I want to redefine the legend contours within a specific region of my plot. Someone posted a picture of a plot on here, but didn't describe how they generated it. I want something similar, where I don't need to differentiate within a large region of my plot (from 10 to 125 and -125 to -10 in the example below), but care about little differences within a certain type of region (the -10 to 10 region in the picture below).
Could anyone please help me how to generate something similar? Thank you!
Just for completeness: I want to have 10 different contours/colors for values between 0 and 2, and 5 different contours/colors between 2 and 20