[ROOT] Re:SetRange crash

From: Victor Krylov (krylov@cv.jinr.ru)
Date: Tue Aug 08 2000 - 16:32:25 MEST


Hello Rene,

I have:
ROOT Version   2.23/12   1 February 2000 for linux Radhat 6.1
SetRange crash macro:
{
    gROOT->Reset();
    gROOT->Time();

    TCanvas c1("c1","Banana Plant Items",1);
    TPad p1("p1","p1",0.1,0.1,0.99,0.99);
    p1.Draw();
    p1.cd();
    TH1F h1("h1","h1",10,0,10);
//...
    h1.SetBins( 10, 101, 110 );
    h1.GetXaxis()->SetRange( 101, 110 );
//...
    h1.Draw();

    gROOT->Time();
}
root [0] .x Range.C
Error in <TPad::Range>: illegal world coordinates range: x1=201.125000,
y1=-13125001765323666448603752169472.000000, x2=99.875000,
y2=118125002589728982276512847757312.000000
Error in <TPad::RangeAxis>: illegal axis coordinates range: xmin=191.000000,
ymin=0.000000, xmax=110.000000, ymax=105000004451182774671796619706368.000000

Fatal in <operator new>: storage exhausted
aborting
Aborted (core dumped)
///////////////
By the way, if I change draw options or change range
of some axis on the screen by hand and then call
SetBins(... for a histogram that we will have unpredictable
results of the axis range on the screen (it reason for using
TAxis::SetRange after calling TH1::SetBins).
Now I call TAxis::SetRange() with default parameters,
it works...

Regards,
    Victor
Phobos/RHIC/BNL

Rene Brun wrote:

> Hi Victor,
> I suppose that you mean SetRange and not SetRegion.
> I cannot repdoduce your problem. Could you specify which version/machine
> you use?
> Could you send me a short macro featuring this problem?
>
> Rene Brun
>
> Victor Krylov wrote:
> >
> > Hello everybody,
> >
> > Please, check function TAxis::SetRegion()
> > If you set wrong limits (for example not starting from zero)
> > sometimes ROOT will be crashed after call Draw function without
> > any notes...
> >
> > Debuger info:
> > #Error in <TPad::Range>: illegal world coordinates range: x1=427.500000,
> > y1=0.640624, x2=182.500000, y2=0.950798
> > #Error in <TPad::RangeAxis>: illegal axis coordinates range:
> > xmin=403.000000, ymin=0.671641, xmax=207.000000, ymax=0.919780
> > #Fatal in <operator new>: storage exhausted
> > #aborting...
> >
> > Regards,
> >     Viktor



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