RE: strange behaviour of P0 drawing option of TGraph2D

From: Olivier Couet <Olivier.Couet_at_cern.ch>
Date: Thu, 17 Dec 2009 15:11:30 +0100


Hello,
I'll check you macro. I think I am working on something similar right now.
I'll let you know.
Olivier

-----Original Message-----
From: owner-roottalk_at_root.cern.ch [mailto:owner-roottalk_at_root.cern.ch] On Behalf Of Alexander Mann
Sent: Thursday, December 17, 2009 3:09 PM To: roottalk_at_root.cern.ch
Subject: [ROOT] strange behaviour of P0 drawing option of TGraph2D

Hello,

I found a strange behaviour of the "P0" option when plotting TGraph2d (v5.20). If you execute the macro in the attachment once with "surf1" as draw option in line 85 and once with "tri1", and then compare the resulting drawings, you'll find that the small white circles indicating the data points are at the same position for both graphs, whereas the grid and the tics of the axes change. I.e. the value read off for the markers changes although it should be the same in both cases as the data is the same.

Is this a bug in the visualisation or do I misinterpret the meaning of the markers?

Best regards,
Alexander Received on Thu Dec 17 2009 - 15:11:35 CET

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