<?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="immath" category="analysis">
<shortdescription>Perform math operations on images</shortdescription>
<description> math on images
<param type="any" name="imagename">
<description>a list of input images </description>
<any type="variant" limttypes="string stringArray"/>
<value type="string"></value>
<param type="string" name="mode">
<description>mode for math operation (evalexpr, spix, pola, poli)</description>
<example>'evalexpr', 'spix', 'pola', or 'poli' </example>
<param type="string" name="outfile">
<description>File where the output is saved</description>
<value>immath_results.im</value>
<example>outfile="newimage"</example>
<param type="string" name="expr" subparam="true">
<description>Mathematical expression using images</description>
<example>expr='"sin(image1.im)+(image2.im*2)+real(image3.im)"'</example>
<param type="any" name="varnames" subparam="true">
<description>a list of variable names to use with the image files</description>
<any type="variant" limttypes="string stringArray"/>
<value type="string"></value>
<param type="string" name="sigma" subparam="true">
<description>standard deviation of noise for debiasing</description>
<value>0.0mJy/beam</value>
<param type="string" name="polithresh" subparam="true">
<description>Threshold in linear polarization intensity image below which to mask pixels.</description>
<param type="string" name="mask">
<description>Mask to use. Default is none.</description>
<param type="string" name="region">
<description>Region selection. Default is to use the full image.</description>
<param type="string" name="box">
<description>Rectangular region to select in direction plane. Default is to use the entire direction plane.</description>
<param type="string" name="chans" >
<description>Channels to use. Default is to use all channels.</description>
<param type="string" name="stokes">
<description>Stokes planes to use. Default is to use all Stokes planes.</description>
<example>stokes='IQ'</example>
<example>stokes='RR,LL'</example>