Fix a colormap between two values

Question

Thomas Barbier 2019-6-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469017-fix-a-colormap-between-two-values

评论： Adam Danz 2019-6-26

Dear all,

I am trying to simulatine the imaging of an object from a camera and a depth sensor. I'd then like to plot the simulated image thanks to the scatter tool, specifying depth as colormap. I make a new image at each time step. The camera motion is towards the object (and the object rotates), hence the overall depth diminishes. However, at each time step the colobar is mapped from depth of that time step:

At t = 0:

At t = end:

A video is available: https://youtu.be/ZlcGmUe4qoE

I would like to "fix" the colorbar between two handpicked values [depthMin depthMax], so that the first image is generally blue and the last image is generally yellow (that the colorbar doesn't "slide"). And if possible I'd like to use Matlab embedded colormaps.

Do you know a trick to do that ?

Thanks for your help.

Regards

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Answer 1

Adam Danz 2019-6-26

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469017-fix-a-colormap-between-two-values#answer_380915

在 MATLAB Online 中打开

"I would like to "fix" the colorbar between two handpicked values [depthMin depthMax], so that the first image is generally blue and the last image is generally yellow "

caxis([depthMin, depthMax])

https://www.mathworks.com/help/matlab/ref/caxis.html