[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Support #HRQ-548094]: RE: real-time LDM feeds....



Hi Michel,

re:
> A while back, we have started using ldm to have our noaaport feed. (the mail 
> below may remind you something)
> 
> I have 2 questions for you :
> 
> 1- Do you maintain an exhaustive list of products available somewhere...

No, we do not.  The reason for this is contents of the NOAAPort broadcast
is not under our control.  Given the dynamic nature of the NOAAPort content, 
whatever
list we might be put together would be out of date literally the minute we 
posted
it.

> 2- I am asking that because we dont seem to be able to get this grib from ldm 
> ... 
> from pqact.conf
> 
> HRS     ^[YZ]..... KWB. ([0-3][0-9])([0-2][0-9]).*/mNAM
> FILE    data/GRIB/(\1:yyyy)(\1:mm)\1\2_nam.grb
> 
> Before trying to go back to the noaaport antenna and check if it available I 
> though you may have the
> answers I am looking for.

Since we send all of the products being sent over the NOAAPort broadcast in our
IDD datastreams, there should be no reason for you to go back to your NOAAPort 
reception
system to see if the products are being broadcast.  Instead, you can use the LDM
'notifyme' utility to see if the product you are looking for is available.

For instance, you could do the following:

1) if you know that the product you are looking for is in the HRS feed and
   you are sure that the pattern you have is correct:

<as 'ldm' on your IDD node>
notifyme -vxl- -f HRS -o 10000 -p '^[YZ]..... KWB. 
([0-3][0-9])([0-2][0-9]).*/mNAM' -h idd.unidata.ucar.edu

2) or, if you are not sure of the header but know that the product is from the 
NAM:

notifyme -vxl- -f HRS -o 10000 -p '/mNAM' -h idd.unidata.ucar.edu

3) or, if you are unsure of which feed the product is in, but you are sure that 
it
   is from the NAM:

notifyme -vxl- -f ANY -o 10000 -p '/mNAM' -h idd.unidata.ucar.edu

etc.

Also, you can tell notifyme to write its output to a disk file:

notifyme -vxl /data/ldm/inventory/products.hrs -f HRS -h idd.unidata.ucar.edu

You could let this 'notifyme' invocation run for a day or so and then look
through the list of products that are available to see if the field you want
is, in fact, in the datastream.

NB: the 'notifyme' invocations above are examples.  Please review the online
help for 'notifyme' or its man page in the LDM installation for information
on the various options you can specify.

If you find that the product you are interested in is being received/relayed
by the toplevel IDD relay node, idd.unidata.ucar.edu, but you are not receiving
it (done by not specifying a '-h' flag on the 'notifyme' invocation), please
review your LDM ldmd.conf 'request' lines to make sure that you are requesting
the appropriate set of data.  If you are requesting the data, but still not
receiving it (in our experience, this is unlikely), please let us know.

The other resource that you can take advantage of is the very active community
of LDM users/IDD participants.  You would do this by first subscribing to
our 'address@hidden' email list:

http://www.unidata.ucar.edu/support/mailinglist/mailing-list-form.html

(you must be subscribed to any list we maintain before you can post to it)

and then post your question.  It is our experience that there are LOTS of
experts in the community that might know the answer to your questions
and will respond immediately.

> Thanks for your attention and time

No worries.

Cheers,

Tom
****************************************************************************
Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
address@hidden                                   Boulder, CO 80307
----------------------------------------------------------------------------
Unidata HomePage                       http://www.unidata.ucar.edu
****************************************************************************


Ticket Details
===================
Ticket ID: HRQ-548094
Department: Support Datastream
Priority: Normal
Status: Closed