I’m just getting started with GD2 and have successfully made a few
dynamic PNGs. I need to make some fairly detailed line graphs on the
fly and I know that GD2 is capable of what I want but I strongly suspect
I’m reinventing the wheel badly. Are there gems or other projects that
help creating complex charts? I’ve used GDChart in the distant past
but I can’t find info about it and ruby.
The specific feature that I need is the ability to control the color of
each datapoint pip. I’m making statistical process control charts
(XBAR/R) and out of control points should be highlighted in another
color or shape.