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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Aloha GrADS users!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have been playing around with GrADS for a few months now,
so I’m still a novice, and have read previous posts but didn’t seem
to find a question like this. I am using GrADS on a UNIX machine and have
been able to create many useful maps with .nc data. I used FORTRAN to
calculate tropospheric layer mean wind (TLMW) between 850-200mb, and separated
the output into .grd files for each component and month (ujune, vjune, ujuly,
etc). I have created several CTL files (one for each month/component), with
each file having either ‘u’ or ‘v’ as the variable and
want to combine them in a .gs script to create a seasonal average (July, August,
and September for example). I have the following in my .gs :<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>open ujune.ctl<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>open vjune.ctl<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>open ujuly.ctl<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>open vjuly.ctl<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>etc<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The first 2 files open, and will display without any problem
using d u;v.2. The message I get when it just attempts to open the
3<sup>rd</sup> ctl file (in this case ujuly) and any files after is:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><br>
Data request error: invalid grid coordinates. World coordinates convert
to non-integer grid coordinates<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Variable u.3 dimension=3 <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Each ctl file works fine alone (and are identical, one is
for u values in June, v values in June, etc), and if I switch the order
whichever 2 files are first open with no problem, those after do not. I
am able to view monthly data fine, but can’t combine it as any files
after 2 will not open. The ctl files are as follows:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>dset ujuly.tlmw.66-03.grd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>title ahfkahsdf<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>undef -999<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>xdef 144 linear 0 2.5<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ydef 73 linear -90 2.5<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>zdef 1 linear 1 1<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>tdef 38 linear jul1966 12mo<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>vars 1<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>u 0 -999 akjfdhlakjdgh<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>endvars<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>(the only difference between ctl files is the dset will be
ujune.tlmw.66-03.grd, etc in each ctl file, and the tdef 38 linear jul1966 12mo
would be jun1966, etc)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Any idea how to open more than just these 2 ctl files so I can
create an average of 3 months in one gs script, or why I’m getting that
error? Thanks so much for your help!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Cindy </span></font><font size=2 face=Wingdings><span
style='font-size:10.0pt;font-family:Wingdings'>J</span></font><o:p></o:p></p>
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