Difference between revisions of "DSelector"
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= Creating a DSelector = | = Creating a DSelector = | ||
− | + | # Run the MakeDSelector program to make a DSelector for your TTree. Run it with no arguments for usage instructions. | |
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+ | # Declare your histograms and/or histogram actions in the class definition (header file). | ||
+ | |||
+ | # Cre | ||
= Using a DSelector = | = Using a DSelector = |
Revision as of 11:27, 7 April 2016
Contents
Overview
- Inherits from TSelector: Can be used with TTree::Process(), PROOF.
Improvements over TSelectors
Setting up the software & environment
1) Go to the directory where you want the source code to go. Checkout the software here:
svn co https://halldsvn.jlab.org/repos/trunk/home/pmatt/RootAnalysis/
2) Set the path to the checked-out RootAnalysis directory to be the variable:
$ROOT_ANALYSIS_HOME
3) After sourcing your standard GlueX environment file, set the following environment variables:
setenv OS_NAME $BMS_OSNAME setenv LD_LIBRARY_PATH ${ROOT_ANALYSIS_HOME}/${OS_NAME}/lib/:$LD_LIBRARY_PATH setenv PATH ${ROOT_ANALYSIS_HOME}/${OS_NAME}/bin/:$PATH
4) Build and install the DSelector library
cd $ROOT_ANALYSIS_HOME/DSelector make all
5) Build and install the MakeDSelector binary
cd $ROOT_ANALYSIS_HOME/MakeDSelector make all
Creating a DSelector
- Run the MakeDSelector program to make a DSelector for your TTree. Run it with no arguments for usage instructions.
- Declare your histograms and/or histogram actions in the class definition (header file).
- Cre
Using a DSelector
root -l -b my_tree_file.root .x $ROOT_ANALYSIS_HOME/Load_DSelector.C my_tree_name->Process("my_selector.C+"); .q
Using DSelector's with PROOF-Lite
1) After each time the DSelector library is built, (re-)build the PROOF DSelector package:
cd $ROOT_ANALYSIS_HOME/MakePROOFPackage/ ./build.sh
2) Launch ROOT, and load the DSelector library:
root -l my_tree_file.root .x $ROOT_ANALYSIS_HOME/Load_DSelector.C
3) Run PROOF-Lite:
DPROOFLiteManager::Process_Tree("my_tree_file.root", "my_tree_name", "my_selector.C+", "my_outfile.root", my_num_threads); //my_num_threads = unsigned int