Why this works in ROOT 5:
import ROOT
tree = ROOT.TTreee()
tree.Branch("a", 0)
while in ROOT 6 I get
TypeError: can not resolve method template call for ''
I also tried
tree.Branch("float")("a", 0)
but still same answer
Why this works in ROOT 5:
import ROOT
tree = ROOT.TTreee()
tree.Branch("a", 0)
while in ROOT 6 I get
TypeError: can not resolve method template call for ''
I also tried
tree.Branch("float")("a", 0)
but still same answer
Hi,
sorry, I’m still sitting on this one (had to make some fixes for the doc string of TTree::Branch first).
Later,
Wim
Hi,
that was subtle. The problematic code is present in both 5 and 6, but a different path is taken through 5. Looks like the behavior is the same now …
Thanks for digging this up.
Cheers,
Wim
Hi @wlav sorry for jumping in. Was this fixed in any recent root release? I think I am observing exactly the same problem with ROOT version 6-20-02.
Thanks
Nicola
OK, for the record I solved this following some other online posts in this way
input_file = R.TFile.Open(input_filename,'update')
input_tree = input_file.Get(tree_name)
rew_func = array('d',[0])
branch_new_func = input_tree.Branch('branch_rew_func',rew_func, 'branch_rew_func/D')
tot_entries = float(input_tree.GetEntries())
index = 0
for event in input_tree :
rew_func[0] = some_value
branch_new_func.Fill()
if index > tot_entries:
break
index ++
input_file.Write()
input_file.Close()