What is
Error in TTreeFormula::Compile: Too many operators !
how to solve it?
[quote=“wiso”]What is
Error in TTreeFormula::Compile: Too many operators !
how to solve it?[/quote]
What are you doing when you get the answer. (In other words, post as short as possible but complete example of how you are getting this error).
Cheers,
Charles
[quote=“cplager”][quote=“wiso”]What is
Error in TTreeFormula::Compile: Too many operators !
how to solve it?[/quote]
What are you doing when you get the answer. (In other words, post as short as possible but complete example of how you are getting this error).
Cheers,
Charles[/quote]
I’m creating TEntryList from TCut
TTree::Draw(">>myentrylist",TCut,“entrylist”)
where TCut is a very long concatenation of conditions with &&.
[quote]where TCut is a very long concatenation of conditions with &&.
…
Error in TTreeFormula::Compile: Too many operators ! [/quote]You reach a hard coded limit (necessary for performance reasons) in TTreeFormula. You will need to use a TSelector, either created by MakeProxy or MakeSelector in order to process your use case.
Cheers,
Philippe.
It’s not hard coded.
you can change the limits with TFormular::SetMaxima since root 5.18.00
root.cern.ch/root/html522/TFormu … :SetMaxima
Dear ROOT developers,
I am experiencing this error now with ROOT 6.06/01.
And it seems that the SetMaxima function is not available anymore in the new implementation of TFormula.
I am experiencing this while doing a “Draw” of a TTree.
Do you have any suggestion?
Best regards,
Andrea
Hi Andrea,
In v6, you can use ROOT::v5::TFormula::SetMaxima instead to steer TTreeFormula.
Cheers,
Philippe.
Hi, I’m seeing errors though in ROOT6.06 as well:
(Pdb) ROOT.v5.TFormula.SetMaxima(300)
(Pdb) form = ROOT.TTreeFormula("test", run_filter, in_t)
Error in <TTreeFormula::Compile>: Too many operators !
where I’m trying to extract a subset of a tree, but the CopyTree call is complaining about this, so it was suggested to use a TTreeFormula instead, but this also complains and then crashes.
How many operands is there in your filter?