RE: strange behaviour of P0 drawing option of TGraph2D

From: Olivier Couet <Olivier.Couet_at_cern.ch>
Date: Thu, 17 Dec 2009 16:22:57 +0100

Yes, something has obviously been fixed since v5.20. (We just released 5.26).
Do you need to know when it was fix of, knowing it is now fixed is enough for you ?
Cheers,
Olivier

-----Original Message-----
From: Alexander Mann [mailto:amann_at_uni-goettingen.de] Sent: Thursday, December 17, 2009 4:19 PM To: Olivier Couet
Subject: Re: [ROOT] strange behaviour of P0 drawing option of TGraph2D

Sorry for the delay in my reply.

No, I don't get the same plots, see attachment.

Your plots look OK though. So this is fixed in some later result? v5.20 is probably out-dated somehow...

cu,
Alexander

Olivier Couet schrieb:
> I looked more closely at the images generated by your macro using the
> latest root version. And seems to me it is ok. Look at the highest
> point its position is near 3000 in both plots...
> do you obtain the same plots as me ?
>
>
>
> On Thu, 17 Dec 2009, Alexander Mann wrote:
>

>> 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
>>

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Received on Thu Dec 17 2009 - 16:23:01 CET