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NRAO Home > CASA > CASA Cookbook and User Reference Manual |
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6.4 Image-plane Component Fitting (imfit)
The inputs are:
imagename = ’’ # Name of the input image
box = ’’ # Specify one or more box regions for the fit.
region = ’’ # Region. See help par.region for specs.
chans = ’’ # Spectral channels on which to perform fit.
stokes = ’’ # Stokes parameter to fit. If blank, first stokes plane is used.
mask = ’’ # Mask to use. See help par.mask. Default is none.
includepix = [] # Range of pixel values to include for fitting.
excludepix = [] # Range of pixel values to exclude for fitting.
residual = ’’ # Name of output residual image.
model = ’’ # Name of output model image.
estimates = ’’ # Name of file containing initial estimates of component parameters.
logfile = ’’ # Name of file to write fit results.
newestimates = ’’ # File to write fit results which can be used as initial estimates for next run.
complist = ’’ # Name of output component list table.
dooff = False # Also fit a zero level offset? Default is False
async = False # If true the taskname must be started using imfit(...)
This task will return (as a Python dictionary) the results of the fit, but the results can also be written into a component list table or a logfile.
Note that to fit more than a single component, you must provide starting estimates for each component via the estimates file. See ‘‘help imfit’’ for more details on this.
More information about CASA may be found at the
CASA web page
Copyright © 2010 Associated Universities Inc., Washington, D.C.
This code is available under the terms of the GNU General Public Lincense
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