Walter Karig wrote: > > How to define a graphical cut (like NTUPLE/GCUT in PAW)? > Graphical cuts (a la PAW) are not yet supported by Root. This is something pretty simple to add and I will include this facility in the next version. I am thinking to provide the following functionality: Create an object of the class TCutG derived from TGraph. The graphics editor will be modified to include the creation of a TCutG object (and its editing). In a macro, you could also do: Root > TCutG c1("c1",n,x,y) (see TGraph) To use the graphical cut, you simply specify the name of the cut in the selection expression (including standard boolean operations). A TCutG object could also be referenced in a TCut (new class announced in version 1.00 release notes). Any comments on the above are welcome. Rene Brun
This archive was generated by hypermail 2b29 : Tue Jan 04 2000 - 00:26:18 MET