I have seen the following solution to create a TGraph where each point has a different color.
However, in that example, the color of each marker/point depends on the order of the point.
I wonder how the macro needs to be modified so that I can pass a property, such as the energy of the particle, and then implement the logic at
DrawCol( Double_t energy) to define the color that corresponds to each energy range.
I imagine the line
TExec *ex = new TExec("ex","DrawCol();")
would need to be updated?
On top of that, I would like to implement those methods inside a class, lets say
A. I could extrapolate this example easily?
I.e., at the implementation of
A::graphmulticol I could simply update
TExec line to the following?
TExec *ex = new TExec("ex","A::DrawCol();");
Perhaps I need to make the method static?
On the other hand, would not be handy that the
TGraph would have a method that allows to change each point color?
TGraph::SetPointColor( Int_t n, Int_t color); // Sets point "n" to color "color"