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<body class='hmmessage'><div dir='ltr'>Hello grads users. I have netcdf file containing daily sst data over a year, and I need to extract the grid data over an irregular area for each day, so I used the maskout function.<br><br>First I created a shapefile for the area that I needed using ArcGis software (1.png).<br><br>Then I followed the instructions posted in a previous thread by Dr. Yaqiang Wang (http://gradsusr.org/pipermail/gradsusr/2013-April/034603.html). So using MeteoInfo software I made a grads maskout data with the shapefile (2.png), and I changed the TDEF in the maskout ctl file just as stated (3.png).<br><br>The maskout works fine for the first day (t=1) of the data (4.png), but the problem is that when I try to use another 't' different than 1 it gives an error (5.png).<br><br>I hope you could give some ideas of what the error might be. Is it a mistake of how to create the shapefile, or an error in the control file?<br><br>Looking forward for your help. Thanks in advance.<br><br>Alejandro.<br><br><div id="inlineImage0" style="display: inline-block"><!--tmpl() _66--><span contenteditable="true"> </span><span contenteditable="true"> </span><!--/tmpl--></div><em><font color="#ff0000" face="Garamond, Times, Serif " size="4"></font></em> </div></body>
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