ggplotd - curve colour

[Edwin van Leeuwen via Digitalmars-d-learn]

On Sunday, 8 May 2016 at 01:50:38 UTC, brocolis wrote:
> How do I set the color of a curve with ggplotd?
> Thanks.

Also see the below example on how to merge Colour with an 
existing range of points using mergeRange:

(Copied from http://blackedder.github.io/ggplotd/stat.html)

void main()
{
   /// http://blackedder.github.io/ggplotd/images/function.png
   import std.random : uniform;
   import std.typecons : Tuple;
   import ggplotd.stat : statFunction;
   import ggplotd.ggplotd : GGPlotD;
   import ggplotd.geom : geomLine, geomPoint;
   import ggplotd.aes : mergeRange;

   auto f = (double x) { return x / (1 + x); };

   auto aes = statFunction(f, 0.0, 10);
   auto gg = GGPlotD().put(geomLine(aes));

   // Generate some noisy points
   auto f2 = (double x) { return x / (1 + x) * uniform(0.75, 
1.25); };
   auto aes2 = f2.statFunction(0.0, 10, 25);

   // Show points in different colour
   auto withColour = Tuple!(string, 
"colour")("aquamarine").mergeRange(aes2);
   gg = gg.put(withColour.geomPoint);

   gg.save("function.png");
}