My 5 cents. > I was mistaken... I was accidently testing with 10^6 points and not 10^7 > points. That extra order of magnitude causes a crash in ROOT with the > following message: > > *** BREAK *** write on a pipe with no one to read it > Error in <RootX11IOErrorHandler>: fatal X11 error (connection to server > lost?) > *** Save data and exit application *** Please see my earlier mail : http://root.cern.ch/root/roottalk/roottalk02/0561.html I also observed a root crash as soon as more then about 1e7 events were used in "SetEstimate". No solution has been offered / found. The visual effect was that the "Draw" command exited giving the proper number of events (4390625), the canvas was drawn with correct axises (both x- and y-axis limits were o.k.), but no points were drawn and a moment later the canvas was closed and I got the error that you saw. I suspected that there was somewhere a "float" instead of a "double", so that "1e7" is the same as "1e7 + 1". Best regards, Jacek.
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