McIDAS Learning Guide
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Real-time Data Access - Getting Started
The exercise below will take you through the steps necessary
for setting up your client routing table to access real-time data. Once you
have real-time groups included in the client routing table, ADDE commands can
access data as soon it becomes available on the server machine.
Users who have LOGON credentials (initials and project number) that allow access to
the SSEC real-time servers should follow the instructions exactly as written. Remember that once you
have your client routing table set up to access real-time data from SSEC, any requests you make for
real-time data will be charged to the project number you use when you log on.
Please note that the DEMO 1234 credentials used elsewhere in this manual (for use with
the BLIZZARD datasets) are not sufficient for access to the SSEC real-time servers. Users who do not
have access to the SSEC real-time servers should contact their Site Coordinator (System Administrator)
for instructions on how to set up the client routing table. Once you have your table set up, you may
start your McIDAS session and go to the next section.
Remember, this chapter assumes that you are using the same dataset names as
those used at SSEC. If your dataset names are different, you may have to change
the dataset names in some of the commands.
- Start a McIDAS session.
- At the Unix prompt:
Your session should still be set for six frames from the last time you
changed the Configuration GUI. If not, set it for six frames,
as described in Getting Started.
- Type: mcidas
- Log on to the workstation.
- Type: LOGON initials
- Modify your client routing table so that commands requesting
data from a dataset in the group INFO are routed to the SSEC remote server
A listing similar to the following is displayed. The last line informs you
that commands requesting data from a group with the Server IP Address <LOCAL-DATA> are
routed to the local server.
- Type: DATALOC ADD INFO INFO.SSEC.WISC.EDU
Group Name Server IP Address
<LOCAL-DATA> indicates that data will be accessed from the local data directory.
- List all datasets of type TEXT in the group INFO.
A listing of all of the descriptor names in the group INFO is displayed.
The contents of any of these text datasets can be listed by using the READ
- Type: DSINFO TEXT INFO
- List the contents of the ADDE text dataset INFO/RTSERVER.
This text file (RTSERVER) lists general server information for each data
source. It also contains the DATALOC commands necessary to update your client
- Type: READ INFO/RTSERVER
- Download the RTSERVER text file to your machine.
The keyword DEV=T writes the standard text window output to the specified
file, in this case RTSERVER.BAT. The R option replaces the existing file,
if one does exist.
- Type: READ INFO/RTSERVER DEV=T RTSERVER.BAT
- Execute the text file as a batch job.
This runs all of the DATALOC commands listed in the RTSERVER.BAT file that
are not commented out with REM.
- Type: BATCH RTSERVER.BAT
- List your client routing table's groups and associated server
All of the real-time servers should be displayed, in addition to any group
names that were previously set up on your workstation.
- Type: DATALOC
- Run the DSINFO command
to list the datasets available in the RTGRIDS group.
The X is a placeholder that will list all of the data types in RTGRIDS. The
DSINFO command can be used with any of the groups listed in your client routing
- Type: DSINFO X RTGRIDS
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