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NRAO Home > CASA > CASA Task Reference Manual |
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0.1.89 predictcomp
Requires:
Synopsis
Make a component list for a known calibrator
Description
Writes a component list named clist to disk and returns a dict of ’clist’: clist,
’objname’: objname, ’standard’: standard, ’epoch’: epoch, ’freqs’: pl.array of
frequencies, in GHz, ’antennalist’: a simdata type configuration file, ’amps’:
pl.array of predicted visibility amplitudes, in Jy, ’savedfig’: False or, if made,
the filename of a plot. or False on error.
Arguments
Inputs |
| ||
objname |
| Object name
| |
| allowed: | string |
|
| Default: |
| |
standard |
| Flux density standard
| |
| allowed: | string |
|
| Default: | Butler-JPL-Horizons 2010 | |
epoch |
| Epoch
| |
| allowed: | string |
|
| Default: |
| |
minfreq |
| Minimum frequency
| |
| allowed: | string |
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| Default: |
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maxfreq |
| Maximum frequency
| |
| allowed: | string |
|
| Default: |
| |
nfreqs |
| Number of frequencies
| |
| allowed: | int | |
| Default: | 2 |
|
prefix |
| Prefix for the component list directory name.
| |
| allowed: | string |
|
| Default: |
| |
antennalist |
| Plot for this configuration
| |
| allowed: | string |
|
| Default: |
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showplot |
| Plot S vs —u— to the screen?
| |
| allowed: | bool |
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| Default: | False |
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savefig |
| Save a plot of S vs —u— to this filename
| |
| allowed: | string |
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| Default: |
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symb |
| A matplotlib plot symbol code
| |
| allowed: | string |
|
| Default: | . |
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include0amp |
| Force the amplitude axis to start at 0?
| |
| allowed: | bool |
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| Default: | False |
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include0bl |
| Force the baseline axis to start at 0?
| |
| allowed: | bool |
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| Default: | False |
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blunit |
| unit of the baseline axis
| |
| allowed: | string |
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| Default: |
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showbl0flux |
| Print the zero baseline flux ?
| |
| allowed: | bool |
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| Default: | False |
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record
Example
Writes a component list to disk and returns a dict of
{’clist’: filename of the component list,
’objname’: objname,
’angdiam’: angular diameter in radians (if used in clist),
’standard’: standard,
’epoch’: epoch,
’freqs’: pl.array of frequencies, in GHz,
’antennalist’: pl.array of baseline lengths, in m,
’amps’: pl.array of predicted visibility amplitudes, in Jy,
’savedfig’: False or, if made, the filename of a plot.}
or False on error.
objname: An object supported by standard.
standard: A standard for calculating flux densities, as in setjy.
Default: ’Butler-JPL-Horizons 2010’
epoch: The epoch to use for the calculations. Irrelevant for
extrasolar standards. (Uses UTC)
Examples: ’2011-12-31/5:34:12’, ’2011-12-31-5:34:12’
minfreq: The minimum frequency to use.
Example: ’342.0GHz’
maxfreq: The maximum frequency to use.
Default: minfreq
Example: ’346.0GHz’
Example: ’’, anything <= 0, or None: use minfreq.
nfreqs: The number of frequencies to use.
Default: 1 if minfreq == maxfreq,
2 otherwise.
prefix: The component list will be saved to
prefix + ’spw0_<objname>_<minfreq><epoch>.cl’
Default: ’’
Example: "Bands3to7_"
(which could produce ’Bands3to7_spw0_Uranus_100GHz55877d.cl’,
depending on the other parameters)
antennalist: ’Observe’ and plot the visibility amplitudes for this
antenna configuration. The file should be in a format usable
by simdata. The search path is:
.:casa[’dirs’][’data’] + ’/alma/simmos/’
Default: ’’ (None, just make clist.)
Example: ’alma.cycle0.extended.cfg’
Subparameters of antennalist:
showplot: Whether or not to show a plot of S vs. |u| on screen.
Subparameter of antennalist.
Default: Necessarily False if antennalist is not specified.
True otherwise.
savefig: Filename for saving a plot of S vs. |u|.
Subparameter of antennalist.
Default: False (necessarily if antennalist is not specified)
Examples: ’’ (do not save the plot)
’myplot.png’ (save to myplot.png)
symb: One of matplotlib’s codes for plot symbols: .:,o^v<>s+xDd234hH|_
Default: ’.’
include0amp: Force the amplitude axis to start at 0?
Default: False
include0bl: Force the baseline axis to start at 0?
Default: False
blunit: unit of the baseline axis (’’ or ’klambda’)
Default:’’=use a unit in the data
showbl0flux: Print the zero baseline flux?
Default: False
More information about CASA may be found at the
CASA web page
Copyright © 2016 Associated Universities Inc., Washington, D.C.
This code is available under the terms of the GNU General Public Lincense
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