Executing a pipeline or pipeline step via call()ΒΆ

The call method will create an instance and run a pipeline or pipeline step in a single call.

from jwst.pipeline import Detector1Pipeline
result = Detector1Pipeline.call('jw00017001001_01101_00001_nrca1_uncal.fits')

from jwst.linearity import LinearityStep
result = LinearityStep.call('jw00001001001_01101_00001_mirimage_uncal.fits')

To set custom parameter values when using the call method, set the parameters in the pipeline or step configuration file and then supply the file using the config_file keyword:

# Calling a pipeline
result = Detector1Pipeline.call('jw00017001001_01101_00001_nrca1_uncal.fits', config_file='calwebb_detector1.cfg')

# Calling a step
result = LinearityStep.call('jw00017001001_01101_00001_nrca1_uncal.fits', config_file='linearity.cfg')

When running a pipeline, parameter values can also be supplied in the call to call itself by using a nested dictionary of step and parameter names:

result = Detector1Pipeline.call("jw00017001001_01101_00001_nrca1_uncal.fits", config_file='calwebb_detector1.cfg', steps={"jump":{"rejection_threshold": 200}})

When running a single step with call, parameter values can be supplied more simply:

result = JumpStep.call("jw00017001001_01101_00001_nrca1_uncal.fits", rejection_threshold=200)