how to flip color in colorbar without changing the values?

colorbar
caxis([1 100]);

i want to make 100 = blue and 1 = red

thank you so much..

[John Manalo]

figure(1)

colorbar

caxis([10 100]);

fig=figure(1)

colorbar

mycmap = get(fig,'Colormap')

set(fig,'Colormap',flipud(mycmap))

this script does not work on large values like caxis([10 500]);

[Walter Roberson]

I am not sure what you are saying. You appear to be attempting to alter caxis when there is existing graphics and expecting the existing graphics to stay the same. caxis changes the entire axis at the same time.

However, when you use colorbar() a new axis is created in versions before R2014b, and without doing a lot of checking I cannot be sure that it is paying attention to changes in the caxis of the original axes. I seem to recall stepping through it all years ago and finding that it set up a listener on the original axis properties. But what it used to do isn't too important if you are running R2014b or later as colorbar() now creates colorbar objects, and I have no idea how those are programmed.

Answer 1

[Walter Roberson]

oldcmap = colormap;
colormap( flipud(oldcmap) );

[John Manalo]

Wow!!! Thank you so much Walter!!! You're the best! :) It worked! :D

[Walter Roberson]

Please mark the Answer as Accepted then so the system knows it is solved.

[prio]

Thanks a lot for this answer!