<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Hi,</DIV>
<DIV> </DIV>
<DIV> You may wish to try the following approach:-</DIV>
<DIV> </DIV>
<DIV>*</DIV>
<DIV> 'sdfopen filename.nc'</DIV>
<DIV>*</DIV>
<DIV> 'ua=ave(u,t=1,t=120,4)'</DIV>
<DIV> 'va=ave(v,t=1,t=120,4)'</DIV>
<DIV>*</DIV>
<DIV> 'close 1'</DIV>
<DIV>*</DIV>
<DIV> 'open filename2.ctl'</DIV>
<DIV>*</DIV>
<DIV> ...............</DIV>
<DIV> </DIV>
<DIV> 'set gxout shaded'</DIV>
<DIV> ............</DIV>
<DIV> 'd co'</DIV>
<DIV> ............</DIV>
<DIV> 'set gxout stream'</DIV>
<DIV> 'd ua;va'</DIV>
<DIV>*</DIV>
<DIV> </DIV>
<DIV> Hope the above helps.</DIV>
<DIV> </DIV>
<DIV>Ooi</DIV></td></tr></table>