Re: no dictionary for class TPaletteAxis is available

From: Marc Escalier <escalier_at_lal.in2p3.fr>
Date: Tue, 3 Aug 2010 15:41:48 +0200


Hi,

it was discussed some time ago here :
(thanks to Henso who reads this hypernews to have found the link and explanation)

http://root.cern.ch/phpBB3//viewtopic.php?t=6947&view=next&sid=cd602857c8522df6ac8123ae9f29ebfd

to summarize, it would be due to the version of root that you use (below 5.20 in cint)

==>if you create a dummy canvas before your loop, the warning should disappear
TCanvas *mydummycanvas=new TCanvas();

regards




Harinder Singh Bawa a écrit :
> Dear root experts,
>
> I am getting this strange error when I call the Object Quality mapfile
> in my analysis. Although it doesnot effect or crash my analysis but I
> want to get rid of it. Can anybody suggest what is this for??
> *********************************
> checkOQ: opening file ObjectQualityMaps_run152166.root
> Warning in <TClass::TClass>: no dictionary for class TPaletteAxis is
> available
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> Error in <TBufferFile::ReadObject>: trying to read an emulated class
> (TPaletteAxis) to store in a compiled pointer (TObject)
> ***********************
>
> Harinder
Received on Tue Aug 03 2010 - 15:47:31 CEST

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