Hi,
I am collecting data every 5 minutes from several remote stations to a base station via RF. The order of the data is frequently scrambled. For example, the 07:00 data will be listed before the 06:55 data. This happens at least once per hour. Thus far our group has been re-ordering the data manually to prepare it for reports.
Has anyone experienced this issue, and did you find a resolution?
Thanks
Data hole collection can result in out of order data. A hole exists when a radio packet was dropped because of interference. Loggernet will go back and get those missing pieces if Automatic Hole Collection is enabled. Since the data came in later, it appears out of order in the data file.
To completely eliminate out of order data, you would need to eliminate dropped radio packets completely. That is usually impractical.
My recommendation is to import your data into a database. It is simple for a database to reorder data based on the date. You can also easily set up a process to remove duplicate data within a database. The easiest way to get data from Loggernet into a database is with LNDB. The TOA5 format .dat files are not difficult to import into a database by other methods either.