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<p>Hi Mike,</p>
<p>It looks like all of the values in that smaller domain have the
same value (=100). I suspect GrADS has problems displaying a
gridded field with constant value AND user specified clevs. If
you comment out the "set clevs..." line, you should get a
red-filled plot and a "Constant field. Value = 100" alert.
Curiously you don't get this warning with the "set clevs" line
active. it's probably how GrADS does interpolated shading and
color assignment.<br>
</p>
<p>Jim<br>
</p>
<div class="moz-cite-prefix">On 9/18/19 9:07 PM, Mike Manning wrote:<br>
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<p class="MsoNormal">Hi guys,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a very strange issue with Grads (all
versions). I have the following grads script which you can
test below:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">'sdfopen
<a class="moz-txt-link-freetext" href="https://nomads.ncep.noaa.gov:9090/dods/gfs_0p25_1hr/gfs20190919/gfs_0p25_1hr_00z">https://nomads.ncep.noaa.gov:9090/dods/gfs_0p25_1hr/gfs20190919/gfs_0p25_1hr_00z</a>'<o:p></o:p></p>
<p class="MsoNormal">'set t 47'<o:p></o:p></p>
<p class="MsoNormal">'set lon 151 153'<o:p></o:p></p>
<p class="MsoNormal">'set lat -29 -28'<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">'set rgb 45 254 254 254'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 46 0 70 255'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 48 40 100 255'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 50 80 130 255'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 52 120 160 255'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 54 160 190 255'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 56 200 220 255'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 58 240 250 255'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 60 255 205 95'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 62 255 155 45'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 63 255 130 20'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 64 255 105 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 65 255 80 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 66 255 55 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 67 255 30 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 68 255 5 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 69 230 0 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 70 205 0 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 71 185 0 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 72 160 0 0'<o:p></o:p></p>
<p class="MsoNormal">'set rgb 73 135 0 0'<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">'set clevs 5 10 15 20 25 30 35 40 45 50 55
60 65 70 75 80 85 90 95 100'<o:p></o:p></p>
<p class="MsoNormal">'set ccols 45 46 48 50 52 54 56 58 60 62 63
64 65 66 67 68 69 70 71 72 73'<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">'set gxout shaded'<o:p></o:p></p>
<p class="MsoNormal">'set csmooth on'<o:p></o:p></p>
<p class="MsoNormal">'set cmin 5'<o:p></o:p></p>
<p class="MsoNormal">'set cmax 100'<o:p></o:p></p>
<p class="MsoNormal">'display TCDCclm'<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">'printim cloudtotal.png white'<o:p></o:p></p>
<p class="MsoNormal">'quit'<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This doesn’t seem to display anything at
all except a white image.. if you change the lon from ‘set lon
151 153’ to ‘set lon 151 154’ then it works fine as it has
more than 1 value.. it’s like Grads doesn’t like a value of
100? I’m sure I’ve set my ccols and clevs correctly.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers, Mike<o:p></o:p></p>
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