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<p style="margin-top:0;margin-bottom:0">Thank you for that clarification Davide!</p>
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<p style="margin-top:0;margin-bottom:0">I am assuming that "i" and "j" are referring to X and Y? In that case, I should be using w2gr() (world coordinates to grid coordinates), right?</p>
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<div style="color:rgb(0,0,0); font-family:Tahoma; font-size:13px"><font face="Calibri,Arial,Helvetica,sans-serif"><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9" style=""><span style="font-size:11pt"><b><span style="font-size:12pt">Aaron
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> gradsusr <gradsusr-bounces@gradsusr.org> on behalf of Davide Sacchetti <davide.sacchetti@arpal.gov.it><br>
<b>Sent:</b> Monday, October 22, 2018 3:54:32 AM<br>
<b>To:</b> GrADS Users Forum<br>
<b>Subject:</b> Re: [gradsusr] Manually Editing Grid Cell Using CSV</font>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">set defval command wants I and J, not LON and LAT</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">... just this ...</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">Bye</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">Davide<br>
</span></div>
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<div><strong>From: </strong>"Perry, Aaron" <Aaron.Perry@lsc.vsc.edu> <br>
<strong>To: </strong>GrADS Usr <gradsusr@gradsusr.org> <br>
<strong>Sent: </strong>19/10/2018 4:17 PM <br>
<strong>Subject: </strong>[gradsusr] Manually Editing Grid Cell Using CSV <br>
<br>
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<p style="margin-top:0; margin-bottom:0">Hello All,</p>
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<p style="margin-top:0; margin-bottom:0">I am trying to manually edit specific grid cells using values from a CSV file.</p>
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</p>
<p style="margin-top:0; margin-bottom:0">I have written a function to try to accomplish this but, I am having some troubles actually changing the grid cell values.</p>
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<p style="margin-top:0; margin-bottom:0">The variable that I am trying to edit has been defined as "temp"...</p>
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<p style="margin-top:0; margin-bottom:0">i.e. 'define temp = TMAX2m.1'</p>
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<p style="margin-top:0; margin-bottom:0"><b>CSV File Sample:</b></p>
<p style="margin-top:0; margin-bottom:0"><br>
</p>
<p style="margin-top:0; margin-bottom:0"></p>
<div>82.9 31.04250 -86.31167</div>
<div>69.0 30.21889 -96.37417</div>
<div>50.0 41.00928 -74.73628</div>
<div>62.0 36.61056 -83.73722</div>
<div>66.9 34.28028 -87.60028</div>
<p></p>
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<p style="margin-top:0; margin-bottom:0"><b>GrADS Function:</b></p>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">istat = 0</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">while (istat != 2)</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">data = read("/home/weather/values")</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">istat = sublin(data,1)</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">if (istat = 2)</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">break</span></div>
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</div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">endif</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">linez = sublin(data,2)</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">newval = subwrd(linez,1)</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">lat = subwrd(linez,2)</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">lon = subwrd(linez,3)</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">'q defval temp 'lon' 'lat</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">oldval = subwrd(result,2)</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">say 'Old: ('lat','lon') :'oldval</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">'set defval temp 'lon' 'lat' 'newval</span></div>
<div><span style="font-family:"Courier New",monospace; font-size:10pt">say 'New: ('lat','lon') :'newval</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">endwhile</span></div>
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<div><span style="font-family:"Courier New",monospace; font-size:10pt">rc = close("/home/weather/values")</span></div>
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<p></p>
<p style="margin-top:0; margin-bottom:0">What am I doing wrong?</p>
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