Hi all,
I have some trouble with the "colz" option of the TTree::Draw method.
I do "gStyle->SetPalette(1)" and then I try to plot one paramater
against another one, projecting into an TH2F and using the "colz" option
(ie : t->Draw("p1:p2>>myhist2d","","colz")). A canvas is created, the
histo is plotted, but with nothing inside, and the colour scale on the
right side looks strange, with only a few colours separated by white areas.
If I do not specify any Draw option, evrything goes right. This I get
using the pro version (3.00/06).
With the new version (3.02/07), I have another problem. With the same
Draw command as above, I get :
root [2] ntu->Draw("(ey+esili):tetap>>hc","nocats==0 && nox2==0","colz")
<TCanvas::MakeDefCanvas>: created default TCanvas with name c1
(Int_t)3099
Error in <RootX11ErrorHandler>: BadAccess (attempt to access private
resource de
nied) (XID: 0)
Error in <RootX11ErrorHandler>: BadAlloc (insufficient resources for
operation)
(XID: 0)
Can anybody help me ?
Thanks,
Franck
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