Get coordinates from tcut

ROOT
1

Hi, does anyone know how to output the coordinates of a tcut?

The cuts themselves are saved, but the data needs to be presorted before using root.

Cheers, Ben.

2

Hi,

Do you mean TCut or TCutG?

Cheers,
Philippe

3

TCutG, Cheers.

4

Hi,

TCutG is a TGraph. Use the TGraph interface to lookup its content.

Cheers,
Philippe.

5

Hi. When I do this through the gui (i.e. right click, inspect) I see the info, part of which specifies the number of points in the cut and the first point’s geometry.

Example

fNpoints 5
*fX 6595
*fY 68.7

What I would like is the geometry for -all- the points, preferably via command, but the gui is fine if not.

Cheers, Ben.

6

Hi,

Well … as for any other Graph, calling mycut.GetX() returns a Double_t* which is the array of all the X of the points … (GetN() is the number of points, you also have GetY()).
See root.cern.ch/root/html/TGraph.html for all the details …

Cheers,
Philippe