Thanks, The problem is solved, I was writing <br />'aa=ave(s,t=it1,t=it5)'<br />wheras it should have been <br />'aa=ave(swh,t='it1',t='it5')'<br /><br />Raj<br />
<br><Table border=0 Width=644 Height=57 cellspacing=0 cellpadding=0 style='font-family:Verdana;font-size:11px;line-height:15px;'><TR><td><a href='http://adworks.rediff.com/cgi-bin/AdWorks/click.cgi/www.rediff.com/signature-home.htm/1050715198@Middle5/2705639_2677138/2680796/1?PARTNER=3&OAS_QUERY=null' target=new ><img src ='http://imadworks.rediff.com/cgi-bin/AdWorks/adimage.cgi/2705639_2677138/creative_2680796.gif'  alt='Shopping'  border=0></a></td></TR></Table>