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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Jennifer<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks for the reply.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I have been using the method you describe however, the GrADS Data Server I am accessing (I don’t administer it) is breaking my request midway through GrADS
defining process. The server admin is telling me the GDS is reporting that I am making too many data requests (</span><i><span style="font-size:9.0pt;color:#7F7F7F">subset operation failed; creation of child process failed - Cannot run program "nice":
error=24, Too many open files)</span></i><span style="font-size:9.0pt;color:#7F7F7F">.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Obviously you’re not in receipt of all the facts but as far as I can tell everything is being done correctly on my side. Can you think of any possible causes
of this?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks again for all your efforts.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:10.0pt;line-height:115%"><b><span style="font-size:10.0pt;line-height:115%;font-family:"Arial","sans-serif";color:#1F497D">Kieren Marsh<br>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> gradsusr-bounces@gradsusr.org [mailto:gradsusr-bounces@gradsusr.org]
<b>On Behalf Of </b>Jennifer Adams<br>
<b>Sent:</b> 28 May 2014 23:18<br>
<b>To:</b> GrADS Users Forum<br>
<b>Subject:</b> Re: [gradsusr] Accessing data chunks via GrADS data server<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On May 27, 2014, at 8:45 PM, Marsh, Kieren [FGUAE] wrote:<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Can someone please explain to me how the bracketed notation works to extract data from a GDS. By this I mean the following:</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><a href="http://metserver:9090/dods/neww3/neww3.00z.ascii?htsgwsfc%5b0:20%5d%5b0:40%5d%5b110%5d%5b72" target="_blank"><em><span style="font-family:"Arial","sans-serif";color:black">http://metserver:9090/dods/neww3/neww3.00z.ascii?htsgwsfc[0:20][0:40][110][72</span></em></a></span><em><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">]</span></em><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">which extracts htsgwsfc over ensemble members 1-21 (0-20 when zero based), time values 0-40 at x=110 and y=72 and gives an ascii text file I can grab using something
like wget.</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Am I able to use this kind of notation in GrADS scripts to access a chunk of data that I can define to a variable?</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">e.g.</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">'define myvar =<span class="apple-converted-space"> </span><em><span style="font-family:"Arial","sans-serif""><a href="http://metserver:9090/dods/neww3/neww3.00z.?htsgwsfc%5b0:20%5d%5b0:40%5d%5b110%5d%5b72%5d'" target="_blank">http://metserver:9090/dods/neww3/neww3.00z.?htsgwsfc[0:20][0:40][110][72</a>]'</span></em></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">All combinations I try don't work and I can't find any documentation on it.</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The way to do this is to open the URL, then set the dimension environment in GrADS, then define your variable. <o:p></o:p></p>
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<p class="MsoNormal">Something like this:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">'sdfopen <a href="http://metserver:9090/dods/neww3/neww3.00z'">
http://metserver:9090/dods/neww3/neww3.00z'</a><o:p></o:p></p>
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<p class="MsoNormal">'set e 1 21'<o:p></o:p></p>
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<p class="MsoNormal">'set t 1 41'<o:p></o:p></p>
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<p class="MsoNormal">'set x 110'<o:p></o:p></p>
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<p class="MsoNormal">'set y 72'<o:p></o:p></p>
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<p class="MsoNormal">'myvar=htsgwsfc'<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">--Jennifer<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><br>
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<o:p></o:p></p>
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<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">I have looked at the documentation for access using the curly bracket notation, e.g.:</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><a href="http://metserver:9090/dods/_expr_%7bneww3/neww3.t00z%7d%7bhtsgwsfc%7d%7b73:73,111:111,1:1,00Z20MAY2014:00Z25MAY2014%7d" target="_blank"><em><span style="font-family:"Arial","sans-serif";color:black">http://metserver:9090/dods/_expr_{neww3/neww3.t00z}{htsgwsfc}{73:73,111:111,1:1,00Z20MAY2014:00Z25MAY2014}</span></em></a><o:p></o:p></span></p>
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<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">...but I don't seem to be able to capture the ensemble dimension using this format.</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Any help will be greatly appreciated.</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Kieren</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">_______________________________________________<br>
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<a href="http://gradsusr.org/mailman/listinfo/gradsusr">http://gradsusr.org/mailman/listinfo/gradsusr</a><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black">--<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black">Jennifer M. Adams<br>
Center for Ocean-Land-Atmosphere Studies (COLA)<br>
111 Research Hall, Mail Stop 2B3<br>
George Mason University<br>
4400 University Drive<br>
Fairfax, VA 22030 <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black"><o:p> </o:p></span></p>
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<o:p></o:p></span></p>
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