<div dir="ltr"><div>Thank you for doing this! I was going to play with both options myself, now I don't have to. Did you have the set any specific options to obtain 'the smallest data window possible' or does the grid dimension size option (1600) automatically do this?<br>
<br></div>Thanks again,<br>Sytske<br><div><div><div><div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><div>Sytske (seets-kah) Kimball<br>Professor of Meteorology</div>
<div>Director, South Alabama Mesonet<br>Dept. of Earth Sciences<br>University of South Alabama<br>Mobile, AL<br>phone (251) 460-7031 </div>
<div>fax (251) 460-7886<br>email <a href="mailto:skimball@usouthal.edu" target="_blank">skimball@southalabama.edu</a></div>
<div>web: <a href="http://chiliweb.southalabama.edu/" target="_blank">http://chiliweb.southalabama.edu/</a><div style="width:16px;height:16px;display:inline-block"> </div></div></div></div>
<br><br><div class="gmail_quote">On Fri, Sep 20, 2013 at 5:25 PM, Jeff Duda <span dir="ltr"><<a href="mailto:jeffduda319@gmail.com" target="_blank">jeffduda319@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">I can confirm that works. I see you have to select the output format in the WCT to be gridded netCDF 3 rather than native netCDF format, so you lose a little bit of fidelity by selecting the first option. It also appears that you get more of that fidelity back if you select the maximum grid count (1600 in my version) and the smallest data window possible that fits the relevant data in. This is shown by the attached images. In the one titled KTLX_2328Z_reflectivity_only_3.gif, the data were created using the lowest grid cell size option (0.0075), whereas in reflectivity_1600_zoom.png, the data were created using the largest grid dimension size option (1600).<div>
<br></div><div>Jeff</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Sep 20, 2013 at 4:32 PM, Sytske Kimball <span dir="ltr"><<a href="mailto:skimball@southalabama.edu" target="_blank">skimball@southalabama.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>It was level2 and I tried setting the Grid Cell Size in NOAA's WCT to a finer resolution than the default value. That did the trick!!<span><font color="#888888"><br>
<br></font></span></div><span><font color="#888888">Sytske<br><br><br></font></span></div><div class="gmail_extra"><div><br clear="all">
<div><div dir="ltr"><div>Sytske (seets-kah) Kimball<br>Professor of Meteorology</div>
<div>Director, South Alabama Mesonet<br>Dept. of Earth Sciences<br>University of South Alabama<br>Mobile, AL<br>phone (251) 460-7031 </div>
<div>fax (251) 460-7886<br>email <a href="mailto:skimball@usouthal.edu" target="_blank">skimball@southalabama.edu</a></div>
<div>web: <a href="http://chiliweb.southalabama.edu/" target="_blank">http://chiliweb.southalabama.edu/</a><div style="width:16px;min-height:16px;display:inline-block"> </div></div></div></div>
<br><br></div><div><div><div class="gmail_quote">On Fri, Sep 20, 2013 at 3:39 PM, Jeff Duda <span dir="ltr"><<a href="mailto:jeffduda319@gmail.com" target="_blank">jeffduda319@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Specifically which product did you convert? Was it level 2 or level 3 data?<div><br></div><div>Jeff Duda</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Sep 20, 2013 at 3:34 PM, Sytske Kimball <span dir="ltr"><<a href="mailto:skimball@southalabama.edu" target="_blank">skimball@southalabama.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Jennifer,<br><br></div>I agree. Not sure how that happened. I used NOAA's Weather and Climate Toolkit to convert the radar data to netCDF so maybe something went amiss in that process.<br>
<br></div>
Thanks for your help,<br>Sytske<br><br></div><div class="gmail_extra"><div><br clear="all"><div><div dir="ltr"><div>Sytske (seets-kah) Kimball<br>Professor of Meteorology</div>
<div>Director, South Alabama Mesonet<br>Dept. of Earth Sciences<br>University of South Alabama<br>Mobile, AL<br>phone (251) 460-7031 </div>
<div>fax (251) 460-7886<br>email <a href="mailto:skimball@usouthal.edu" target="_blank">skimball@southalabama.edu</a></div>
<div>web: <a href="http://chiliweb.southalabama.edu/" target="_blank">http://chiliweb.southalabama.edu/</a><div style="width:16px;min-height:16px;display:inline-block"> </div></div></div></div>
<br><br></div><div><div><div class="gmail_quote">On Fri, Sep 20, 2013 at 3:25 PM, Jennifer Adams <span dir="ltr"><<a href="mailto:jma@cola.iges.org" target="_blank">jma@cola.iges.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word"><br><div><div>On Sep 20, 2013, at 4:17 PM, Sytske Kimball wrote:</div><br><blockquote type="cite"><div dir="ltr">Jennifer,<br><br>Thanks for your response. Replies are added in below.<br>
<div><div class="gmail_extra"><br clear="all"><br><div class="gmail_quote">On Fri, Sep 20, 2013 at 3:03 PM, Jennifer Adams <span dir="ltr"><<a href="mailto:jma@cola.iges.org" target="_blank">jma@cola.iges.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="word-wrap:break-word"><br><div><div>On Sep 20, 2013, at 3:47 PM, Andrew Friedman wrote:</div>
<br><blockquote type="cite"><div>Hi Sytske,<br><br>In your script you have 2 plot settings right after each other:<br><br>'set gxout grfill'<br>'set gxout shaded'<br><br>I believe the second one overrides the first. Try commenting it out to see what the grfill plot looks like.<br>
</div></blockquote><div>That's right -- grfill will give a better view of actual grid box size. What does 'q ctlinfo' give you after you invoke sdfopen? </div></div></div></blockquote><div><br></div><div>The plot with 'set gxout shaded' commented out, is attached - not very nice looking...….<br>
</div></div></div></div></div></blockquote>True, but that pixelated nature of the data explains why your shaded plot looked even worse. </div><div><br><blockquote type="cite"><div dir="ltr"><div><div class="gmail_extra">
<div class="gmail_quote">
<div>
</div><div>'q ctlinfo' came back with the following:<br><br>dset KMOB_V03_20091110_035730.nc<br>title Nexrad 2 radar dataset 03:57:30 UTC 11/10/2009<br>undef -999<br>dtype netcdf<br>xdef 800 linear -127.06 0.0776505<br>
ydef 490 linear 20.4756 0.0776505<br></div></div></div></div></div></blockquote>Which is about an 8km grid. I'm guessing the radar data is much higher resolution than that. </div><div>--Jennifer</div><div><br></div><div>
<br></div><div><br><blockquote type="cite"><div dir="ltr"><div><div class="gmail_extra"><div class="gmail_quote"><div>zdef 1 linear 0 1<br>tdef 1 linear 03:57Z10NOV2009 1mn<br>vars 1<br>Reflectivity=>reflectivity 0 t,y,x Nexrad 2 radar dataset<br>
endvars<br><br> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="word-wrap:break-word"><div><br><blockquote type="cite"><div><br>Also, you could try changing the shaded plot setting to the higher-resoluttion algorithm:<br>'set gxout shade2b'<br></div></blockquote><div>
shade2b is not higher resolution -- it has more smaller polygons and takes longer to render. shade2 and shade2b should look exactly the same. </div></div></div></blockquote><div><br></div><div>'set gxout shaded' and 'set gxout shade2' look the same.<br>
<br></div><div>Sytske<br></div><div><br> <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="word-wrap:break-word"><div><div><br>
</div>
--Jennifer</div><div><br><blockquote type="cite"><div><br>Andrew<br><br>On Sep 20, 2013, at 12:23 PM, Sytske Kimball <<a href="mailto:skimball@southalabama.edu" target="_blank">skimball@southalabama.edu</a>> wrote:<br>
<br><blockquote type="cite">Dear GrADS users,<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">I (finally) managed to plot a NEXRAD radar reflectivity fil, in netCDF format, using GrADS. The plot is attached (IdaRadar-test.png) as is the original radar image for the same area, displayed using GRLevelII (RadarLevel2.png). I can't figure out why the resolution on the GrADS image is so much worse than on the original image. The script is also attached.<br>
</blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Any help would be much appreciated.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Thank you in advance,<br>
</blockquote>
<blockquote type="cite">Sytske<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Sytske (seets-kah) Kimball<br></blockquote><blockquote type="cite">Professor of Meteorology<br></blockquote>
<blockquote type="cite">
Director, South Alabama Mesonet<br></blockquote><blockquote type="cite">Dept. of Earth Sciences<br></blockquote><blockquote type="cite">University of South Alabama<br></blockquote><blockquote type="cite">Mobile, AL<br></blockquote>
<blockquote type="cite">phone (251) 460-7031<br></blockquote><blockquote type="cite">fax (251) 460-7886<br></blockquote><blockquote type="cite">email <a href="mailto:skimball@southalabama.edu" target="_blank">skimball@southalabama.edu</a><br>
</blockquote><blockquote type="cite">web: <a href="http://chiliweb.southalabama.edu/" target="_blank">http://chiliweb.southalabama.edu/</a> <br></blockquote><blockquote type="cite"><RadarLevel2.png><IdaRadar-test.png><StationPlot+<a href="http://radar2.gs/" target="_blank">radar2.gs</a>>_______________________________________________<br>
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--</div><div>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 <br><br></div><div><br></div>
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--</div><div>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 <br><br></div><div><br></div>
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<br></blockquote></div><span><font color="#888888"><br><br clear="all"><div><br></div>-- <br>Jeff Duda<br>Graduate research assistant<br>University of Oklahoma School of Meteorology<br>Center for Analysis and Prediction of Storms<br>
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