Rene Brun wrote: > This could be implemented. However, to be consistent, one would haveto > also implement > TH1::SetRange(xmin,xmax,ymin,ymax) > TH1::setRange(xmin,xmax,ymin,ymax,zmin,zmax) > TH1::SetRange(binx1,binx2) > TH1::SetRange(binx1,binx2,biny1,biny2),etc > TH1::SetRange(binx1,xmax,...) and all possible combinations > > If we implement TH1::Draw(xmin,xmax), we should also support > all the above combinations. > and what about TH1::Fit > and what about the function you are proposing below as well. Of course, this seems to be some work... But zooming a histo. is a very common action of users, I guess, and interactive zoom with the slider is not precise at all, so there should be an easy way to do it. Is someone sharing this point of view ? > > 2) What about a TH1::GetIntegral(xmin,xmax) function to have to sum of > > weights between xmin and xmax ? > > I would prefer TH1::GetIntegral(binx1,binx2) and same for 2-D. > Otherwise if xmin,xmax do not coincide with the lower/upper limits > of a bin, do you expect this function to compute an approximation > for the integral in the bins at the edge, or do you simply want > to compute the bin number where xmin and xmax (bin1,bin2)correspond > and return the integral as the suim of bin contents from bin1 to bin2 > included? Agree. TH1::GetIntegral(bin1,bin2) would be nice enough. -- APHECETCHE Laurent (mailto:aphecetche@ganil.fr) GANIL, B.P. 5027, 14076, Caen Cedex 5, France Vox: +33 (0)2 31 45 45 85 - Fax: +33 (0)2 31 45 46 65 WWW: http://ganp03.in2p3.fr/nof/ & (perso.) http://www.mygale.org/~p0mp0n
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