.html?searchHighlight=cdatamapping

http://www.mathworks.com/help/matlab/ref/surface_props.html?searchHighlight=cdatamapping

http://www.mathworks.com/help/matlab/ref/imagesc.html?searchHighlight=cdatamapping

http://www.mathworks.com/help/matlab/ref/image.html