Before Starting CASA

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1.3.1 Before Starting CASA

First, you will most likely be starting CASA running from a working directory that has your data in it, or at least where you want your output to go. It is easiest to start from there rather than changing directories inside casapy. ALERT: There is at least one task (plotxy) that fails if the path to your working directory contains spaces in its name, e.g. /users/smyers/MyTest/ is fine, but /users/smyers/My Test/ is not! Please use our new task plotms whenever possible and we may work on a better handling of spaces in path names.

If you have done a default installation under Linux using rpms, or on the Mac with the CASA application, then there should be a sh script called casapy in the /usr/bin area which is in your path. This shell will set up its environment and run the version of casapy that it points to. If this is how you set up the system, then you need to nothing further and can run casapy.

For internal NRAO users we keep different version of CASA, the latest “casapy” release, the “casapy-stable” “Stable” version that is more developed than the Release but without the full documentation (and no GUI testing). We also offer the “Test” version, “casapy-test”, which is produced on a roughly weekly basis with all the latest code but it underwent much less rigorous testing. Instructions how to run the different versions at NRAO can be found on our http://casa.nrao.edu webpages under the “CASA at NRAO” link for the different NRAO sites.

1.3.1.1 Environment Variables
1.3.1.2 Where is CASA?

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