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Good evening,
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<div class="">I am analyzing seasonal climate forecasts skill for the U.S. Great Plains, specifically Texas, Oklahoma, Kansas, and Colorado. So far I’ve been using lat/lon to define my study region. However, this rectangular box includes parts of Mexico and
the Gulf of Mexico that are outside my study region and which have extreme outliers that distort my results.</div>
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<div class="">To get more accurate results, I’d like to use a shapefile of my 4 states (<font face="Courier" class="">TX_OK_KS_CO.shp</font>, created in QGIS 2.18 from a U.S. states shapefile) to define my study region. However, I’m not sure how to interpret
and use the results I’m getting. I used “<font face="Courier" class="">ncl_convert2nc TX_OK_KS_CO.shp -nc2c</font>“ to create “<font face="Courier" class="">TX_OK_KS_CO.nc</font>“ .</div>
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<div class="">“<font face="Courier" class="">printVarSummary</font>(<span style="font-family: Courier;" class="">TX_OK_KS_CO.nc)</span>” and ”<font face="Courier" class="">PrintMinMax</font>“ of the x-coordinate (longitude) as well as y-coordinate (latitude)
look like this:</div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">Variable: shp</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">Type: file</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">File path:<span class="Apple-tab-span" style="white-space:pre">
</span>/home/States_shapefile_data/GADM/TX_OK_KS_CO.nc</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">Number of global attributes:<span class="Apple-tab-span" style="white-space:pre">
</span>11</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">Number of dimensions:<span class="Apple-tab-span" style="white-space:pre">
</span>5</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">Number of variables:<span class="Apple-tab-span" style="white-space:pre">
</span>4</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">(0)<span class="Apple-tab-span" style="white-space:pre">
</span>min=0 max=0</span></div>
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<div class=""><font face="Courier" class="">ncdump -h TX_OK_KS_CO.nc</font> returns this:</div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">netcdf TX_OK_KS_CO {</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">dimensions:</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>geometry = 2 ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>segments = 2 ;</span></div>
<div style="margin: 0px; font-size: 13px; line-height: normal; font-family: Courier; color: rgb(255, 255, 255); background-color: rgb(43, 102, 201);" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>num_features = 4 ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>num_segments = 262 ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>num_points = 102749 ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">variables:</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>int geometry(num_features, geometry) ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>int segments(num_segments, segments) ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>double x(num_points) ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>double y(num_points) ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">// global attributes:</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:segs_numPnts = 1 ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:segs_xyzIndex = 0 ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:geom_numSegs = 1 ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:geom_segIndex = 0 ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:geometry_type = "polygon" ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:layer_name = "TX_OK_KS_CO" ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:creation_date = "Mon May 22 17:20:46 EDT 2017" ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:NCL_Version = "6.4.0" ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:system = "Linux
<a href="http://ou.edu" class="">ou.edu</a> x86_64 #1 SMP Fri Mar 3 00:04:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux" ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:Conventions = "None" ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"></span>:title = "NCL: convert-OGR-to-netCDF" ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div>
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<div class="">I am not sure how to use this information, or if this is even the information I should be getting, to define the study region when extracting data from my global forecast dataset. I am fairly sure the shapefile is correct. Opening it again in
QGIS showed the four states with their outlines and filling, and nothing else.</div>
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<div class="">I appreciate any help!</div>
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<div class="">Thank you very much,</div>
<div class="">Toni</div>
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<div class=""><b style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">Toni Klemm</b><br style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">Ph.D. Candidate</span><br style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">The University of Oklahoma</span><br style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">South Central Climate Science Center</span><br style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">
</div>
<div class=""><span style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class="">phone: 405 325 1272</span></div>
<div class=""><span style="color: rgb(51, 51, 153); background-color: rgb(255, 255, 255);" class=""><a href="http://www.toni-klemm.de" class="">www.toni-klemm.de</a></span></div>
<div class=""><a href="https://www.eccforum.org" class="">Early Career Climate Forum</a></div>
<div class="">Twitter: <a href="https://twitter.com/ToniKlemm" class="">@toniklemm</a></div>
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