Hi, some time passed since the last time I posted here, hope everything is fine around here. I would like to know if someone knows the best and fastest way to make the kind of graphs for CIE LCH colour System. The CIE LCH colour system is defined in polar coordinates, the hue (h) value is a value that goes from 0 to 360 degrees and c(chroma) it's the radius and can shift from 0 to 100. There is another coordinate lightness, but for now the ones that matter to me are the other two, to create a 2D graph not a 3D one. With excel I was allowed to make this plot, with a macro called pollarplotter from Andy Popper. The only problem is that seems to be hard to make on that macro multiples series of data as i need to do. What I wanted is to make a circular graph with point from a total of 11 series of data that has two coordinates: one from angle that goes from 0 to 360, and a radius that can go from 0 to 100, which allows to see the difference between 11 series(in my work 11different colours). in attachment i will put a picture of what CIE LCH is, so it can become more clearier what I wish to do, than with words that can be mispelled (as I'm not a current english speaker) Hope I could explain properly what I need. Thanks in advance for any answer.