MATLAB: How to manually define value range in colormap

colormapMATLAB

Hi. I'm trying to create an image from a txt file which contains X, Y, Z values, in which Z is the pixel intensity. (thanks to this thread 🙂 -> https://kr.mathworks.com/matlabcentral/answers/339147-how-to-create-an-image-in-matlab-from-txt-file. I'm only a beginner to Matlab, and my questions may sound a bit silly. My apology!

I plotted as below:

1) But I'd like to give a certain range a certain color as the image below (the image was retrieved from Hegedüs et al. 2007 Applied Optics):

2) Or in a greyscale range below (from Barta et al. 2014 Applied Optics):

I'm so sorry to ask too much, but could anyone help me out please?

Thank you in advance.

Best Answer

Read about caxis it will help you to define the range in the colormap.

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%%Arrange the colors range
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