<div dir="ltr">Dear All,<div><br></div><div>I'm plotting the zonal wind (from a netcdf file) as contours and I would like to display only the contour lines that are equal to "ZERO".</div><div><br></div><div>I tried this but it doesnt work:</div><div><br></div><div><div>'set z 3'</div><div>'set t 42'</div><div>if(uwnd=0)</div><div>'set gxout contour'</div><div>'d uwnd'</div><div>endif</div><div><br></div></div><div><br></div><div>I also tried using CDO but the output are all missing values.</div><div><br></div><div>cdo eqc,0 <a href="http://ifile.nc">ifile.nc</a> <a href="http://ofile.nc">ofile.nc</a></div><div><br></div><div>Can anyone suggest how can I do this in grads?</div><div><br></div><div><br></div><div>Ill appreciate any help.</div><div><br></div><div>Sincerely,</div><div><br></div><div><div><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font face="comic sans ms, sans-serif"><b><u>Lyndon Mark P. Olaguera</u></b></font><div><br></div></div></div></div></div></div></div></div></div></div>
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