Hi,
I’m trying to read a root file generated by python. The file can be open and draw successfully, but when it comes to a c-program it always gives the following error:
0x00000000004138ba in std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::operator[] (this=0x445dbf024395b7ec, __n=0) at /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/stl_vector.h:611
0x000000000040862d in AnalysisSort::Loop (this=0x7ffcb9c84010, FlagSave=2, FlagNrModel=1) at Analysis.C:74
0x0000000000406138 in main (argc=5, argv=0x7ffcb9c95bd8) at xx.C:68
It seems that it cannot recognize the branch I defined.
Here’s how I defined branch in python
type = std.vector('string')()
#newtree.Branch('type', type, 'type[ntype]/C')
newtree._type = type
newtree.Branch('type', type)
for entry in range(nb_entries):
tree.GetEntry(entry)
tree_type = list(tree.type)
type.clear()
for t in tree_type:
type.push_back(t)
newtree.Fill()
Do you know how can I define the branch so that it can be read by a c program?