Re: [ROOT] Event handling or graphing huge datasets

From: Eddy Offermann (eddy@rentec.com)
Date: Tue Feb 26 2002 - 18:46:57 MET


Hi Tony,

Take a look at "void TGraph::PaintGrapHist" and scan for "lowRes".
You will see around line 2350 that if you draw the graph with option L or P,
The number of data points is checked versus your screen resolution.
In case of many data points it will not draw every point but just calculate the
average pixel position. 10^7 should not be a problem


Eddy A.J.M. Offermann
Renaissance Technologies Corp.
Route 25A, East Setauket NY 11733
e-mail: eddy@rentec.com
http://www.rentec.com



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