Hi Dave,
You can use the mouse when you use the DrawPanel. However, this is not
very precise and drawing anyhow a 1000x1000 TH2 takes time. The solution
is
to set the range for the x and y axis. This is valid for 1-d,2-d 3-d
plots.
h->GetXaxis()->SetRange(0,100);
h->GetYaxis()->SetRange(0,100);
h->Draw();
> Question # 2:
>
> In nearly every ROOT session, I end up with:
>
> *** Break *** segmentation violation
>
> This, of course, means I did something wrong. Is there anyway to recover
> from this without starting over?
>
I cannot do much with just this information. Could you run Root under
the debugger and send me the traceback when you get the segmentation
violation. To use the debugger (I assume you are on a Unix system), use
gdb
gdb root.exe
run
... your session
gdb> info stack
Also some explanation of what you are doing what the crash appears would
be welcome.
Rene Brun