How to plot just a colorbar without plot?

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Mr M.
Mr M. 2018-7-23
评论： Turlough Hughes 2022-1-4
I would like to plot just a colorbar on a subplot without real figure. I can do this, but I want to shrink the figure area. How to make zero figure width and wide colorbar?
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Mr M.
Mr M. 2018-7-26
I want a colorbar without graph/plot, and not on the side.
jonas
jonas 2018-7-26
Can you draw an image in MSpaint of what you want?

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回答（1 个）

Benjamin Kraus
Benjamin Kraus 2018-7-26
A colorbar must be attached to an axes, so you have (at least) two options:
  1. Create an axes, attach a colorbar, then make the axes invisible.
  2. Create an axes, attach a colorbar, then move the axes and colorbar separately.
For example:
ax = axes;
c = colorbar(ax);
ax.Visible = 'off';
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Benjamin Kraus
Benjamin Kraus 2018-12-17
The Visible property on axes controls the visibility of the axes (the backdrop, the rulers, the ticks, etc.) but does not control the visibility of the plots within the axes (lines, bar graphics, etc.). Is this the issue you are seeing? If not, please post some example code along with a screenshot of what you are seeing, and someone should be able to help you.
Turlough Hughes
Turlough Hughes 2022-1-4
Ran in:
One can also center the colorbar in the figure as follows:
hf = figure('Units','normalized');
colormap turbo
hCB = colorbar('north');
set(gca,'Visible',false)
hCB.Position = [0.15 0.3 0.74 0.4];
hf.Position(4) = 0.1000;

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