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