Hi Silvia, Give a name to each of your graphs when you save them on the file. Example: name[20]; for (Int_t i=0;i<24;i++) { sprintf(name,"Graph%d",i); gr[i]->Write(name); } Rene Brun Silvia Borghi wrote: > > I create an array of 24 graphs (the name of graph is gr[i]), and I save > them on a file, but when I open this file and use the command fill.ls(); I > discover that the name of the graph is Graph;1 Graph;2 and soon on (and > not gr[i]). > So when I could not draw the Graph that I want but only one, because I > could not distinguish by the name (I try to put Graph;1 or (Graph;1) or > ("Graph;1") but it gives me an error) > How could I solve this problem? > thanks > Silvia
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