This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
>From: Erick Lorenz (address@hidden) <address@hidden> >Organization: UC Davis >Keywords: 199912100033.RAA06506 ldm-mcidas Erick, re: LDM-MCIDAS? >Sorry I was just trying to refer to the whole system of LDM and McIDAS >rather than to a specific package. No problem. re: 'xcd_run HRS' entry in ~ldm/etc/pqact.conf >This was already not commented OK. re: decinfo.k SET DMGRID ACTIVE >I did this as you suggested >I see some GRIDnnnn files showing up with today's date. Is this what I >should be looking for? Yes. I took a quick at your GRID files (via ADDE) and saw that the the XCD decoders are working. >I have tried using the F-Keys menu to display model data but so far >I am getting no results. There are a couple of things here. The Fkey menu actions are setup to access gridded data in ADDE datasets RTGRIDS/NGM-UW and RTGRIDS/AVN-UW. The GRID files that would compose these datasets are the ones that were removed from the Unidata-Wisconsin broadcast back on July 1. The latest version of the Fkey menu allows you to change the GRID datasets you point at for these menus, but not all of the grid fields that were accessible from the UW broadcast files will be available (since some like the 250 mb wind speed grids were created by PostProcessing after the broadcast GRID was received). There are two options here: o point at XCD-produced datasets o recreate the NGM-UW and AVN-UW datasets from XCD-decoded grids on your system To point at XCD-produced GRID datasets, you would do: TE ?MODEL1 "RTGRIDS/NGM TE ?MODEL2 "RTGRIDS/AVN from the McIDAS session for each/every user. Then when you go to put up loops of gridded fields from the Fkey menu F3 and F4 actions, you should get plots. What will be missing, however, is the ability to do the cross sections in Fkey menu action F5. The reason for this is that the grid cross section plotter in McIDAS has not been ADDEized yet. To get information on how to create the NGM-UW and AVN-UW datasets, you should read the information header of the script 'uwgrid.sh' which will be located in the ~mcidas/workdata directory. The tricky part in running this script from cron is setting the times that it runs so that the needed input GRID files are available to produce the new output GRID files. >I thought to use GRDLIST to check for available >data but I don't know how to name the dataset. You can see what is setup on a Unidata ADDE by looking at: o LSSERVE.BAT (a copy of DSSERVE.BAT) in ~mcidas/data o RESOLV.SRV in ~mcidas/workdata (entries created by LSSERVE.BAT entries) If you knew that the grid dataset was named RTGRIDS (it is in the default setup we send out in DSSERVE.BAT), you could see the various possible types of grids by running: DATALOC ADD RTGRIDS atm25.ucdavis.edu DSINFO GRID RTGRIDS You could then list grid file information for a particular gridded dataset using the GRDLIST command. For example, here is the output from my session looking at your machine: DSINFO GRID RTGRIDS Dataset Names of Type: GRID in Group: RTGRIDS Name NumPos Content ------------ ------ -------------------------------------- ALL 500 Real-Time Grids AVN 80 Real-Time AVN Grids ECMWF 10 Real-Time ECMWF Grids ETA 40 Real-Time ETA Grids MDR 10 Real-Time MDR Grids MISC 10 Other Real-Time Grids MRF 100 Real-Time MRF Grids MRF-UW 2 MRF Grids in UW stream NGM 40 Real-Time NGM Grids NGM-UW 2 NGM Grids in UW stream RUC 80 Real-Time RUC Grids DSINFO -- done GRDLIST RTGRIDS/ETA.ALL FORM=FILE DATASET NAME: RTGRIDS/ETA Dataset Position Creation Date Max Grids Directory Title ---------------- ------------- --------- ------------------------------- 24 1999344 2000 ALL 18Z ETA 0 HR<=VT<=24 HR 34 1999344 2000 ALL 18Z ETA 24 HR< VT<=48 HR GRDLIST - done The above shows that you have 18Z ETA runs for forecasts from 0 to 48 hours. Actually, it shows that the files exist; it doesn't show what is actually in the files. For this you can use a GRDLIST invocation like: GRDLIST RTGRIDS/ETA.24 NUM=ALL Dataset position 24 Directory Title= ALL 18Z ETA 0 HR<=VT<=24 HR PAR LEVEL DAY TIME SRC FHOUR FDAY FTIME GRID PRO ---- --------- ------------ -------- ---- ----- ------------ -------- ----- ---- Z SFC 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 1 LAMB Z 1000 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 2 LAMB Z 975 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 3 LAMB Z 925 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 4 LAMB Z 900 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 5 LAMB Z 875 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 6 LAMB Z 950 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 7 LAMB Z 850 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 8 LAMB Z 750 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 9 LAMB Z 825 MB 10 DEC 99344 18:00:00 ETA 0 10 DEC 99344 18:00:00 10 LAMB ... (there were 343 grids in this list, so I truncated the output). >If this procedure is all I need to get model files then I don't see >the need to go over the other stuff for now. OK. >I didn't know about the >SET DMGRID command and in poring over the documentation about decoders >I thought I saw something that suggested that that was what I needed. This information is contained in the online documentation. >so I downloaded the decoders file and tried to install it with the >problems that I mentioned. Right. >Thank you You are welcome. Tom