Sorry, I don’t get. You are looking for a direct way to pass float to an eve element and set the color through it? This doesn’t exist … you’ll either have to map them yourself, use TColor::GetColorPalette() as shown in the post you reference, or use TEveRGBAPalette which is sort of a wrapper around it (it has an option to interpolate between palette values). TEveDigitSet / QuadSet / BoxSet can work with the EveRGBAPalette directly, allowing you to fiddle with active range and cuts through GUI. See eve/tutorial/boxset.C.
Using TColor, i am able to get something which is close to i want.
Thanks for that.
Is it possible to also display the correspond color bar along with colored boxes so that one can easily see which color corresponds to lower value and which corresponds to higher value.