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Hi, re: > I'm new to ldm and I'm trying to configure it to access HRRR analysis data > from idd. I saw this email thread: > > https://www.unidata.ucar.edu/support/help/MailArchives/idd/msg06476.html > > But I'm not sure how pq.conf should be set up to retrieve the data. The process of one's local LDM being fed data products by one or more "upstream" LDMs is as follows: - download, build and install the latest version of the LDM - determine which data feed(s) have the data desired - edit the LDM configuration file, ~ldm/etc/ldmd.conf, with one or more REQUEST entries to request feeds of the data stream(s) desired to be received LDM configuration file REQUEST entries look like: REQUEST<tab>feed<tab>extended_regular_expression_pattern<tab>upstream.feed.ldm For instance, here is an entry that will request the HRRR data that you would see in the 'notifyme' invocation that you included in your inquiry: REQUEST NGRID "HRRR" idd.unidata.ucar.edu - add an EXEC entry to the LDM configuration file to process the products specified in the REQUEST line(s) added An LDM configuration file REQUEST line will look like: EXEC<tab>"pqact -f <feed> <LDM pattern-action file>" For example, an EXEC line for the HRRR data that would be REQUESTed by the example REQUEST line above would be: EXEC "pqact -f NGRID /usr/local/ldm/etc/pqact.conf_hrrr" - create the LDM pattern-action file with the action(s) you wish to have run by the 'pqact' instance that will be created from the EXEC line example above What you want to do with the data products you received is only limited by your imagination :-) As an example, however, try the following: # ===================================== # = HRRR model data available via IDD = # ===================================== # # --------------------------------------------- # - NCEP High Resolution Rapid Refresh (HRRR) - # --------------------------------------------- # # High Resolution Radid Refresh (HRRR) grid output from NCEP # Based on http://www.nws.noaa.gov/os/notification/tin14-28hrrr-aac.htm # # Forecast Grids # NGRID ^Y.C.* KWBY (..)(..).*F([0-9][0-9][0-9]) FILE /data/ldm/pub/native/grid/NCEP/HRRR/CONUS_2p5km/HRRR_CONUS_2p5km_(\1:yyyy)(\1:mm)\1_\200.grib2 # # http://www.nco.ncep.noaa.gov/pmb/docs/on388/appendixa.html # # Analysis Grids # NGRID ^Y.CA.* KWBY (..)(..) FILE /data/ldm/pub/native/grid/NCEP/HRRR/CONUS_2p5km_Analysis/HRRR_CONUS_2p5km_ana_(\1:yyyy)(\1:mm)\1_\200.grib2 Please not carefully: - the form of action entries in a pattern-action file is fixed: feedname<tab>extended_regular_expression <tab>action<tab>action_flags <tab>object_of_action So, the first action listed above (which does NOT have tabs where needed) can be read as: NGRID<tab>^Y.C.* KWBY (..)(..).*F([0-9][0-9][0-9]) <tab>FILE <tab>/data/ldm/pub/native/grid/NCEP/HRRR/CONUS_2p5km/HRRR_CONUS_2p5km_(\1:yyyy)(\1:mm)\1_\200.grib2 re: > I did notifyme -vl- -h idd.unidata.ucar.edu -f ANY -p "HRRR*" -o 36000 > > and see the following: > > 14015000.165444 NGRID 27127609 YTCA98 KWBY 140100 > !grib2/ncep/HRRR/#255/202008140100F000/TMP/2 m HGHT > 20200814T031038.825201Z notifyme[8513] > notifyme.c:notifymeprog_5:212 INFO 1594886 202008 > 14015000.917171 NGRID 27127610 YACA99 KWBY 140100 > !grib2/ncep/HRRR/#255/202008140100F000/DPT/1000 hPa PRES Excellent! Learning how to use the LDM utility 'notifyme' will make your job of configuring and monitoring your LDM MUCH easier as you go on! re: > I wonder if anyone can help provide a template "pq.conf" for retrieving the > data? I am assuming your "pq.conf" is a reference to an LDM pattern-action file. No worries, the name of the pattern-action file is not important. For convenience, however, it is best practice to store all pattern-action files in the LDM 'etc' directory, ~ldm/etc. Summary: The LDM operates in two semi-distinct parts: - getting and relaying data products - doing something with data products that have been received If you continue to have problems, please send us your LDM configuration and pattern-action files. Please send these as attachments, not as cut and paste listings since we can not check to see if there are any typos (e.g., spaces where tabs are required) in your entries. 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: NTO-640607 Department: Support IDD Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.