Hi Root Experts,
I am plotting a TGraph and would like to scale the x-axis by a number. That is, I would like to multiply every x-axis point by some value. Is this possible?
Any help would be greatly appreciated,
See this previous post:
[url]Changing the scale for graph?
In case you’d like to a play with histogram, see also:
I’m not sure if this is fully kosher, but suit yourself :
#include "TAxis.h"
#include "TH1.h"
#include "TArrayD.h"
Double_t ScaleX(Double_t x)
{
Double_t v;
v = 10 * x + 100; // "linear scaling" function example
return v;
}
Double_t ScaleY(Double_t y)
{
Double_t v;
v = 20 * y + 200; // "linear scaling" function example
return v;
}
Double_t ScaleZ(Double_t z)
{
Double_t v;
v = 30 * z + 300; // "linear scaling" function example
return v;
}
void ScaleAxis(TAxis *a, Double_t (…