<!--Copyright (C) 1988-2005 by the Institute of Global Environment and Society (IGES). See file COPYRIGHT for more information.--> <h2><b>sqrt</b></h2><p> <code>sqrt(<i>expr</i>) </code><p> Takes the square root of the result of the <code><i>expr</i></code>. This function works on both gridded and station data. Values in <code><i>expr</i></code> that are less than zero are set to missing in the result. <H3>Usage Notes</H3><P> <H3>Examples</H3><P>