Hi Reinhart,
Can you send us something we can execute ? (without pseudo code like:
"Some more calculations"). We will gain time ...
Cheers, Olivier Couet
On Sat, 6 Nov 2004, Reinhardt Chamonal wrote:
> Here is a short version of the "script"
>
> TH2F *correl =new TH2F("Correlation", "MaPTM #3",64,0.5,64.5,64,0.5,64.5);
> for(int i=1;i<=64;i++){ //pixel x
> for(int j=1;j<=64;j++){ //pixel y
> Some calculatons
> for(int k=1;k<=ne;k++){ //loop over nb of entries
> Some more calculations
> }
> float p=covXY/(sigmaX*sigmaY);
> correl->Fill(i,j,p);
> }
> }
>
> Thanks
>
> On Sat, 6 Nov 2004, Rene Brun wrote:
>
> > Reinhart,
> >
> > Please send the shortest possible script illustrating your problem.
> >
> > A priori, it looks like you are filling bins with values of i or/and j
> > at the edge of the bin (precision problem). Instead, specify the bin
> > center.
> >
> > Rene Brun
> >
> > On
> > Sat,
> > 6 Nov 2004, Reinhardt Chamonal wrote:
> >
> > > Hi,
> > >
> > > I am using v4.00/01
> > > I am filling a 2d histogram (wihtin a C porgram) , with:
> > > correl->Fill(i,j,p);
> > > where i and j are integers and p is a float.
> > > Now my problem is that when I draw the histogram in col mode sometimes the
> > > color isn't right when my entry is 1, 1 being my maximum value. With a
> > > palette from blue to red, sometimes it would be blue and sometimes red
> > > eventhough the entry is one :(
> > > Any idea of what I might be doing wrong ?
> > > I have attached two pictures where the diagonal illustrates the problem.
> > >
> > > Cheers
> > >
> > >
> > >
> > >
> > >
> >
>
>
--
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