Source code for casatasks.manipulation.mstransform
#
# stub function definition file for docstring parsing
#
[docs]def mstransform(vis, outputvis='', createmms=False, separationaxis='auto', numsubms='auto', tileshape=[0], field='', spw='', scan='', antenna='', correlation='', timerange='', intent='', array='', uvrange='', observation='', feed='', datacolumn='corrected', realmodelcol=False, keepflags=True, usewtspectrum=False, combinespws=False, chanaverage=False, chanbin=1, hanning=False, regridms=False, mode='channel', nchan=-1, start='0', width='1', nspw=1, interpolation='linear', phasecenter='', restfreq='', outframe='', veltype='radio', preaverage=False, timeaverage=False, timebin='0s', timespan='', maxuvwdistance=0.0, docallib=False, callib='', douvcontsub=False, fitspw='', fitorder=0, want_cont=False, denoising_lib=True, nthreads=1, niter=1, disableparallel=False, ddistart=-1, taql='', monolithic_processing=False, reindex=True):
r"""
Split the MS, combine/separate/regrid spws and do channel and time averaging
[`Description`_] [`Examples`_] [`Development`_] [`Details`_]
Parameters
- vis_ (path) - Name of input Measurement set or Multi-MS.
- outputvis_ (string='') - Name of output Measurement Set or Multi-MS.
- createmms_ (bool=False) - Create a multi-MS output from an input MS.
.. raw:: html
<details><summary><i> createmms = False </i></summary>
- separationaxis_ (string='auto') - Axis to do parallelization across(scan,spw,auto,baseline).
- numsubms_ ({string, int}='auto') - The number of Sub-MSs to create (auto or any number)
- disableparallel_ (bool=False) - Hidden parameter for internal use only. Do not change it!
- ddistart_ (int=-1) - Hidden parameter for internal use only. Do not change it!
- taql_ (string='') - Table query for nested selections
- reindex_ (bool=True) - Hidden parameter for use in the pipeline context only
.. raw:: html
</details>
.. raw:: html
<details><summary><i> createmms = True </i></summary>
- separationaxis_ (string='auto') - Axis to do parallelization across(scan,spw,auto,baseline).
- numsubms_ ({string, int}='auto') - The number of Sub-MSs to create (auto or any number)
- disableparallel_ (bool=False) - Hidden parameter for internal use only. Do not change it!
- ddistart_ (int=-1) - Hidden parameter for internal use only. Do not change it!
- taql_ (string='') - Table query for nested selections
- reindex_ (bool=True) - Hidden parameter for use in the pipeline context only
.. raw:: html
</details>
- tileshape_ (intVec=[0]) - List with 1 or 3 elements giving the tile shape of the disk data columns.
- field_ ({string, stringVec, int, intVec}='') - Select field using ID(s) or name(s).
- spw_ ({string, stringVec, int, intVec}='') - Select spectral window/channels.
- scan_ ({string, stringVec, int, intVec}='') - Select data by scan numbers.
- antenna_ ({string, stringVec, int, intVec}='') - Select data based on antenna/baseline.
- correlation_ ({string, stringVec}='') - Correlation: '' ==> all, correlation="XX,YY".
- timerange_ ({string, stringVec, int, intVec}='') - Select data by time range.
- intent_ ({string, stringVec, int, intVec}='') - Select data by scan intent.
- array_ ({string, stringVec, int, intVec}='') - Select (sub)array(s) by array ID number.
- uvrange_ ({string, stringVec, int, intVec}='') - Select data by baseline length.
- observation_ ({string, stringVec, int, intVec}='') - Select by observation ID(s).
- feed_ ({string, stringVec, int, intVec}='') - Multi-feed numbers: Not yet implemented.
- datacolumn_ (string='corrected') - Which data column(s) to process.
.. raw:: html
<details><summary><i> datacolumn = model </i></summary>
- realmodelcol_ (bool=False) - Make real a virtual MODEL column.
.. raw:: html
</details>
.. raw:: html
<details><summary><i> datacolumn = all </i></summary>
- realmodelcol_ (bool=False) - Make real a virtual MODEL column.
.. raw:: html
</details>
.. raw:: html
<details><summary><i> datacolumn = data,model,corrected </i></summary>
- realmodelcol_ (bool=False) - Make real a virtual MODEL column.
.. raw:: html
</details>
- keepflags_ (bool=True) - Keep *completely flagged rows* or drop them from the output.
- usewtspectrum_ (bool=False) - Force creation of the columns WEIGHT_SPECTRUM and SIGMA_SPECTRUM in the output MS, even if not present in the input MS.
- combinespws_ (bool=False) - Combine the input spws into a new output spw. Only supported when the number of channels is the same for all the spws.
- chanaverage_ (bool=False) - Average data in channels.
.. raw:: html
<details><summary><i> chanaverage = True </i></summary>
- chanbin_ ({int, intVec}=1) - Width (bin) of input channels to average to form an output channel.
.. raw:: html
</details>
- hanning_ (bool=False) - Hanning smooth data to remove Gibbs ringing.
- regridms_ (bool=False) - Transform channel labels and visibilities to a different spectral reference frame. Notice that u,v,w data is not transformed.
.. raw:: html
<details><summary><i> regridms = True </i></summary>
- mode_ (string='channel') - Regridding mode (channel/velocity/frequency/channel_b).
- nchan_ (int=-1) - Number of channels in the output spw (-1=all). Used for regridding, together with \'start\' and \'width\'.
- start_ (variant='0') - Start of the output visibilities. Used for regridding, together with \'width\' and \'nchan\'. It can be in different units, depending on the regridding mode: first input channel (mode=\'channel\'), first velocity (mode=\'velocity\'), or first frequency (mode=\'frequency\'). Example values: \'5\', \'0.0km/s\', \'1.4GHz\', for channel, velocity, and frequency modes, respectively.
- width_ (variant='1') - Channel width of the output visibilities. Used for regridding, together with \'start\', and \'nchan\'. It can be in different units, depending on the regridding mode: number of input channels (mode=\'channel\'), velocity (mode=\'velocity\'), or frequency (mode=\'frequency\'. Example values: \'2\', \'1.0km/s\', \'1.0kHz\', for channel, velocity, and frequency modes, respectively.
- nspw_ (int=1) - Number of output spws to create in output MS.
- interpolation_ (string='linear') - Spectral interpolation method.
- phasecenter_ (variant='') - Phase center direction to be used for the spectral coordinate transformation: direction measure or field index
- restfreq_ (string='') - Rest frequency to use for output.
- outframe_ (string='') - Output reference frame (''=keep input frame).
- veltype_ (string='radio') - Velocity definition.
- preaverage_ (bool=False) - Pre-average channels before regridding, when the ratio between the output and and input widths is greater than 2.
.. raw:: html
</details>
- timeaverage_ (bool=False) - Average data in time.
.. raw:: html
<details><summary><i> timeaverage = True </i></summary>
- timebin_ (string='0s') - Bin width for time averaging.
- timespan_ ({string, stringVec}='') - Span the timebin across scan, state or both.
- maxuvwdistance_ (double=0.0) - Maximum separation of start-to-end baselines that can be included in an average. (meters)
.. raw:: html
</details>
- docallib_ (bool=False) - Enable on-the-fly (OTF) calibration as in task applycal
.. raw:: html
<details><summary><i> docallib = True </i></summary>
- callib_ (string='') - Path to calibration library file
.. raw:: html
</details>
- douvcontsub_ (bool=False) - (Deprecated) Enable continuum subtraction as in task uvcontsub
.. raw:: html
<details><summary><i> douvcontsub = True </i></summary>
- fitspw_ (string='') - Spectral window:channel selection for fitting the continuum
- fitorder_ (int=0) - Polynomial order for the fits
- want_cont_ (bool=False) - Produce continuum estimate instead of continuum subtracted data
- denoising_lib_ (bool=True) - Use new denoising library (based on GSL) instead of casacore fitting routines
- nthreads_ (int=1) - Number of OMP threads to use (currently maximum limited by number of polarizations)
- niter_ (int=1) - Number of iterations for re-weighted linear fit
.. raw:: html
</details>
.. _Description:
Description
.. warning:: There are `Known Issues <../../notebooks/introduction.html#Known-Issues>`__ for mstransform.
**mstransform** is a multipurpose task that provides all the
functionality of
`split, partition, cvel, hanningsmooth, uvcontsub and applycal <../../api/casatasks.rst>`__
with the possibility of applying each of these transformations
separately or together in an in-memory pipeline, thus avoiding
unnecessary I/O steps. Each transformation can be activated
through a boolean parameter in the task interface. Below are the
main parameter descriptions. See also how to run **mstransform**
for some use-cases in the Examples section below.
.. rubric:: Parameter Descriptions
*createmms*
When set to True, this parameter will create an output Multi-MS,
which is the basic step for running CASA in parallel. See more
about this in the
`Parallelization <../../notebooks/parallel-processing.ipynb>`__
chapter.
.. rubric:: Combination of spws: *combinespws*
Combine the input spectral windows into a new output spectral
window. Whenever the data to be combined has different *EXPOSURE*
values in the spectral windows, mstransform will use the
*WEIGHT_SPECTRUM* for the combination. If *WEIGHT_SPECTRUM* is not
available, it will use the values from the *WEIGHT* column. Each
output channel is calculated using the following equation:
.. math:: outputChannel_{j} = \frac{\sum (inputChannel_{i}*contributionFraction_{i}*inputWeightSpectrum_{i})}{\sum(contributionFraction_{i}*inputWeightSpectrum_{i})}
.. warning:: **ALERT**: The combination of spws is only supported when the
number of channels is the same for all the spws. Using this
option with different numbers of channels for different spws
will result in an error.
.. rubric:: Channel averaging: *chanaverage*
Average data across channels. Partially flagged data is not
included in the average unless all data contributing to a given
output channel is flagged. In this case, **mstransform**
calculates the average of all flagged data, and writes it to the
output MS with the corresponding flag set to true. If present,
*WEIGHT_SPECTRUM*/*SIGMA_SPECTRUM* are used together with the
channelized flags (FLAG), to compute a weighted average (using
*WEIGHT_SPECTRUM* for *CORRECTED_DATA* and *SIGMA_SPECTRUM* for
*DATA*). The sub-parameter *chanbin* takes an integer number or a
list of integers. If a list is given, each bin applies to one of
the selected spws.
.. note:: **NOTE**: *WEIGHT_SPECTRUM*/*SIGMA_SPECTRUM* will be used (if
present) in addition to the flags to compute a weighted
average. The calculations is done as follows:
#. When WEIGHT_SPECTRUM/SIGMA_SPECTRUM are not present:
.. math:: Average = \frac{\sum(Chan_{i}*Flag_{i})}{\sum(Flag_{i})}
#. When WEIGHT_SPECTRUM/SIGMA_SPECTRUM are present:
.. math:: Average = \frac{\sum(Chan_i*Flag_i*WeightSpectrum_i)}{\sum(Flag_i*WeightSpectrum_i)}
.. rubric:: Hanning smoothing: *hanning*
This function Hanning smooths the frequency channels with a
weighted running average to remove Gibbs ringing. The weights are
0.5 for the central channel and 0.25 for each of the two adjacent
channels. The first and last channels are flagged. Inclusion of a
flagged value in an average causes that data value to be flagged.
By default, all visibility data columns available in the MS will
be smoothed, unless a specific column is given in the *datacolumn*
parameter.
.. rubric:: Reference frame transformation: *regridms*
Transform channel labels and visibilities to a different spectral
reference frame, which is appropriate for science analysis. For
example, transform from TOPO to LSRK to correct for Doppler shifts
throughout the time of the observation.
.. note:: **NOTE**: U,V,W data are not transformed with this function
The regridding *mode* can be "channel", "velocity", "frequency" or
"channel_b", *channel* being the default. When set to *velocity*
or *frequency*, it means that the channels must be specified in
the respective units. When set to *channel_b* it means an
alternative channel mode that does not force an equidistant grid,
which is faster to process.
The *start* sub-parameter gives the first channel to use in the
output spw (depending on the *mode*). When *mode='channel'*,
*start* means the first channel in the input spw to use when
creating the output spw. When *mode='frequency'*, *start* means
the lowest frequency of the output spw. If this information is not
available, **mstransform** will calculate it automatically.
The *width* sub-parameter gives the width of the output channels.
The *width* is expressed in different units, depending on the
*mode* chosen. This way the sub-parameter *width* can take units
of either number of input channels (mode="channel"), velocity
(mode="velocity"), or frequency (mode="frequency"). For example,
the value of the *width* parameter can be "4" (mode="channel"),
"-1.0km/s" (mode="velocity"), or "1.0kHz" (mode="frequency").
.. warning:: **NOTE**: **mstransform** will only shift spws with channel
widths of the same sign in a single operation. If you are
regridding spws with mixed positive and negative channel
widths, you should run this task separated for each group of
spws. You can verify the channel widths for your MS using
**listobs** for example, and looking at the SPW table, column
ChanWidth.
It is possible to separate the spectral windows into a given
number of spws. This is achieved with the sub-parameter *nspw*,
which is activate when set to > 1. Internally, the framework will
combine the selected spws before separating them so that channel
gaps and overlaps are taken into account. This sub-parameter will
create a regular grid of spws in the output MS. If *nchan* is set,
it will refer to the number of output channels in each of the
separated spws.
.. rubric:: Time averaging: *timeaverage*
Average data across time by setting *timeaverage=True* and giving
the bin for averaging using the sub-parameter *timebin*. Partially
flagged data is not included in the average unless all data
contributing to a given output channel is flagged. In this case,
**mstransform** calculates the average of all flagged data, and
writes it to the output MS with the corresponding flag set to
True. If *keepflags=False*, the fully flagged data is not written
to the output MS. If present,
*WEIGHT_SPECTRUM*/*SIGMA_SPECTRUM* are used together with the
channelized flags (*FLAG*), to compute a weighted average (using
*WEIGHT_SPECTRUM* for *CORRECTED_DATA* and *SIGMA_SPECTRUM* for
*DATA*). Otherwise *WEIGHT*/*SIGMA* are used instead to average
together data from different integrations.
The *timespan* sub-parameter will span the *timebin* across scans,
states or both. State is equivalent to sub-scans and one scan may
have several state IDs. Another option when doing time averaging
is to provide a maximum separation of start-to-end baselines that
can be included in an average with the use of the *maxuvwdistance*
sub-parameter.
.. rubric:: On-the-fly calibration parameters: *docallib*
**mstransform** is able to apply the calibrations on the fly,
similar to the **applycal** task. This is possible by specifying a
`Cal
Library <../../notebooks/uv_manipulation.ipynb#On-the-fly-calibration>`__
filename that contains the actual specification for the
calibrations to be applied. See more about the Cal Library file
syntax `here <../../build/notebooks/cal_library_syntax.ipynb>`__.
See also the examples section below for how to apply the Cal library in
mstransform.
.. rubric:: Multi-MS Processing using mstransform
Task **mstransform** will process an input
`Multi-MS <../../notebooks/parallel-processing.ipynb#The-Multi-MS>`__
(MMS) in parallel whenever possible. Each Sub-MS of the MMS will
be processed in a separate computer core and the results will be
post-processed at the end to create an output MMS. The output MMS
will have the same *separationaxis* of the input MMS, which will
be written to the table.info file inside the MMS directory.
Naturally, some transformations available in **mstransform**
require more care when the user first partition the MS. If one
wants to do a combination of spws by setting the
parameter *combinespws=True* in **mstransform**, the input MMS
needs to contain all the selected spws in each of the Sub-MSs or
the processing will fail. For this, one may set the
initial *separationaxis* to 'scan' or use the default 'auto' with
a proper *numsubms* set so that each Sub-MS in the MMS is
self-contained with all the necessary spws for the combination.
The task will check if the Sub-MSs contain all the selected spws
when *combinespws=True* and if not, it will issue a warning and
process the input MMS as a monolithic MS. In this case, the
separation axis of the output MMS will be set to 'scan',
regardless of what the input axis was.
A similar case happens when the separation axis of the input MMS
is per 'scan' and the user wants to do time averaging with time
spanning across scans. If the individual Sub-MSs are
not self-contained of the necessary scans and the duration of the
scans is shorter than the given *timebin*, the spanning will not
be possible. In this case, the task will process the input MMS
as a monolithic MS and will set the axis of the output MMS to spw.
It is important that the user sets the separation axis correctly
when first partitioning the MS. See the table below for when it is
possible to process the input MMS in parallel or not,
using **mstransform**.
+-----------------+-----------------+-----------------+-----------------+
| **input MMS | **combinespws = | **nspw > 1** | **timeaverage = |
| axis** | True** | | True** |
| | | | |
| | | | **timespan = |
| | | | 'scan'** |
+-----------------+-----------------+-----------------+-----------------+
| scan | YES | YES | NO |
+-----------------+-----------------+-----------------+-----------------+
| spw | NO | NO | YES |
+-----------------+-----------------+-----------------+-----------------+
| auto | maybe | maybe | maybe |
+-----------------+-----------------+-----------------+-----------------+
.. note:: **NOTE**: If **mstransform** decides it's not possible to
process the MMS in parallel, it will still create an output but
the processing will run serially without any parallelization
involved.
.. _Examples:
Examples
Split out a single channel:
::
mstransform(vis='ctb80-vsm.ms', outputvis='mychn.ms',
datacolumn='data', spw='0:25')
Combine the selected spws into a single output spw:
::
mstransform(vis='Four_ants.ms', outputvis='myspw.ms',
combinespws=True, spw='0~3')
Combine two spws and regrid one field, using two input channels to
make one output:
::
mstransform(vis='jupiter6cm.demo.ms',outputvis='test1.ms',datacolumn='DATA',field='11',
spw='0,1', combinespws=True, regridms=True, nchan=1, width=2)
Combine 24 spws and regrid in frequency mode to create 21 output
channels, change the phase center:
::
mstransform(vis='g19_d2usb_targets_line.ms',
outputvis='test2.ms', datacolumn='DATA', combinespws=True,
regridms=True, mode='frequency', nchan=21, start='229587.0MHz',
width='1600kHz', phasecenter="J2000 18h25m56.09 -12d04m28.20")
Apply Hanning smoothing to an MS:
::
mstransform(vis='g19_d2usb_targets_line.ms',
outputvis='test3.ms', datacolumn='DATA', hanning=True)
Change the reference frame and apply Hanning smoothing after
combining all spws:
::
mstransform(vis='g19_d2usb_targets_line.ms',
outputvis='test4.ms', datacolumn='DATA', combinespws=True,
regridms=True, mode="channel", outframe="BARY",
phasecenter="J2000 18h25m56.09 -12d04m28.20", hanning = True)
Apply time averaging using a bin of 30 seconds on the default
*CORRECTED* column:
::
mstransform(vis='g19_d2usb_targets_line.ms',
outputvis='test5.ms', timeaverage=True, timebin='30s')
Apply OTF calibration to ngc5921 using a calibration library:
::
mstransform(vis='ngc5921.ms',
outputvis='ngc5921_calibrated.ms',docallib=True,
callib='./ngc5921_callib.txt')
The calibration file (ngc5921_callib.txt) used in the above
example contains the following information:
::
caltable='ngc5921_regression/ngc5921.bcal' calwt=True tinterp='nearest'
caltable='ngc5921_regression/ngc5921.fluxscale' calwt=True tinterp='nearest' fldmap='nearest'
caltable='ngc5921_regression/ngc5921.gcal' calwt=True field='0' tinterp='nearest' fldmap=[0]
caltable='ngc5921_regression/ngc5921.gcal' calwt=True field='1,2' tinterp='linear' fldmap='1'
.. _Development:
Development
No additional development details
.. _Details:
Parameter Details
Detailed descriptions of each function parameter
.. _vis:
| ``vis (path)`` - Name of input Measurement set or Multi-MS.
.. _outputvis:
| ``outputvis (string='')`` - Name of output Measurement Set or Multi-MS.
.. _createmms:
| ``createmms (bool=False)`` - Create a multi-MS output from an input MS.
.. _separationaxis:
| ``separationaxis (string='auto')`` - Axis to do parallelization across(scan,spw,auto,baseline).
.. _numsubms:
| ``numsubms ({string, int}='auto')`` - The number of Sub-MSs to create (auto or any number)
.. _tileshape:
| ``tileshape (intVec=[0])`` - List with 1 or 3 elements giving the tile shape of the disk data columns.
.. _field:
| ``field ({string, stringVec, int, intVec}='')`` - Select field using ID(s) or name(s).
.. _spw:
| ``spw ({string, stringVec, int, intVec}='')`` - Select spectral window/channels.
.. _scan:
| ``scan ({string, stringVec, int, intVec}='')`` - Select data by scan numbers.
.. _antenna:
| ``antenna ({string, stringVec, int, intVec}='')`` - Select data based on antenna/baseline.
.. _correlation:
| ``correlation ({string, stringVec}='')`` - Correlation: '' ==> all, correlation="XX,YY".
.. _timerange:
| ``timerange ({string, stringVec, int, intVec}='')`` - Select data by time range.
.. _intent:
| ``intent ({string, stringVec, int, intVec}='')`` - Select data by scan intent.
.. _array:
| ``array ({string, stringVec, int, intVec}='')`` - Select (sub)array(s) by array ID number.
.. _uvrange:
| ``uvrange ({string, stringVec, int, intVec}='')`` - Select data by baseline length.
.. _observation:
| ``observation ({string, stringVec, int, intVec}='')`` - Select by observation ID(s).
.. _feed:
| ``feed ({string, stringVec, int, intVec}='')`` - Multi-feed numbers: Not yet implemented.
.. _datacolumn:
| ``datacolumn (string='corrected')`` - Which data column(s) to process.
.. _realmodelcol:
| ``realmodelcol (bool=False)`` - Make real a virtual MODEL column.
.. _keepflags:
| ``keepflags (bool=True)`` - Keep *completely flagged rows* or drop them from the output.
.. _usewtspectrum:
| ``usewtspectrum (bool=False)`` - Force creation of the columns WEIGHT_SPECTRUM and SIGMA_SPECTRUM in the output MS, even if not present in the input MS.
.. _combinespws:
| ``combinespws (bool=False)`` - Combine the input spws into a new output spw. Only supported when the number of channels is the same for all the spws.
.. _chanaverage:
| ``chanaverage (bool=False)`` - Average data in channels.
.. _chanbin:
| ``chanbin ({int, intVec}=1)`` - Width (bin) of input channels to average to form an output channel.
.. _hanning:
| ``hanning (bool=False)`` - Hanning smooth data to remove Gibbs ringing.
.. _regridms:
| ``regridms (bool=False)`` - Transform channel labels and visibilities to a different spectral reference frame. Notice that u,v,w data is not transformed.
.. _mode:
| ``mode (string='channel')`` - Regridding mode (channel/velocity/frequency/channel_b).
.. _nchan:
| ``nchan (int=-1)`` - Number of channels in the output spw (-1=all). Used for regridding, together with \'start\' and \'width\'.
.. _start:
| ``start (variant='0')`` - Start of the output visibilities. Used for regridding, together with \'width\' and \'nchan\'. It can be in different units, depending on the regridding mode: first input channel (mode=\'channel\'), first velocity (mode=\'velocity\'), or first frequency (mode=\'frequency\'). Example values: \'5\', \'0.0km/s\', \'1.4GHz\', for channel, velocity, and frequency modes, respectively.
.. _width:
| ``width (variant='1')`` - Channel width of the output visibilities. Used for regridding, together with \'start\', and \'nchan\'. It can be in different units, depending on the regridding mode: number of input channels (mode=\'channel\'), velocity (mode=\'velocity\'), or frequency (mode=\'frequency\'. Example values: \'2\', \'1.0km/s\', \'1.0kHz\', for channel, velocity, and frequency modes, respectively.
.. _nspw:
| ``nspw (int=1)`` - Number of output spws to create in output MS.
.. _interpolation:
| ``interpolation (string='linear')`` - Spectral interpolation method.
.. _phasecenter:
| ``phasecenter (variant='')`` - Phase center direction to be used for the spectral coordinate transformation: direction measure or field index
.. _restfreq:
| ``restfreq (string='')`` - Rest frequency to use for output.
.. _outframe:
| ``outframe (string='')`` - Output reference frame (''=keep input frame).
.. _veltype:
| ``veltype (string='radio')`` - Velocity definition.
.. _preaverage:
| ``preaverage (bool=False)`` - Pre-average channels before regridding, when the ratio between the output and and input widths is greater than 2.
.. _timeaverage:
| ``timeaverage (bool=False)`` - Average data in time.
.. _timebin:
| ``timebin (string='0s')`` - Bin width for time averaging.
.. _timespan:
| ``timespan ({string, stringVec}='')`` - Span the timebin across scan, state or both.
.. _maxuvwdistance:
| ``maxuvwdistance (double=0.0)`` - Maximum separation of start-to-end baselines that can be included in an average. (meters)
.. _docallib:
| ``docallib (bool=False)`` - Enable on-the-fly (OTF) calibration as in task applycal
.. _callib:
| ``callib (string='')`` - Path to calibration library file
.. _douvcontsub:
| ``douvcontsub (bool=False)`` - Enable continuum subtraction as in task uvcontsub. Note: this parameter is deprecated and will be removed in an upcoming release. The task uvcontsub can be used as an alternative.
.. _fitspw:
| ``fitspw (string='')`` - Spectral window:channel selection for fitting the continuum
.. _fitorder:
| ``fitorder (int=0)`` - Polynomial order for the fits
.. _want_cont:
| ``want_cont (bool=False)`` - Produce continuum estimate instead of continuum subtracted data
.. _denoising_lib:
| ``denoising_lib (bool=True)`` - Use new denoising library (based on GSL) instead of casacore fitting routines
.. _nthreads:
| ``nthreads (int=1)`` - Number of OMP threads to use (currently maximum limited by number of polarizations)
.. _niter:
| ``niter (int=1)`` - Number of iterations for re-weighted linear fit
.. _disableparallel:
| ``disableparallel (bool=False)`` - Hidden parameter for internal use only. Do not change it!
.. _ddistart:
| ``ddistart (int=-1)`` - Hidden parameter for internal use only. Do not change it!
.. _taql:
| ``taql (string='')`` - Table query for nested selections
.. _monolithic_processing:
| ``monolithic_processing (bool=False)`` - Hidden parameter for internal use only. Do not change it!
.. _reindex:
| ``reindex (bool=True)`` - Hidden parameter for use in the pipeline context only
"""
pass