Archiving Data Sets

Data Update Utility

The Data Update Utility enables you to update astro data sets including:

You can manually update one or more data sets or schedule a time and frequency for automatic updates.

For more information on Space Weather data, go to http://celestrak.com/SpaceData.

Running the Utility

To run the utility, select Data Update... from the Utilities menu.

The Data Update screen contains three tabs:

Astro Data

To configure automatic updates or perform a manual update, select the Astro Data tab. The grid shows the available Astro data sets, the date of AGI’s latest version, and the version that is on the local computer.

Manual Updates

To manually download updates for Astro data sets:

  1. For each data set that you want to update, select Update or select Check All to update all data sets.
  2. To store previous versions of a data set when a new version is downloaded, select Archive. For more information, see Archiving Data Sets.
  3. Click Update Now to download the updates.

The display will automatically refresh, showing the new versions on the local computer.

The color of the data set indicates its current status:

Note: You must have local administrator rights, or at least write access to the folders where the data sets are located.

Automatic Updates

To configure automatic updates:

  1. Select Enable Automatic Updates.
  2. For each data set that you want to automatically update, select Auto Update or select Check All to update all data sets.
  3. Select a Frequency. Choose Daily, Weekly or Monthly. With the exception of LeapSeconds.dat, AGI typically updates the data sets daily.
  4. Select a Scheduled Date/Time. Pick a time that the computer is likely to be turned on but when ODTK will not be running. If a date/time is chosen which is in the past, the frequency value will be added to that date/time to calculate the next scheduled date/time.
  5. To store previous versions of a particular data set, select Archive for that data set. For more information, see Archiving Data Sets.
  6. Click Ok or Apply for the changes to take effect.

Notes

Connection

To download data sets through a proxy server:

  1. Select Use Proxy and specify the appropriate FTP, Server, and Port information.
  2. If your internet access is via a firewall, select Requires Authentication and specify a proxy username and password. If you are unsure how your internet connection is configured, please consult your system administrator.

History

The History tab provides information about the activity of the Automatic Updates. It is useful to check this to diagnose problems, such as missing updates because ODTK was running.

The Delete History button permanently deletes the current history contents.

If an automatic update occurs while this tab is up, the tab is automatically refreshed.

Archiving Data Sets

The data set archive files are stored in the following folders:

The default ODTK user area is C:\Documents and Settings\All Users\Application Data\AGI\. The archived files are renamed to include the date they were created (for example, LeapSecond-7-13-2005.dat).

Archiving Disk Space Requirements

You need to consider how much disk space is available and how often you receive updates before using the archive feature. For example, one set of archive files for EOP, stkFluGeoMag and LeapSecond.dat requires about two megabytes of disk space.

ODTK 6.5