I am new to Pixel Math. I'm using a set of expressions given online that work for the author but when I try them myself I get a "channel index out of range" error. I tried it in a project and even though I was referencing three linear images it gave an error about a PSF. I then made a new project with just four linear files in it, RGB and Ha and it complained about the Green channel index being out of range. Is there a reference somewhere that would help understand what this channel index error even means?
Thanks
Garry
Thanks
Garry