NMAP2 Loops of Objective Analyses

• To: <gembud@xxxxxxxxxxxxxxxx>
• Subject: NMAP2 Loops of Objective Analyses
• From: "Brent Shaw" <brent.shaw@xxxxxxx>
• Date: Mon, 11 Dec 2006 14:29:50 -0600

Hey all,



I am creating some hourly, 3-D objective analysis grids in real time in
GRIB-2 format, and then I am passing these into GEMPAK for real-time
viewing on NAWIPS/NMAP2.  Because this is a rather large volume of data
each hour (the grid is 448x320x31 with numerous variables), it is

This mostly works fine, except that within the NMAP2 application, I
cannot view more than 1 frame in a loop.  When I select the data set, I
can select any of the time for which I have files, but once I select
that time and a subsequent parameter to view, the time selector only
presents me with the data that is contained within the file I selected.
This is different behavior than image files and surface observation
files, where NMAP2 lets you "span" multiple GEMPAK files when selecting
the times to view.  Am I missing something in my configuration?  In my
datatype.tbl, I use this entry:



LAPS_US      $MODEL/laps               YYYYMMDDHH_laps_us.gem
CAT_GRD  SCAT_ANL    6   1440     -1      OFF/0/0      4



I thought the "SCAT_ANL" entry along with the time info would solve the
problem, but it doesn't.



I could partially get around this by dumping everything into a daily
file (it would probably be too big of a file though), but I think I
would still have the same problem right after the day changes (i.e., a
forecaster could not load a 00Z analysis from the latest daily file in
conjunction with some data from the previous days files as individual
frames in a loop).



I figure I could write some scripts that use gccfil/gdmod/gddelt to set
up a "circular" gempak file that always contains the last "n" hours of
grids, but that seems cumbersome if there is a way to configure NMAP to
span the grid files for times.  Any ideas?



Best regards,

Brent

• Follow-Ups:
  • RE: NMAP2 Loops of Objective Analyses
    • From: David Gold