如何添加标记到Matlab颜色栏? [英] How to add marker to matlab colorbar?

问题描述

我想在Matlab颜色栏中通过特定值添加tarker/特殊刻度线.例如，假设我的色标范围从-20到60，而我的临界值为37.53，如何通过该色标的值添加标记?

I want to add a tarker/special tick mark by specific values in my matlab colorbars. For example, lets say I have a colorbar scale from -20 to 60 and my critical value is 37.53, how can I add a marker by that value of the colorbar?

推荐答案

colorbar实际上是一个axes对象，因此您可以像添加任何坐标轴一样添加刻度线:

The colorbar is really an axes object, so you can add tickmarks like you would any axes:

myTick = 37.53;

c = colorbar();
ticks = get(c, 'YTick');
% Add your tick and sort so it's monotonically increasing
ticks = sort([ticks myTick]);
set(c, 'YTick', ticks);

编辑:在评论中，您要求一种使自定义刻度线在其余标记中脱颖而出的方法.您可以使用以下方法制作一个粗体的勾号:

Edit: In the comments, you have asked for a way to make the custom tick mark stand out amongst the rest. You can make a single bold tick mark using the following method:

% Here is an example plot
pcolor(rand(100));
c = colorbar();
myTick = 0.45; % Change this for real data

% Create a copy of the colorbar with transparent background and overlay
c2 = copyobj(c, gcf);
alpha(get(c2, 'Children'), 0);
set(c2, 'Color', 'none');
set(c2, 'Position', get(c, 'Position'));

% Give the copy a single tick mark and set its font style
set(c2, 'YTick', myTick);
set(c2, 'FontWeight', 'bold');

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