[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
20010207: grib stage iv precip
- Subject: 20010207: grib stage iv precip
- Date: Wed, 7 Feb 2001 15:32:07 -0700
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--
>