<!--Copyright (C) 1988-2005 by the Institute of Global Environment and Society (IGES). See file COPYRIGHT for more information.--> <html> <head> <title>GrADS Command: collect</title> </head> <body text="#000000" bgcolor="e0f0ff"> <h2><b>collect</b></h2> <p> This command provides a way for station data profiles and time series to be saved in memory as a set. The command format is: <p> <ul><code>collect <i>cnum expr</i></code></ul> <p> where <code><i>cnum</i></code> is the collection number, a value from 0 to 31, and <code><i>expr</i></code> is any GrADS expression that gives a station data result. If <code>"free"</code> is given for <code><i>expr</i></code>, the collection is emptied and all storage is freed. <p> <h3>Usage Notes</h3> <p> <ol> <li>The <code>collect</code> command will only work when one dimension is varying, either Z or T. Each time <code>collect</code> is issued for a particular collection number, the station data is added to the collection of stations. The order in which stations are added is important. <p> <li>After a group of station profiles or time series have been saved as a collection, use the <a href="gradfunccoll2gr.html">coll2gr</a> function to convert the collection into a grid. <p> <li>See the section of the User's Guide on <a href="usingstationdata.html#xsection">Arbitrary Cross Sections</a> for more information. </ol> </body> </html>
