20040721: Selecting the latest satellite image

Nancy,

The best way to store the files for GEMPAK is to use the 
X_YYYYMMDD_HHNN format ao that the GUI programs can find
the data as well as your scripts. Examples are provided
in the $NAWIPS/ldm/etc/templates/pqact.gempak_images file.

To select the latest GOES10 IR file in a directory following 
the $SAT naming convention hierarchy, you could do:

(csh example)
cd $SAT/GOES-10/4km/IR
set LATEST=`ls | tail -1`

Then use the variable $LATEST in your script for the input to the
GEMPAK SATFIL parameter.

Steve Chiswell
Unidata User Support


On Wed, 2004-07-21 at 16:25, Nancy Selover wrote:
> I am trying to identify the latest satellite image (IR in this case),
> so I can call it up in a Gempak script to generate a *.gif image for a
> web page.  I don't know whether to have a copy of the latest image
> stored in a temporary subdirectory using pqact.conf, or whether to
> have the last 2 digits of the Mcidas area file (AREA13XX) saved into a
> file - then use that string to name the latest area file.  Is it
> preferable to use the AREA file name or the pointer (e.g.
> IR_20040721_1915) in sfmap to get the image?
> 
> Thanks for the guidance.  I'm not Unix fluent.
> 
> Nancy
> Nancy J. Selover
> Asst. State Climatologist
> Office of Climatology tel: 480-965-0580
> Arizona State University fax: 480-965-1473
> Tempe, AZ 85287-1508 e-mail: address@hidden
> 
>