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Using the logical expressions in the new version of GrADS, the command would look like this:
<div>‘d maskout(mytemp,mytemp<0)’</div>
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<div>But if you don’t have the new version, try this instead:</div>
<div>‘d maskout(mytemp,0-mytemp)’</div>
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<div>—Jennifer</div>
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<div>On Mar 1, 2017, at 10:21 AM, Becker, Bernd <<a href="mailto:bernd.becker@metoffice.gov.uk">bernd.becker@metoffice.gov.uk</a>> wrote:</div>
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<p class="MsoNormal" style="background:white"><span class="font"><span style="font-size:9.5pt;font-family:"Tahoma","sans-serif";color:#222222">'define mytemp2 = const(const(mytemp,1),0.0,-u)'</span></span><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#222222"><o:p></o:p></span></p>
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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"">
<a href="mailto:gradsusr-bounces@gradsusr.org">gradsusr-bounces@gradsusr.org</a> [<a href="mailto:gradsusr-bounces@gradsusr.org">mailto:gradsusr-bounces@gradsusr.org</a>]
<b>On Behalf Of </b>d.nairn<br>
<b>Sent:</b> 01 March 2017 14:27<br>
<b>To:</b> GrADS Forum<br>
<b>Subject:</b> [gradsusr] Maskout<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" style="background:white"><span style="font-family:"Tahoma","sans-serif";color:#222222">Hello<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Tahoma","sans-serif";color:#222222">I have this maskout command working for only displaying temperatures above 20(c)<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span class="font"><span style="font-size:9.5pt;font-family:"Tahoma","sans-serif";color:#222222">'define mytemp2 = const(const(maskout(mytemp,mytemp-20),1),0.0,-u)'</span></span><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#222222"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#222222"> </span></p>
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<p class="MsoNormal" style="background:white"><span class="font"><span style="font-size:9.5pt;font-family:"Tahoma","sans-serif";color:#222222">I cannot figure out how to rewrite that command to display only temperatures below 0(c)</span></span><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#222222"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span class="font"><span style="font-size:9.5pt;font-family:"Tahoma","sans-serif";color:#222222">Can anybody help me out?</span></span><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#222222"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#222222"> </span></p>
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<p class="MsoNormal" style="background:white"><span class="font"><span style="font-size:9.5pt;font-family:"Tahoma","sans-serif";color:#222222">Thanks</span></span><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#222222"><o:p></o:p></span></p>
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<div style="font-size: 12px; orphans: 2; widows: 2;">--</div>
<div style="font-size: 12px; orphans: 2; widows: 2;">Jennifer Miletta Adams<br>
Center for Ocean-Land-Atmosphere Studies (COLA)<br>
George Mason University<br>
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