What do you mean ? Do you want to change the palette ? The internal ROOT color model is RGB and TColor class provides tools to convert colors from RGB to HLS model and vice versa. I do not understand what you will get using CMY compare to RGB. In the few lines you sent there is no mention of the color model used. Can you explain more ?
Figures that are intended to be printed in color must be prepared as CMYK (i.e., four-color) files, not RGB files. It is not possible for conventional printing presses to use RGB files. (RGB files cannot be used for printing and must be converted to CMYK.)
Ok … but how do you indent to print the pictures ? using PostScript ? gif ? pdf ? … the way the color are encoded internally in root doesn’t change the color … yellow is yellow what ever the color encoding you use … My understanding is that your printing device needs CMYK right ? if yes, can you tell what kinf of file you’ll indent to print ?
I am sorry I donot know. I just send my draft to APJ, the editor told me to convert the figure. I use “photoshop” to convert the color from RGB to CMYK, but the figure became
fuzzy. So I’d like to plot the CMYK mode figure.
Ok, send me your EPS file. I will try to convert it by hand using the appropriate PS operators. Then your can send it back to you editor. If that works, I’ll try to add a special PS option to use CMYK instead of RGB (for PS/EPS files only). CMYK is a subtractive color model (RGB is additive). It is for printing purposes only so it should be at the EPS level only.