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20050120: Unidata McIDAS-XCD Trouble

>From: "James T. Brown" <address@hidden>
>Organization: Michigan State University
>Keywords: 200501201933.j0KJXOv2020815 McIDAS-XCD

Hi Jim,

>I am trying to get the XCD decoders to work properly, but not having
>much luck with the MDXX files. The decoders seem to be running and MDXX
>files are being created, but it doesn't appear that the data is being
>written correctly.  When trying to plot data using McGUI, little to no
>data is ever displayed.

Did you create ADDE datasets from the data that is being produced?  In
a nutshell, the pieces of getting McIDAS to access data created by XCD
are (I list the steps just to make sure that you didn't leave out any

- register as a Unidata user

- download the distribution into the 'mcidas' account

- set the McINST_ROOT enviornment variable (typically /home/mcidas if
  this is the HOME directory of the user 'mcidas')

- unpack the distribution

- CD to the McIDAS source directory

  cd mcidas2004/src

- build the distribution:

  make all                   <- builds McIDAS-X and McIDAS-XCD

- install the distribution:

  make install.all

- setup file REDIRECTions that tell McIDAS where to read/write data

<as 'mcidas'>

cd ~mcidas/data
<edit LOCAL.NAM and set the directories to match your setup>

cd ~mcidas/workdata
redirect.k REST LOCAL.NAM

- copy files from the McIDAS distribution to the directory in which
  you want to run XCD and ldm-mcidas decoders.  Example assuming that
  the output data directory is /data/ldm/mcidas:

<as 'mcidas'>

cd ~mcidas/workdata
te.k XCDDATA \"/data/ldm/mcidas

cp ~mcidas/data/SCHEMA /data/ldm/mcidas
cp ~mcidas/data/SYSKEY.TAB /data/ldm/mcidas
cp ~mcidas/workdata/ROUTE.SYS /data/ldm/mcidas

cd /data/ldm/mcidas

mkdir bufr grib

- copy the XCD run script (xcd_run) to a directory in the PATH of the
  user running the LDM (typically ~ldm/util or ~ldm/decoders)

- edit the XCD run script and set variables to match your setup (may
  require no modification)

- configure the LDM ~ldm/etc/ldmd.conf file to run the XCD run script:

  exec  "xcd_run MONITOR"

- configure the LDM ~ldm/etc/pqact.conf file to run the XCD decoders
  through the XCD run script:

IDS|DDPLUS      .*      PIPE
        xcd_run DDS
HDS     .*      PIPE
        xcd_run HDS

- setup data scouring for McIDAS-XCD produced data files: run the mcscour.sh
  script from cron for the user running the LDM; copy mcscour.sh from
  ~mcidas/workdata to a directory in the PATH of the user running the LDM.

- run the XCD setup BATCH scripts as 'mcidas'

<as 'mcidas'>

cd ~mcidas/workdata
batch.k XCD.BAT
batch.k XCDDEC.BAT

- optionally enable decoding of GRIB data into McIDAS GRID format (warning:
  this takes a lot of disk space):


- stop and restart the LDM

You should be at this point.  You are not, however, finished yet:

- create ADDE datasets for the data that will be decoded by XCD and
  ldm-mcidas decoders:

<as 'mcidas'>

cd ~mcidas/data

edit LSSERVE.BAT and change anything you need to change; NOTE that you
may need to make modifications in LSSERVE.BAT to match where you setup
ldm-mcidas decoders to create output files!  Also, if you are ingesting
and saving NEXRAD Level III radar data, you should change the lines
in LSSERVE.BAT that reference a NEXRAD.CFG file:


cd ~mcidas/workdata
<edit MSUNEXR.CFG to set DIRMASK and FILEMASK to regular expressions that
match the directory(ies) and file names for your NEXRAD Level III data files)

batch.k LSSERVE.BAT           <- *** this creates McIDAS ADDE datasets

- setup the remote ADDE server (for access by non-'mcidas' users, this
  is the easiest way to configure for multiple users)

>I built the software on a Sun-Blade 1000 running Solaris 9 (SPARC). The
>LDM is running also running on a Sun-Blade 1000 with Solaris 9 (SPARC)
>- the McIDAS software is accessed via NFS (The ADDE server and LDM are
>on two separate machines, but the McIDAS data directory is on the same
>machine as the LDM).

Since the data is being decoded, it is most likely that the only
thing left to be done is the creation of ADDE datasets.  See above.

>I am not real sure where to begin...
>1) XCD Processes Are Running:
>% ps -ef | grep inge | grep -v grep
>ldm 12917 12889 5 13:39:33 ? 0:38 ingetext.k DDS
>ldm 12889 12878 0 13:39:31 ? 0:00 ingetext.k DDS
>ldm 12888 12878 0 13:39:31 ? 0:00 ingebin.k HRS
>ldm 12916 12888 1 13:39:33 ? 0:03 ingebin.k HRS
>% ps -ef | grep start | grep -v grep
>ldm 12879 12876 0 13:39:31 ? 0:00 startxcd.k
>ldm 12918 12879 0 13:39:33 ? 0:00 startxcd.k

Looks good.

>2) Sample Contents of Data Folder (/data/mcidas):
>% date
>Thu Jan 20 13:59:30 EST 2005
>% ls -lm MD*
>-rw-rw-r-- 1 ldm wx 49999236 Jan 20 13:39 MDXX0009
>-rw-rw-r-- 1 ldm wx 338536 Jan 20 06:30 MDXX0010
>-rw-rw-r-- 1 ldm wx 44560 Jan 19 18:49 MDXX0019
>-rw-rw-r-- 1 ldm wx 151312 Jan 20 02:53 MDXX0020
>-rw-rw-r-- 1 ldm wx 16640 Jan 19 18:49 MDXX0029
>-rw-rw-r-- 1 ldm wx 112752 Jan 20 13:38 MDXX0030
>-rw-rw-r-- 1 ldm wx 8007456 Jan 20 13:59 MDXX0059
>-rw-rw-r-- 1 ldm wx 887448 Jan 20 06:51 MDXX0060
>-rw-rw-r-- 1 ldm wx 5951016 Jan 20 01:45 MDXX0069
>-rw-rw-r-- 1 ldm wx 17360 Jan 20 13:37 MDXX0070

Looks OK, but some of the data files look awfully small.

>% ls -lm *XCD
>-rw-rw-r-- 1 ldm wx 17418960 Jan 19 18:59 DD050190.XCD
>-rw-rw-r-- 1 ldm wx 2147483647 Jan 20 13:59 DD050200.XCD
>% ls -lm ZZ*IDX
>-rw-rw-r-- 1 ldm wx 811008 Jan 19 18:59 ZZ05019.IDX
>-rw-rw-r-- 1 ldm wx 396951552 Jan 20 13:59 ZZ05020.IDX
>% ls -lm SCHEMA
>-rw-rw-r-- 1 ldm wx 465408 Jan 19 18:10 SCHEMA
>% ls -lm SYSKEY.TAB
>-rw-rw-r-- 1 ldm wx 24000 Jan 20 02:53 SYSKEY.TAB
>There are a number of *IDX files and time stamps on many of those files
>indicate that data is being captured.

Looks OK.

>3) PTLIST Output:
>Pos Description Schema NRows NCols Proj# Created DataDate
>------ -------------------------------- ------ ----- ----- ----- ------- 
>9 SAO/METAR data for 19 JAN 2005 ISFC 72 7000 0 2005019 2005019
>10 SAO/METAR data for 20 JAN 2005 ISFC 72 7000 0 2005020 2005020
>19 Mand. Level RAOB for 19 JAN 2005 IRAB 8 1500 0 2005019 2005019
>20 Mand. Level RAOB for 20 JAN 2005 IRAB 8 1500 0 2005020 2005020
>29 Sig. Level RAOB for 19 JAN 2005 IRSG 16 6000 0 2005019 2005019
>30 Sig. Level RAOB for 20 JAN 2005 IRSG 16 6000 0 2005020 2005020
>59 SYNOPTIC data for 19 JAN 2005 SYN 8 6500 0 2005019 2005019
>60 SYNOPTIC data for 20 JAN 2005 SYN 8 6500 0 2005020 2005020
>69 PIREP/AIREP data for 19 JAN 2005 PIRP 24 1500 0 2005019 2005019
>70 PIREP/AIREP data for 20 JAN 2005 PIRP 24 1500 0 2005020 2005020
>ptlist.k: Done

Hmm...  So, it looks like you _do_ have ADDE datasets setup.  Since
you can list the datasets using PTLIST, you should be able to view
their contents through the MCGUI.

>4) XCD Status:
>When running "statdisp", the "DDS" and "HRS" data source entries are
>listed in white letters and continually update. The decoders listed in
>the bottom section of the sreen are all listed in red letters.
>Here is recent output from "stat.k":
>% stat.k
>Decoder Status Display 2005020 190404
>## Src Ingestor Time Byte Index Index file Origin Wmo Product
>-- ---- -------- ------ ----------- ------- ----------- ------ ---- -------
>1 DDS INGETEXT 190358 60604080 99392864 ZZ05020.IDX Â?Â?Â?Â? Â?Â?Â?Â?
>4 HRS INGEBIN 190358 7308507 HRS.SPL
>GridF/ Grid
>## Decoder Time Begptr Lasptr MD Row Col Text Index
>-- -------- ------ ------- ------- ------ ---- ----- ------------ -------
>1 SAODEC *234623 15056 202720 9 ZZ05019
>2 RABDEC *234623 15072 202720 ZZ05019
>3 SYNDEC *234623 14944 202720 59 8 ZZ05019
>5 *185333 9882835298828352 ZZ05020
>7 PIRDEC *234623 15232 202720 ZZ05019
>14 *185333 9882835298828352 ZZ05020
>15 *185333 9882835298828352 ZZ05020
>stat.k: Done

Moduolo the non-printable characters, this looks OK.

>The information also seems to indicate that the MDXX files are not
>being updated properly. especially the MDXX files that should be
>created by the SAODEC decoder. There are no obvious errors being
>reported in the "ldmd.log" and "xcd_start.log" files.

The PTLIST listing above shows that it can access the data through
correctly defined ADDE datasets.  What does a listing of data look


>I have built the Unidata-XCD decoders twice and still haven't corrected
>the problem.  I also have the LDM-McIDAS decoders installed (pnga2area)
>and those seem to work just fine. The McIDAS packages also seems to run
>properly - I am only having trouble with the XCD decoders.

I don't think it is a decode problem.

>Do you have any suggestions on what I may try to troubleshoot? Are
>there any other decoders that can be used to create the MDXX files that
>are referred to by the RTPTSRC group?

Run the PTLIST command and let me know the results.

>We are hoping to use the MDXX files and MCGUI for instructional
>purposes. If I am unable to get the XCD decoders to work properly, I
>will reconfigure the McGUI to point to a remote ADDE server, but since
>I have access to IDD, it would be nice to setup a local ADDE server for
>our instructional lab and users throughout my Department.

I agree.

>I am sure I am overlooking some simple step, but seem to be stuck at
>the moment.  Again, data seems to be coming in, but I am not sure the
>MDXX files are being written to properly. If they are, I am unable to
>access using McGUI. This doesn't appear to be a McGUI problem because I
>am able to plot if I point to a remote ADDE server.

Can I get on your system as 'mcidas' to take a quick look?

>By the way, speaking of remote ADDE servers - There seems to be a list
>of sites available in the "Configure | ADDE Dataset Location" menu of
>the McGUI application. Is permission recommended before accessing
>remote ADDE servers?

No.  These are servers that owners have allowed general access to
for the Unidata community.

>I have a faculty member that would like to access
>data from the RTPTSRC group next week and if I am unable to get things
>to work locally, I may need to have her point to a remote ADDE server.

It really does sound like you setup everything correctly.  I guess
that the quickest thing would be for me to login and look around
to see what I can see.  If you setup the ADDE remote server for your
machine, I could try out access to the data from here; this may point
out some problems, and, then again, it might not.


No worries.


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