Set Colorbar TickLabels and TickMarks

Question

Konstantinos Tsitsilonis 2017-8-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/352290-set-colorbar-ticklabels-and-tickmarks

评论： Sebastian Lopez 2020-11-5

采纳的回答： Konstantinos Tsitsilonis

在 MATLAB Online 中打开

Hi all,

I am having trouble setting my colorbar ticklabels as I wish.

Specifically I have 8 points, and have created a colormap such that these 8 points get values from the darkest to the lightest color in the colormap. Similarly, I would like my colorbar's labels to follow the same pattern. Below is the code that I have written:

 cmapdef = colormap(winter) ; %Define Colormap
 cmap = cmapdef(1:8:end, :) ; %Find Values of colors corresponding to each point plotted
 cbh = colorbar('YTickLabel', num2cell(1:8)) ;

However, the resulting colorbar has labels going as follows: 1 2 3 4 5 6 7 8 1 2 3. Instead I would expect the whole span of the color bar to be covered by 1 2 3 4 5 6 7 8.

What am I doing wrong?

Thanks in advance for your responses,

KMT.

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José-Luis 2017-8-10

Do you mean you want colored text in your colorbar?

Konstantinos Tsitsilonis 2017-8-10

编辑：Konstantinos Tsitsilonis 2017-8-10

Hi Jose,

I would not like to have colored text. It is just that tick labels appear on the color bar on the following order: 1 2 3 4 5 6 7 8 1 2 3, instead of the normal 1 2 3 4 5 6 7 8.

Thanks anyway!

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Answer 1

Konstantinos Tsitsilonis 2017-8-10

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/352290-set-colorbar-ticklabels-and-tickmarks#answer_277582

编辑：Konstantinos Tsitsilonis 2017-8-10

在 MATLAB Online 中打开

Actually I managed to find a fix.

All the ticks range from 0 to 1, and they should have a tick label associated to them.

Therefore the following code solves the problem:

 cmap = colormap(winter(8)) ; %Create Colormap
 cbh = colorbar ; %Create Colorbar
 cbh.Ticks = linspace(0, 1, 8) ; %Create 8 ticks from zero to 1
 cbh.TickLabels = num2cell(1:8) ;    %Replace the labels of these 8 ticks with the numbers 1 to 8

2 个评论
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Peng He 2019-6-26

That code only put one tick for me : (

Sebastian Lopez 2020-11-5

Works perfect! Thank you

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Answer 2

José-Luis 2017-8-10

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/352290-set-colorbar-ticklabels-and-tickmarks#answer_277534

在 MATLAB Online 中打开

plot(rand(10,1))
cH = colorbar;
cH.TickLabelInterpreter = 'tex';
idx = 955;
for ii = 1:numel(cH.TickLabels)
    cH.TickLabels{ii} = [sprintf('\\color[rgb]{%f,%f,%f} ', rand(1,3)), char(idx)];
    idx = idx + 1;
end