Hi Rene, You're right, my function has asymptotes and I'm sure that this is the reason for this behaviour. But I cannot change the function, so I need a way to redimension the range in the y axis. About the ".root" file, the after.gif is generated from it, and the before.gif is generated during the running of the program. Cheers, Alberto Rene Brun wrote: > > Hi Alberto, > > Very likely, your function has some peculiar parameter values > that generate infinite values on the y scale. When saving the function > to a file, precomputed function values are saved at TH1::fNpx points. > An interpolation is done when reading the canvas with the function. > A canvas.root file would be more useful than gif files. > > Rene Brun > > On Thu, 1 Aug 2002, Alberto Garcia Raboso wrote: > > > Hi ROOTers, > > > > I have some profiles, already drawn, that I have to fit (so I do it). > > Everything's OK up to this point, but, when I try to draw the fit > > function, everything's KO. Although I use the "same" option, it seems > > that ROOT goes crazy, maybe because the fit function has asymptotes, and > > thus changes the scale in the y axis. > > > > I think I've tried almost everything, but I can't get to redimension it > > to the desired range from the command line. So, I've had to implement a > > loop to modify the range in which the function is drawn to manually > > specify it until it is OK. More or less, the problem is solved, but this > > forces me to stand in front of the screen during the running (a not very > > interesting activity). > > > > So, does anybody have an idea about how to arrange it so I could go to > > have a coffee? Thanks in advance. > > > > Cheers, > > > > Alberto > > > > P.S.: By the way, when I save the canvas as a ".root" file and try to > > open it later, I get a difference. Have a look on the files "before.gif" > > and "after.gif" at /afs/cern.ch/user/g/graboso/public/. The fitting > > range is [-300, 300]. > >
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