how to create a colormap to represent an image with negative pixels

Hello,

After some operations on two images I1 and I2 , you create a third image M such that M=(I1-I2/(I1+I2). M would contain negative pixels and positive pixels with values ranging between -1 to 1. How one could create a colormap that represent these pixel values in colors?

Thank you!

Answer 1

[Image Analyst]

Use colormap() and colorbar(). Use caxis() to specify what numerical values correspond to the ends of the colorbar.

[jack]

Thank you!