Bad Elf Flex: Logging Features

Bad Elf Flex: Logging Features

Logging Features


The Bad Elf Flex produces location data valuable for storage and analysis after field data collection. The logging feature, accessed from the main menu, allows you to store different types of GNSS data. You can also transfer data stored on the Bad Elf Flex and manage the logging projects.

The Bad Elf Flex records all data in the context of a project, a logical container of different types of GNSS data. You may use the default project (created when the Flex starts up) or create a new project at any time during operation. Each project may contain one or more of the following types of data.


  • Points - instant or timed in .CSV format

  • Tracklogs - points recorded continuously at the recording rate configured for this Bad Elf Flex in .CSV format

  • Raw data recordings - both the binary data from the Bad Elf Flex and a RINEX file. The typical use for either file type is GNSS data post-correction.

  • NMEA logs - a standard ASCII format produced by the GNSS engine. For more information see the NMEA 0183 standard.

  • Project metadata - a JSON file containing information describing the project contents, information identifying the Bad Elf Flex that made the recordings, and date/time information for the project data.


For details on the project container and data files contained therein, refer to the Data Storage Specifications section of this document.

Log Instant Point


An instant point records a location sample using the current GPS fix. If the Bad Elf Flex does not have a fix, then it does not record anything. When the Bad Elf Flex finishes recording the point, you’ll hear an audible tone. The Bad Elf Flex stores the resulting logged point in a .CSV file along with other logged points.


If you have not already created a project to contain the logged point, the Bad Elf Flex creates a project for you. You can create a new project using the Start New Project option as described below or by using the Bad Elf Flex app

Log Timed Point

The Bad Elf Flex can record a timed point by averaging the GPS fix over a specified time interval. The default time interval is 30 seconds, but you can adjust it as needed. The Bad Elf Flex stores the resulting timed point along with any other logged points in a .CSV file within the current project.

Actions:

  • Press enter button to start recording a timed point. You’ll see the time count down as recording proceeds. You’ll hear an audible tone once it completes.

  • If you press enter button while the timer is still counting down, the Bad Elf Flex cancels the recording and discards any data recorded so far.





Timed point menu item
Timed point recording status screen
Timed point options screen

Start/Stop Track Logging
A track log records a series of points at one-second intervals. The Bad Elf Flex stores each track log in its own separate .CSV file within the current project using the same format as point data. 

Actions:

  • Press enter button to start recording a tracklog. Once recording starts, you’ll hear an audible tone. Notice that the menu item changes to “Stop track logging.”

  • Press enter button again to stop recording. You’ll hear an audible tone, and the menu item reverts to “Start track logging.”




Start tracking menu item
Stop Tracking menu item

Start New Project

The Bad Elf Flex stores all point and log files in the context of a project. The Start new project option creates a new project with a name based on the current date and time. (You don’t need to explicitly start a new project before logging points and tracks, since the Bad Elf Flex will start one for you when you begin logging of any kind.)


If there is already an open project when you choose the Start new project option, the Bad Elf Flex stops any logging in progress and closes the current project. It then processes any raw logs in the project into RINEX.


Actions:

Press the enter button on the Start new project menu item to confirm the creation of a new project. You’ll hear an audible tone.


Start new project meu item

Manage Logs

The manage logs function allows you to view, delete, and export logs from the Bad Elf Flex. Selecting the all XX logs function shows the number of completed logs and an indication of any active logging session.

Actions (All Logs):

  • Press the options on the line listing All XX logs to view the all logs detail screen.

  • Press the enter button from the all logs details screen using the export all to USB option screen copy all of the logs to an external USB drive, if connected. Storing logs on an external USB drive does not remove the logs from the Bad Elf Flex.

  • Press the enter button from the all logs options screen using the delete all logs function to delete all logs stored on the Bad Elf Flex.

  • Press the back button to exit the all log options screen or the all log actions menu.


Actions (Individual Log):

  • Press the options on a specific log to view the log detail screen.

  • Press the enter button from the log project screen to show the log project action menu.

  • Press the enter button on the action export to USB to copy this specific project to an external USB drive. Storing a log on an external USB drive does not remove the log from the Bad Elf Flex.

  • Press the enter button on the action delete to delete this specific log from the Bad Elf Flex.

  • Press the enter button on the action Regenerate RINEX to rebuild all RINEX from raw data stored in this specific project.

  • Press the back button to exit the log project details screen or the log projects actions menu.





Manage logs - log listing
Manage logs - all logs detail screen
Manage logs - all logs actions menu



Manage logs - log details
Manage logs - log project action menu

For assistance, please contact our support team via support@bad-elf.com.


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