more on profiles

Wolfgang Korsch (wkorsch@server1.pa.uky.edu)
Tue, 25 Mar 1997 07:44:43 -0700

Hi ,
I used the profile option a lot yesterday and I encountered
some crashes which I don't understand at all.
I have an ascii file which has x and y values (both have format
'real'). The x-values range from -200.to 200.
Now I want to generate some profile plots and therefore I do the
following:

Root> ntuple->Draw("y:abs(x)>>hprof","x>0","prof");


---> works fine

Root> ntuple->Draw("y:abs(x)>>hprof","x>67","prof");


---> works fine


Root> ntuple->Draw("y:abs(x)>>hprof","x>68","prof");


---> floating point exception


(I also get often a 'floating point exception' when
I use intervalls such as 'x>10 && x<40')

I tried to define 'hprof' first, but nothing helped.

Otherwise things work fine so far.

Wolfgang