<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" ?>
<casaxml xmlns="http://casa.nrao.edu/schema/psetTypes.html"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://casa.nrao.edu/schema/casa.xsd
file:///opt/casa/code/xmlcasa/xml/casa.xsd">
<task type="function" name="accum" category="calibration">
<shortdescription>Accumulate incremental calibration solutions into a calibration table</shortdescription>
Accum will interpolate and extrapolate a calibration
table onto a new table that has a regularly-space time grid.
The first run of accum defines the time grid and fills this
table with the results from the input table.
Subsequent use of accum will combine additional calibration
tables onto the same grid of the initial accum table to obtain
an output accum table. See below for concrete examples.
Accum tables are similar to CL tables in AIPS
Incremental tables are similar to SN tables in AIPS
<param type="string" name="vis" mustexist="true">
<shortdescription>Name of input visibility file</shortdescription>
<description>Name of input visibility file
Example: vis='ngc5921.ms'
<param type="string" name="tablein">
<shortdescription>Input cumulative calibration table; use \'\' on first run</shortdescription>
<description>Input cumulative calibration table
On first execution of accum, tablein='' and
accumtime is used to generate tablein with the
<param type="any" name="accumtime" subparam="true">
<any type="variant" limittypes="double int"/>
<shortdescription>Time-interval when create cumulative table</shortdescription>
<description>The time separation when making tablein.
Note: This time should not be less than the
visibility sampling time, but should be less than
about 30% of a typical scan length.
<value type="double">1.0</value>