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Today, I will talk to you about how to reverse the color of Colorbar in MATLAB but not the scale of Colorbar. Many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

First take a look at two uses of the colormap function (from MATLAB Documentation):

Colormap (map) sets the colormap for the current figure to the colormap specified by map.

Example

Colormap (target,map) sets the colormap for the figure, axes, or chart specified by target, instead of for the current figure.

Usage 1:

Colormap (map)

In that case, it sets the same colormap for the current entire figure

Usage 2:

Colormap (target,map)

In this way, it sets the colormap in the specified target to map instead of setting the colormap of the entire current figure to map.

When we have multiple coordinate systems in a window, and we want to set a different colormap for each coordinate system, then we can use this usage 2.

Map can be the following, as mentioned earlier in this post: write your own code to make a good-looking histogram tweet

If you want to reverse the color of the colorbar, you can do this:

Colormap (h3, flipud (jet))

The flipud function flips the array up and down, and here jet is the color in colorbar (n-row, 3-column matrix), so flipud (jet) flips the color of colorbar.

Let's look at an example:

Put two coordinate systems in one figure, put the surface drawn by mesh in the coordinate system and display colorbar. For convenience, we directly use the peaks function of MATLAB to generate the mesh data, and then mesh it. I want to reverse the colorbar color in the second coordinate system, as follows:

You can see that the color of the colorbar is reversed, and the color of the surface in the picture is reversed accordingly.

Note: if you set the YDir property of Colorbar to reverse, you can also reverse the color of colorbar, but the color of the surface in the picture will not be reversed, and the scale of colorbar will be reversed.

The code in the figure above:

Clc

Clear

Close all

[X, y, z] = peaks

H2 = subplot (211)

Mesh (x, y, z, 'CData', z,' Parent', H2)

Colormap (H2, jet)% actually defaults to this, and you don't have to write it.

Shading interp

Colorbar

Title ('does not reverse the color of colorbar')

H3 = subplot (212)

Mesh (x, y, z, 'CData', z,' Parent', h3)

Colormap (h3, flipud (jet))% reverses the color of colorbar

Shading interp

Colorbar

Title ('reversed the color of colorbar')

After reading the above, do you have any further understanding of how to reverse the color of Colorbar but not the scale of Colorbar in MATLAB? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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