belaa / imsim

GalSim based LSST simulation package

imSim

GalSim based LSST simulation package

Set up

Set up the lsst_sims distribution, then enter the following from this repo directory:

$ eups declare -r . imsim -t current
$ setup imsim
$ scons

Once you have eups declared a package like this, you only need to execute the setup imsim command, and that command can be issued from any directory. The scons build step needs only to be re-run if a new command line executable is added to the bin.src folder.

Usage

The executables in the bin folder should be in your path and so should be runnable directly from the command line:

$ imsim.py --help
usage: imsim.py [-h] [-n NUMROWS] [--outdir OUTDIR] [--sensor SENSOR]
                [--config_file CONFIG_FILE]
                [--log_level {DEBUG,INFO,WARN,ERROR,CRITICAL}]
                file

positional arguments:
  file                  The instance catalog

optional arguments:
  -h, --help            show this help message and exit
  -n NUMROWS, --numrows NUMROWS
                        Read the first numrows of the file.
  --outdir OUTDIR       Output directory for eimage file
  --sensor SENSOR       Sensor to simulate, e.g., "R:2,2 S:1,1". If None, then
                        simulate all sensors with sources on them
  --config_file CONFIG_FILE
                        Config file. If None, the default config will be used.
  --log_level {DEBUG,INFO,WARN,ERROR,CRITICAL}
                        Logging level. Default: "INFO"

Similarly, by doing setup imsim, the PYTHONPATH environment variable has been modified so that the desc.imsim module is available:

>>> import desc.imsim
>>>