Roosh problems with user-defined data-types

[Joseph McCartin]

Hi, 

I'm new to rootpy, and I wanted to get started by making a simple histogram from an ntuple I need for my analysis.  I like the idea of using something like roosh to browse the available directories inside a file (it helps me get the naming right later in in a plotting script), but I'm having trouble doing this with the data-type that I have to work with.  I can get the libraries to load fine, but I am unable to browse inside each tree, or even list their contents.

I've pasted the output I get when I try and list the directories here: http://pastebin.com/s1QiFtDt  And I link the libraries and root files I use below:

http://mon.iihe.ac.be/~mccartin/madweight/generation/JES100/172_5_smeared_JES1.00.root

http://mon.iihe.ac.be/~mccartin/madweight/generation/JES100/libanalysersLHCOInterface_plugins.so

Can anyone say if I'm doing something obviously wrong here?  I'm not new to root, but I'll freely admit that I'm not 100% familiar with how dictionaries work.  I should add that the root version I use to generate files with is 5.32.00, and this is the same environment that I use to view them.

Cheers,

Joseph

[Noel Dawe]

Hi Joseph,

It seems "tree" is actually a TTree and not a directory:

23:21|neutrino:0/3 ~> roosh 172_5_smeared_JES1.00.root

WARNING:ROOT.TClass.TClass] no dictionary for class beag::MET is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::Particle is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::Electron is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::Lepton is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::Muon is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::Jet is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::Trigger is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::Conversion is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::EventInformation is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::PrimaryVertex is available

WARNING:ROOT.TClass.TClass] no dictionary for class beag::TTbarGenEvent is available

Welcome to the ROOSH terminal

type help for help

172_5_smea..S1.00.root > ls

tag_name_mapping  tree  trigger_name_mapping

172_5_smea..S1.00.root > load tree

172_5_smea..S1.00.root > tree

Tree('tree')

172_5_smea..S1.00.root >

If you have termcolor installed trees should be green in your terminal.

Cheers,

Noel

[Joseph McCartin]

Hi,

Thanks for clearing this up.  I was just following the only example I could find on the rootpy.org documentation and couldn't see much about loading trees there.  Either way, I use green on black terminal text, so it's no surprise that I didn't see it show up differently :)

Cheers,

Joseph

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[Noel Dawe]

Hi Joseph,

Documentation for the command-line tools is something we are currently lacking. Hopefully coming soon! Help is also welcome :)

roosh does have some built-in help with the "help" command:

172_5_smea..S1.00.root > help

Documented commands (type help <topic>):

========================================

EOF  canvas  cd  env  exit  help  load  ls  pwd  python  roosh  shell

Undocumented commands:

======================

mkdir

172_5_smea..S1.00.root > help load

load the specified object into the current namespace

TTrees are not loaded automatically when cd'ing into a directory

Use this command to load TTrees or other objects not in current directory

Use 'load foo as bar' to alias the object named foo as bar

Cheers,

Noel

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Skype: noel.dawe