Patrick, There was an exchange of mails on this topic in the past few weeks. The solution is simple: substract the origin offset to your x data and the problem is solved. TGraph uses single precision internally to store the X and Y arrays. Since TGraph was initially designed as a graphics object, the precision was not an issue. One could obviously provide a TGraph double precision ! Is this an urgent request ? Rene Brun Patrick Dupre LCMI wrote: > > > Hello, > I already send this message, but it stays whitout any answer, so I do > resubmit it. > > > > I need to plot data from, let say 25125 to 25128, so I need to do this by > > using doubles. TGraph do not accept the double, so what it the solution ? > > Thank. > PS Using float gives bad display. > > -- > --- > ============================================================================== > Patrick DUPRE | | Tel: (33 4) 76-88-78-51 > CNRS/LCMI (GHMFL) | | Fax: (33 4) 76-85-56-10 > 25 Rue des Martyrs, BP 166 | | http://eschyle.polycnrs-gre.fr > F-38042 GRENOBLE Cedex 09 | | email: pdupre@polycnrs-gre.fr > ==============================================================================
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