I have a greyscale image 256x256 with background NaNs and all values are between [0 1]. I then use imshow to display the image, set Clim to different ranges [-0.1,1] or [-0.1 0.5] etc. Putting -1 in the clim range helps to set background NaNs to white. I then define colormap mannually with different clim ranges and save the cmap.
Once colormap and clim is finalised I then tried to save to rgb image using ind2rgb:
rgbImage = ind2rgb(greyImage, cmap);
It gives me a different image and I think it's to do with Clim. Is there any way I can save greyscale image to rgb image using clim range and colormap I definied?