<casaxml xsi:schemaLocation="http://casa.nrao.edu/schema/casa.xsd file:///opt/casa/code/xmlcasa/xml/casa.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://casa.nrao.edu/schema/psetTypes.html">
<task category="manipulation" name="phaseshift" type="function">
<shortdescription>Rotate a Measurement Set to a new phase-center</shortdescription>
This application changes the phase center of a selected subset of an input MS, by taking into
account the full 3D geometry in the UVW plane (similar to the phasecenter setting in the
imaging tasks). This function produces an output MS with modified UVW values, visibility
phases, and a new phase_direction entry in the FIELD sub-table.
<param mustexist="true" name="vis" type="path">
<shortdescription>Name of input visibility file</shortdescription>
<description>Name of input visibility file
Default: none, must be specified
Example: vis='ngc5921.ms'
<param name="outputvis" type="string">
<shortdescription>Name of output visibility file</shortdescription>
<description>Name of output visibility file
Default: None, must be specified
Example: outputvis='ngc5921_out.ms'
<param name="keepmms" type="bool">
<shortdescription>Create a Multi-MS as the output if the input is a Multi-MS.</shortdescription>
<description>Create a Multi-MS as the output if the input is a
By default it will create a Multi-MS when the
input is a Multi-MS. The output Multi-MS will
have the same partition axis of the input
MMS. See CASA Docs for more information on
<param name="field" type="string">
<shortdescription>Select field using field id(s) or field name(s)</shortdescription>
<description>Select field using field id(s) or field name(s)
Use 'go listobs' to obtain the list id's or
names. If field string is a non-negative integer,
it is assumed a field index, otherwise, it is
field='0~2'; field ids 0,1,2