Good morning,
I created a TTree with one branch containing a std::vector.
this branch is called “channels” and contain strings like “jjjj”.
I can write it fine, and looking at this branch with TBrowser, I found the methods to read it content, like in:
or
SUSYTree->Scan("jetPt:channels.data()","jetPt>100")
***********************************************
* Row * Instance * jetPt * channels. *
***********************************************
* 0 * 0 * 305.10269 * jjjj *
* 1 * 0 * 314.94259 * jjjj *
* 2 * 0 * 327.89904 * jjjj *
* 3 * 0 * 160.29873 * jjjj *
***********************************************
==> 4 selected entries
(Long64_t)4But I get an error when I try to cut on this string value, like this:
SUSYTree->Scan("jetPt:channels.data()", "channels.data() == jjjj" )
Error in <TTreeFormula::Compile>: Bad numerical expression : "jjjj"
Error in <TTreeFormula::Compile>: Both operands of the operator == have to be either numbers or strings
(Long64_t)(-1)May you help me?
Thanks a lot,
and have a nice day!
Ric.
[/code]
Sorry, I forgot to mention that I’m using ROOT 5.18 (ATLAS Athena)
Thanks,
Ric.
pcanal
November 13, 2008, 4:15pm
3
Hi,
This has been fixed in the head of the svn trunk (revision 26117) and will be part of the 5.21/06 release.
Cheers,
Sorry for bothering you again with this.
I downloaded and compiled the head version, but I still cannot cut on branches containing std::vector< std::strings> (as I described above):
ROOT 5.21/05 (trunk@26187, Nov 14 2008, 11:39:28 on linux)root [2] SUSYTree->Scan("jetPt:channels.data()")
***********************************************
* Row * Instance * jetPt * channels. *
***********************************************
* 0 * 0 * 305.10269 * jjjj *
* 0 * 1 * 158.11608 * *
* 0 * 2 * 140.56155 * *
* 0 * 3 * 74.01828 * *
* 1 * 0 * 314.94259 * jj *
* 1 * 1 * 213.57994 * jjjj *
* 1 * 2 * 123.22430 * *
* 1 * 3 * 57.146205 * *
* 1 * 4 * 25.615610 * *
* 2 * 0 * 327.89904 * jj *
* 2 * 1 * 249.17918 * jjjj *
* 2 * 2 * 144.92178 * *
* 2 * 3 * 51.341476 * *
* 2 * 4 * 49.671630 * *
* 2 * 5 * 42.564464 * *
* 2 * 6 * 23.709358 * *
* 3 * 0 * 160.29873 * jjjj *
* 3 * 1 * 122.61026 * *
* 3 * 2 * 112.81999 * *
* 3 * 3 * 86.671241 * *
* 3 * 4 * 27.753007 * *
***********************************************
(Long64_t)21
root [3] SUSYTree->Scan("jetPt:channels.data()","jetPt>100")
***********************************************
* Row * Instance * jetPt * channels. *
***********************************************
* 0 * 0 * 305.10269 * jjjj *
* 1 * 0 * 314.94259 * jj *
* 1 * 1 * 213.57994 * jjjj *
* 2 * 0 * 327.89904 * jj *
* 2 * 1 * 249.17918 * jjjj *
* 3 * 0 * 160.29873 * jjjj *
***********************************************
==> 6 selected entries
(Long64_t)6
root [4] SUSYTree->Scan("jetPt:channels.data()","channels.data() == jjjj")
Error in <TTreeFormula::Compile>: Bad numerical expression : "jjjj"Many thanks for your help,
Ric.
pcanal
November 17, 2008, 11:09pm
6
Hi,
TrySUSYTree->Scan("jetPt:channels")SUSYTree->Scan("jetPt:channels","channels == jjjj");
Cheers,
Good morning Philippe,
and thanks a lot for your help.
I tried as you suggested, but I still get errors, unfortunately:
root [4] SUSYTree->Scan("jetPt:channels","jetPt>100")
***********************************************
* Row * Instance * jetPt * channels *
***********************************************
* 0 * 0 * 305.10269 * jjjj *
* 0 * 1 * 158.11608 * jjj *
* 1 * 0 * 262.49447 * jjj *
* 2 * 0 * 314.94259 * jjjj *
* 2 * 1 * 213.57994 * jj *
* 2 * 2 * 123.22430 * jjj *
* 3 * 0 * 327.89904 * jjjj *
* 3 * 1 * 249.17918 * jj *
* 3 * 2 * 144.92178 * jjj *
* 4 * 0 * 672.52795 * jjj *
* 5 * 0 * 160.29873 * jjjj *
* 5 * 1 * 122.61026 * jjj *
***********************************************
==> 12 selected entries
(Long64_t)12
root [5] SUSYTree->Scan("jetPt:channels","channels == jjjj");
Error in <TTreeFormula::Compile>: Bad numerical expression : "jjjj"I’m using the revision: trunk@26187
Thanks again,
Ric.
benloer
November 18, 2008, 3:39pm
8
I can usually get this to work (with TStrings, haven’t tried std::strings) by escaping the quotes:
root [5] SUSYTree->Scan("jetPt:channels","channels == \"jjjj\"");or
root [5] SUSYTree->Scan("jetPt:channels","channels.data() == \"jjjj\"");HTH,
Hi Ben,
thanks a lot! Escaping the quotes works fine, even with std::strings
and both with “.data()” or not.
root [3] SUSYTree->Scan("jetPt:channels","channels.data() == \"jjjj\"");
***********************************************
* Row * Instance * jetPt * channels *
***********************************************
* 0 * 0 * 305.10269 * jjjj *
* 2 * 0 * 314.94259 * jjjj *
* 3 * 0 * 327.89904 * jjjj *
* 5 * 0 * 160.29873 * jjjj *
***********************************************
==> 4 selected entries
root [4] SUSYTree->Scan("jetPt:channels","channels == \"jj\"");
***********************************************
* Row * Instance * jetPt * channels *
***********************************************
* 2 * 1 * 213.57994 * jj *
* 3 * 1 * 249.17918 * jj *
***********************************************
==> 2 selected entriesThanks a lot again
Ric.
