[gradsusr] Plotting a NEXRAD netCDF file

Jennifer Adams jma at cola.iges.org
Fri Sep 20 16:03:15 EDT 2013


On Sep 20, 2013, at 3:47 PM, Andrew Friedman wrote:

> Hi Sytske,
> 
> In your script you have 2 plot settings right after each other:
> 
> 'set gxout grfill'
> 'set gxout shaded'
> 
> I believe the second one overrides the first. Try commenting it out to see what the grfill plot looks like.
That's right -- grfill will give a better view of actual grid box size. What does 'q ctlinfo' give you after you invoke sdfopen?  

> 
> Also, you could try changing the shaded plot setting to the higher-resoluttion algorithm:
> 'set gxout shade2b'
shade2b is not higher resolution -- it has more smaller polygons and takes longer to render. shade2 and shade2b should look exactly the same. 

--Jennifer

> 
> Andrew
> 
> On Sep 20, 2013, at 12:23 PM, Sytske Kimball <skimball at southalabama.edu> wrote:
> 
>> Dear GrADS users,
>> 
>> 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.
>> 
>> Any help would be much appreciated.
>> 
>> Thank you in advance,
>> Sytske
>> 
>> Sytske (seets-kah) Kimball
>> Professor of Meteorology
>> Director, South Alabama Mesonet
>> Dept. of Earth Sciences
>> University of South Alabama
>> Mobile, AL
>> phone (251) 460-7031
>> fax       (251) 460-7886
>> email   skimball at southalabama.edu
>> web:   http://chiliweb.southalabama.edu/ 
>> <RadarLevel2.png><IdaRadar-test.png><StationPlot+radar2.gs>_______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
> 
> 
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--
Jennifer M. Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030 





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