[gradsusr] Current Date in GrADS.

[Rick Danielson]

Hi Marie,

In a grads script try executing a separate script (say, "date.formatted")
that runs an operating-system command (on linux it might work like this):

   "!~/bin/date.formatted"
   ret = read(grads.print.date)
   "!rm grads.print.date"

   status = sublin(ret,1)
   if (status != 0)
     say 'error reading grads.print.date'
   endif
   today = sublin(ret,2)

where the separate script produces a temporary text file
(grads.print.date) in the current directory that contains the
date of interest.  Again on linux, this "date.formatted" command
would be placed with other executables in the $PATH) and might
contain an operating-system command like this:

date +"%y-%m-%d-%H-%M-%S" > grads.print.date

Note that if your operating system provides a command to generate
today's date, you can often tailor it to produce whatever format might
be useful inside a grads script.  If you're reading between the lines
here, the message is use the right operating system...;)

Cheers,
Rick


On 07/05/2013 03:12 PM, Marie Staerk wrote:
> Hello,
>
> I wonder if there is any simple way to automatically get the current 
> date in GrADS?
> I want to create a script which uses the latest gfs data whithout 
> having to specify the time i.e. automatically uses the current date.
>
> For example I want to write something like this: @ sdfopen 
> http:\\nomads.ncep.noaa.gov:9090/dods/gfs$YYYYMMDD/gfs_00z, where 
> $YYYYMMDD represents the current date.
>
> Kind Regards
> Marie
>
>
>
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> gradsusr at gradsusr.org
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