how to built custom a colormap

I want to built "colorRGB" matrix with k-by-3 matrix (k is predefined number by the user)

Let's say: I need 5 colors (k=5; & random color, but NOT include white color)

colorRGB=[0, 0.4470, 0.7410; 0, 0, 1; 0.85, 0.32, 0.09; 0, 0.75, 0.75; 0.25, 0.25, 0.25];.

colorRGB=[0, 0.4470, 0.7410

0, 0, 1

0.85, 0.32, 0.09

0, 0.75, 0.75

0.25, 0.25, 0.25]

How can I do that? In case I want to build 100 random color matrix. How can I do that?

(Plz see picture below for visualization)

Answer 1

[Image Analyst]

Try this:

yourColormap = rand(k, 3); % Colormap with k random colors.

[madhan ravi]

https://www.mathworks.com/help/matlab/ref/hsv.html#bviswnp-5 - can it be also used @sir Image Analyst?

[Image Analyst]

It can be used if you want that colormap. However that is not a random colormap like the poster wanted so that particular colormap would not be used in "ha ha"'s case.

[madhan ravi]

Thank you for clarifying sir Image Analyst.