<param type="int" name="niter" subparam="true"><shortdescription>For biweight, this is the maximum number of iterations to attempt. Iterating will stop when either this limit is reached, or the zscore criterion is met. If negative, do a fast, simple computation (see description). Ignored if the algorithm is not "biweight".</shortdescription><description>For biweight, this is the maximum number of iterations to attempt. Iterating will stop when either this limit is reached, or the zscore criterion is met. If negative, do a fast, simple computation (see description). Ignored if the algorithm is not "biweight".</description>
<casaxml xsi:schemaLocation="http://casa.nrao.edu/schema/casa.xsd file:///opt/casa/code/xmlcasa/xml/casa.xsd" xmlns="http://casa.nrao.edu/schema/psetTypes.html" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<task type="function" name="imstat" category="information, analysis">
<shortdescription>Displays statistical information from an image or image region</shortdescription>
<param type="path" name="imagename" kind="image" mustexist="true"><shortdescription>Name of the input image</shortdescription><description>Name of the input image</description>
<example>imagename=ngc5921_task.image</example>
<param type="any" name="axes"><shortdescription>List of axes to evaluate statistics over. Default is all axes.</shortdescription><description>List of axes to evaluate statistics over. Default is all axes.</description>
<example>[0, 1]</example>
<param type="string" name="region"><shortdescription>Region selection. Default is to use the full image.</shortdescription><description>Region selection. Default is to use the full image.</description>
<param type="string" name="box"><shortdescription>Rectangular region(s) to select in direction plane. Default is to use the entire direction plane.</shortdescription><description>Rectangular region(s) to select in direction plane. Default is to use the entire direction plane.</description>
<param type="string" name="chans"><shortdescription>Channels to use. Default is to use all channels.</shortdescription><description>Channels to use. Default is to use all channels.</description>
<param type="string" name="stokes"><shortdescription>Stokes planes to use. Default is to use all Stokes planes.</shortdescription><description>Stokes planes to use. Default is to use all Stokes planes.</description>
<example>stokes="IQ"</example>
<example>stokes="RR,LL"</example>
<param type="bool" name="listit"><shortdescription>Print stats and bounding box to logger?</shortdescription><description>Print stats and bounding box to logger?</description>
<param type="bool" name="verbose"><shortdescription>Print additional messages to logger?</shortdescription><description>Print additional messages to logger?</description>
<param type="string" direction="in" name="mask"><shortdescription>Mask to use. Default is none.</shortdescription><description>Mask to use. Default is none.</description>
<param type="bool" direction="in" name="stretch" subparam="true"><shortdescription>Stretch the mask if necessary and possible? </shortdescription><description>Stretch the mask if necessary and possible? </description>
<param type="string" name="logfile"><shortdescription>Name of file to write fit results.</shortdescription><description>Name of file to write fit results.</description>
<example>logfile="myimfitlog.txt"</example>
<param type="bool" name="append" subparam="true"><shortdescription>If logfile exists, append to it if True or overwrite it if False</shortdescription><description>If logfile exists, append to it if True or overwrite it if False</description>