Hi Ed,
I am aware of this minor problem. You have drawn your TH2 pXy with
a color palette and then saved it to a file.
TPaletteAxis is in the shared lib libHistPainter. This library is not
loaded by default). It is automatically loaded when you paint
an histogram.
In your case, do the following:
root > gSystem->Load("libHistpainter")
root > TFile f("example.root")
root > pXy.Draw()
Rene Brun
On
Thu,
6 Mar 2003, Ed Oltman wrote:
> Hello,
>
> I have recently converted a root based application from 3.02/9a to 3.05/2 on
> Win2k.
> The output is a bunch of objects written to a root file. One of the objects
> contains
> a TH2F which causes the error message seen below: I have extracted this
> TH2F and
> written it to the attached example.root file.
>
> When I read the file, I get the following warnings and error:
>
> root [0] TFile *f = new TFile("example.root")
> Warning in <TClass::TClass>: no dictionary for class TPaletteAxis is
> available
> root [1] TH2F *pXy=(TH2F *)f->Get("pXy")
> Error in <TBuffer::CheckByteCount>: object of class TPaletteAxis read too
> few bytes: 17 instead of 311
> Warning in <TBuffer::CheckByteCount>: TPaletteAxis::Streamer() not in sync
> with data on file, fix Streamer()
> root [2]
>
>
> I have tried to generate a TH2F using using a simple script that would
> present the same problem,
> but have not been able to. Is there anything in the file that might suggest
> a problem with
> how my application creates or saves the hitogram?
>
> Note: I do not get the above warnings or error when my application that
> generates them is
> linked against 3.02/9a.
>
> Thanks,
> Ed Oltman
>
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