Hi Ed, Before drawing your plot, do pResidual->SetEntries(1); Your histogram has 0 entries. When drawing TH2 in non-3D mode, we immediatly return without looping on all the cell contents. This is an important gain in time for applications using a 2-d histogram to set the frame. Rene Brun Ed Oltman wrote: > > Hello, > I have recently converted a root based applicationfrom 3.03/9a to > 3.05/4 on Win2K. The output is a bunch of objects written to a > root file. One is a TH2D object containing fit residuals of both > signs. I used to be able to Draw("colz") it, but now I can't > draw it any way except as lego plots. I've included the TH2D object > Please advise. Thanks. > > Ed Oltman > > -------------------------------------------------------------------------------- > Name: example.root > example.root Type: unspecified type (application/octet-stream) > Encoding: base64
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