<!--Copyright (C) 1988-2005 by the Institute of Global Environment and Society (IGES). See file COPYRIGHT for more information.--> <h2><b>mag </b></h2><p> <code>mag(<i>uexpr,vexpr</i>) </code><p> Performs the calculation: <code>sqrt(<i>uexpr*uexpr+vexpr*vexpr</i>)</code>. May be used with gridded or station data. <H3>Usage Notes</H3><P> <H3>Examples</H3><P>