read_observations¶
- rubin_sim.moving_objects.read_observations(simfile, colmap, constraint=None, footprint='camera', dbcols=None)¶
Read the opsim database.
- Parameters:
- simfile
str Name (& path) of the opsim database file.
- colmap
dict colmap dictionary (from rubin_sim.maf.batches.ColMapDict)
- constraint
str, optional Optional SQL constraint (minus ‘where’) on the opsim data to read from db. Default is None.
- footprint
str, optional Footprint option for the final matching of object against OpSim FOV. Default ‘camera’ means that ‘rotSkyPos’ must be fetched from the db. Any other value will not require rotSkyPos.
- dbcols
listofstr, optional List of additional columns to query from the db and add to the output observations. Default None.
- simfile
- Returns:
- np.ndarray, dictionary
The OpSim data read from the database, and the dictionary mapping the column names to the data.