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[GEMPAK #IRA-792189]: Fwd: [gembud] GEMPAK Docker Image

I believe that GEMPAK uses code from McIDAS to render raw level 2 and 3 NEXRAD 
files, and so GP programs are unable to re-project to anything other than the 
native projection in each file.

One known workaround is to use NEX2GINI or NEX2IMG with a single-entry 
nexrad.tbl file (in pwd) for the site you wish to render, output to any GEMPAK 
supported projection. Hopefully you can see how this can be done procedurally 
for all NEXRAD sites.

Another known workaround is to instead use the Python modules Matplotlib, 
Cartopy, MetPy, and python-awips to render level 3 images 

http://python-awips.readthedocs.io/en/latest/examples/generated/NEXRAD_Level_3_Plot_with_Matplotlib.html
https://unidata.github.io/MetPy/latest/examples/formats/NEXRAD_Level_3_File.html


> On Sat, Dec 9, 2017 at 9:28 AM, Derek Seymour <address@hidden> wrote:
> >
> >
> > I wanted to see if you knew of a way to specify a different projection
> > from the gpnids_gif program.  Below is part of the script I'm using to
> > convert NEXRAD NIDS data into GIF.  I'm tried changing the PROJ but haven't
> > been successful and I'm not sure what projection "rad" is using.
> >
> > gpnids_gif << EOF
> >  RADFIL   = ${FILENAME}
> >  RADTIM   = last
> >  PROJ     = rad
> >  AREA     = ${LAT1};${LNG1};${LAT2};${LNG2}
> >  GAREA    = ${LAT1};${LNG1};${LAT2};${LNG2}
> >  DEVICE   = gif|${GIFFILE}|${GIFWIDTH};${GIFHEIGHT}
> >  MAP      = 7/1/1 + 8/1/1
> >  \$mapfil = hicnus.nws+histus.nws
> >  LATLON   = 0
> >  PANEL    = 0
> >  TITLE    = 1/-2/${TITLE}
> >  TEXT     = 0.7//////sw
> >  COLORS   = 7=38:38:38;8=112:112:112
> >  LINE     = 2;3//2
> >  IMCBAR   = 0
> >  CLRBAR   = 0
> >  CLEAR    = y
> >  LUTFIL   = default
> >  STNPLT   = 5|0|disco_sites.tbl
> >  r
> >
> >  e
> > EOF
> >
> >
> > Or perhaps there's a different GEMPAK program I should be using.  My goal
> > is to quickly convert NIDS NEXRAD 3 data into georeferenced raster images
> > for use within mapping software.
> >
> > Thanks so much!
> >  - Derek
> >
> > On Wed, Dec 6, 2017 at 4:07 PM, Michael James <address@hidden> wrote:
> >
> >> Greetings GEMPAK users,
> >>
> >> I have published the latest Unidata GEMPAK 7.4.1 release as its own
> >> Docker image, available at
> >>
> >> https://hub.docker.com/r/unidata/gempak/
> >>
> >> To Run Containerized GEMPAK (on any Docker-supported host machine):
> >>
> >> 1) docker pull unidata/gempak
> >>
> >> 2) docker run --user gempak -it unidata/gempak:latest
> >>
> >> 3) from within the container you have GEMPAK programs available in $PATH,
> >> and an example script is supplied to show grid parameters from the latest
> >> "A2NAM" grid (defined in $GEMTBL/config/datatype.tbl and
> >> $GEMTBL/data-access/nam.xml to reference the 12km NAM domain), pulled from
> >> the cloud-based AWIPS EDEX server
> >>
> >> [gempak@1b075df3bed4 ~]$ ./rungempak.sh
> >>  GDFILE   = A2NAM
> >>  LSTALL   = YES
> >>  OUTPUT   = T
> >>  GDATTIM  = all
> >>  GLEVEL   = 750
> >>  GVCORD   = PRES
> >>  GFUNC    = TMPK
> >>  GEMPAK-GDINFO>
> >>  GRID FILE: AWIPSDB/nam.xml/171206/1200F000
> >>
> >>
> >>  GRID NAVIGATION:
> >>      PROJECTION:          LCC
> >>      ANGLES:                25.0   -95.0    25.0
> >>      GRID SIZE:              614     428
> >>      LL CORNER:            12.1900 -133.4590
> >>      UR CORNER:            57.3285  -49.4154
> >> ...
> >>  Number of grids in file: 21854
> >>  Maximum number of grids in file:  21854
> >>
> >>   NUM       TIME1              TIME2           LEVL1 LEVL2  VCORD PARM
> >> 10975     171206/1200F000                        750         PRES TMPK
> >>
> >> 11176     171206/1200F001                        750         PRES TMPK
> >>
> >> 11382     171206/1200F002                        750         PRES TMPK
> >>
> >> 11588     171206/1200F003                        750         PRES TMPK
> >>
> >> 11794     171206/1200F004                        750         PRES TMPK
> >>
> >> 12000     171206/1200F005                        750         PRES TMPK
> >>
> >> 12206     171206/1200F006                        750         PRES TMPK
> >> ...
> >>
> >
> >
> 
> 


Ticket Details
===================
Ticket ID: IRA-792189
Department: Support GEMPAK
Priority: Normal
Status: Open
===================
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