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1 - Setting the environment variables to use a specific software package
The software to analyze GLAST data is pretty complex. It involves several (similar) release packages (BeamtestRelease, EngineeringModel, GlastRelease and ScienceTools) and many different
release versions. In order to add more complexity to the issue, different release packages run with different root versions, and different programs might be running with different shell flavours. That implies that one needs to be careful when changing software package; the chances of working with a not properly set package (i.e. wrong libraries) are not negligible.
In this section you can find a set of very simple scripts and a even more simple root macro that help setting the environment variables in rather easy and systematic way.
1.1 - Scripts to set some environment variables
The script .SetSoftRelease (.SetSoftRelease_bash for bash or sh shell) sets the environement variables CMTCONFIG (to "rh9_gcc32opt"), GLAST_EXT (to "/afs/slac/g/glast/ground/GLAST_EXT/$CMTCONFIG") and the variable CMTPATH. The first 2 point to the directory where all the software packages hang, therefore they DO NOT need to be replaced. On the other hand, the variable CMTPATH points to the specific software package to be used, and consequently it needs to be modified every time you want to change software package or release. Because of that, the script has 2 arguments:
- Software package; _BeamtestRelease, EngineeringModel... _
- Release version: v3r0907p2, v6r070329p17 ...
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- The above mentioined scripts use the script .SetSoftRelease, and they all assume that this script is located in the $HOME directory. Therefore, if you want to place .SetSoftRelease in any other place, you have to change the scripts accordingly...
- I do have csh and sh scripts because, even though I particularly use csh, FRED wants to use bash (see section 3), and therefore I need both. I do not know whether this applies to you... but that might be useful.
1.2 - Root macro to load root libraries
2 - Useful macro to select the events you want to display with FRED
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