how to get the RGB number from colorbar

Hi:

I have a colorbar like below:

or to simplify this question, I assume the color is from blue (RGB [0,0,1]) to red (RGB [1,0,0]).

is there anyway to get the detail RGB nubmer for each color in this colorbar? in other words, I want to split the colorbar into 1000 parts, is there anyway to got the RGB number of each part?

Thanks!

Yu

Answer 1

[Adam]

colourmap = colormap( hAxes );

where hAxes is the axes handle. gca if you really must!

You can then interpolate it to make it bigger or smaller if you wish.

If it is a builtin colourmap though, for example 'Jet', you can just use

colourmap = jet( 1000 );

to get a 1000-element Jet colourmap (not that I am advising using Jet, it was just the one that came to mind and is most similar to the one you show).

[Yu Li]

Thanks for you reply.

you mentioned 'then interpolate it to make it bigger or smaller', could you please let me know how I can do that?

for example, the colormap is from blue ([0,0,255]) to red ([255,0,0]), is there anyway to interpolate 1000 colors between them?

Bests,

Yu