Re: TTree::Draw bug?

Andre,

I cannot reproduce this problem with version 5.12 or 5.13. Coould you send a script and short data file reproducing this problem?

Rene

Andre Lebedev wrote:
> Hello, ROOTers.
>
> I believe there is a bug in TTree::Draw() when the variable to be
> drawn has no range. That is I have a tree where for some selection of
> cuts one of the variables is 1e9. If I do
>
> swtest->Draw("x2[0]>>h(100,0,1.1e9)", "z<-830")
>
> everything goes through ok. However, if I do
>
> swtest->Draw("x2[0]", "z<-830")
>
> The code prints the number of events that pass the cut and then hangs in
> #0 0x0076b501 in isnan () from /lib/libm.so.6
> #1 0x00768a5b in pow () from /lib/libm.so.6
> #2 0x0195009c in TGaxis::PaintAxis ()
> from /usr/local/mipp/extern/root-5.12.00f/lib/libGraf.so
> #3 0x01c45f95 in THistPainter::PaintAxis ()
> from /usr/local/mipp/extern/root-5.12.00f/lib/libHistPainter.so
> #4 0x01c428a3 in THistPainter::Paint ()
> from /usr/local/mipp/extern/root-5.12.00f/lib/libHistPainter.so
> #5 0x02063775 in TH1::Paint ()
> from /usr/local/mipp/extern/root-5.12.00f/lib/libHist.so
>
> I am running ROOT 5.12/00f on gcc 4.1.1. However, I don't see the same
> problem in ROOT 5.10/00 built on gcc-3.3.4.
>
> Regards,
> Andre.
Received on Tue Nov 28 2006 - 18:58:12 MET