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David, Grid block filling isn't a feature of the grid programs, but I did use this method in my gprcm program which plots the 10km RCM data from the SDUS4x files. http://www.unidata.ucar.edu/packages/gempak/examples/gprcm/ Otherwise, If you had a true raster, you could paste a GINI header on the data and treat it as an image. Steve Chiswell Unidata User Support On Wed, 7 Feb 2001 address@hidden wrote: > Bob, > > FYI...I figured it out. The missing flag had to be changed from -0.01 to > -9999.00 in the "wmogrib1.tbl" and "wmogrib2.tbl" files. Now I get good > looking output that contains both zero and missing data. Thanks for your > help. > > On a related note. Is there a way to plot data in gempak grid files as a > raster (i.e., don't contour the data and then color fill it, but just color > fill each grid cell based on its value)? I played around with gdmap, > gdplot, and gdplot2 but couldn't figure it out. > > David > > Bob Rozumalski wrote: > > > David, > > > > I don't recall how I treated the missing vs no precip problem. > > I would contact Brett McDonald at HPC and ask how he handles > > the Stage 4 data. Brett has been working with these datasets > > longer than I have. > > > > Bob > > > > # > > #Bob, > > # > > #This may not be your area of expertise, but you mentioned that you've > > #worked with the 4 km stage iv precip data so I thought I'd see if you can > > #answer my gempak question. After I degrib the precip data into a gempak > > #file (using nagrib), I find that grid points without measurable > > #precipitation always assigned the value -0.01. Thus, I can't distinguish > > #between missing data and no precipitation. Any thoughts or comments on > > #what's happening here? It seems like this must be an nagrib problem. > > #Have you encountered this problem or heard of a solution? Thanks. > > # > > #David > > # > > ------------- End Forwarded Message ------------- > > --31d2_2d85-19a1_69d8-353c_3b54 > Content-Type: application/octet-stream > Content-Transfer-Encoding: 7bit > Content-MD5: wGoVdX1LBdmwEA4oAVUO2A== > Content-Disposition: attachment; filename="david.bright.vcf" > Content-Description: david.bright.vcf > X-Content-Name: david.bright.vcf > > begin:vcard > n:Bright;David > tel;fax:520.670.5167 > tel;home:520.797.8318 > tel;work:520.670.5156 x224 > x-mozilla-html:FALSE > url:www.wrh.noaa.gov/tucson/twc.html > org:National Weather Service;Tucson, Arizona > adr:;;520 N. Park Avenue Suite 304;Tucson;AZ;85719;USA > version:2.1 > email;internet:address@hidden > title:Science Operations Officer > x-mozilla-cpt:;0 > fn:David Bright > end:vcard > > --31d2_2d85-19a1_69d8-353c_3b54-- >