Thank you for hint.<br>I tried <br><font style="color: rgb(0, 0, 0);" color="#000080">d
(ave(var,t=1,t=360,12)+ave(var,t=2,t=360,12)+ave(var,t=3,t=360,12))/3</font><br>after that i checked the result it gives average of three days only not for three months.<br><br>Since i has ECMWF data at 6 hour interval in the monthly form (each file contain 1 month data).<br>
So i tried as per your suggestion but it gives ave of first three days of first file only and not for the three years file.<br><br>Also i am facing the following problem<br><br>[Sushant@localhost ~]$ gradsnc<br><br>Grid Analysis and Display System (GrADS) Version 1.8SL11<br>
Copyright (c) 1988-2001 by Brian Doty <br>Center for Ocean-Land-Atmosphere Studies<br>Institute for Global Environment and Society <br>All Rights Reserved<br><br>Config: v1.8SL11 32-bit little-endian readline sdf/xdf netcdf lats printim<br>
<br>Issue 'q config' command for more information.<br><br>Landscape mode? (no for portrait): <br>GX Package Initialization: Size = 11 8.5 <br>ga-> c<br><b>ga-> sdfopen /home/Sushant/Desktop/ECMWFdata/May2002data/<a href="http://u.nc">u.nc</a> </b><br>
Scanning self-describing file: /home/Sushant/Desktop/ECMWFdata/May2002data/<a href="http://u.nc">u.nc</a><br>Found 1 data variables in SDF file.<br>Found displayable variable u with 29 levels in SDF file.<br>SDF file /home/Sushant/Desktop/ECMWFdata/May2002data/<a href="http://u.nc">u.nc</a> is open as file 1<br>
LON set to 0 360 <br>LAT set to -90 90 <br>LEV set to 50 50 <br>Time values set: 2002:5:1:0 2002:5:1:0 <br><b>ga-> sdfopen /home/Sushant/Desktop/ECMWFdata/May2001data/<a href="http://u.nc">u.nc</a> </b><br>Scanning self-describing file: /home/Sushant/Desktop/ECMWFdata/May2001data/<a href="http://u.nc">u.nc</a><br>
Found 1 data variables in SDF file.<br>Found displayable variable u with 29 levels in SDF file.<br>SDF file /home/Sushant/Desktop/ECMWFdata/May2001data/<a href="http://u.nc">u.nc</a> is open as file 2<br>ga-> set lev 1000<br>
LEV set to 1000 1000 <br>ga-> d u<br>Contouring: -20 to 20 interval 5 <br>ga-> c<br>ga-> d u.2<br><b>Data Request Warning: Request beyond file limits<br> Entire grid contents are set to missing data <br> Dimension ranges are: X = 1 240 Y = 1 121 Z = 29 29 T = 1461 124 <br>
Warning issued for variable = u.2<br>Cannot contour grid - all undefined values </b><br>ga-> c<br><br>Now can you please solve this problem.<br><br><br><br>Thank you again <br><br><br>Sushant<br> <br><br><div class="gmail_quote">
On Tue, Sep 22, 2009 at 5:50 PM, Yan Libin <span dir="ltr"><<a href="mailto:zjuyanlibin@163.com">zjuyanlibin@163.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div style="margin: 10px; font-family: verdana; font-size: 10pt;">
<div><font color="#000080" face="Verdana" size="2">d
ave(var,t=1,t=360,12)</font></div>
<div><font color="#000080"></font> </div>
<div><font color="#000080">d
(ave(var,t=1,t=360,12)+ave(var,t=2,t=360,12)+ave(var,t=3,t=360,12))/3</font></div>
<div><font color="#000080" face="Verdana" size="2"></font> </div>
<div><font color="#000080" face="Verdana" size="2"></font> </div>
<div><font color="#c0c0c0" face="Verdana" size="2">2009-09-22 </font></div><font color="#000080" face="Verdana" size="2">
<hr style="width: 100px;" align="left" color="#b5c4df" size="1">
</font>
<div><font color="#c0c0c0" face="Verdana" size="2"><span>Yan Libin</span>
</font></div>
<hr color="#b5c4df" size="1">
<div><font face="Verdana" size="2"><b>发件人：</b> sushant puranik
</font></div>
<div><font face="Verdana" size="2"><b>发送时间：</b> 2009-09-22 20:18:04
</font></div>
<div><font face="Verdana" size="2"><b>收件人：</b> GRADSUSR </font></div>
<div><font face="Verdana" size="2"><b>抄送：</b> </font></div>
<div><font face="Verdana" size="2"><b>主题：</b> How to make composite plots
</font></div><div><div></div><div class="h5">
<div><font face="Verdana" size="2"></font> </div>
<div><font face="Verdana" size="2">Hello sir <br>I wish to make composite plot for
20 year period for each month (monthly mean composite) and also want to make
composite for season (seasonal composite)(Dec-March).<br>Can you please give me
help in this regard.<br><br><br>Thanking
you<br><br>Sushant<br></font></div></div></div></div>
</blockquote></div><br>