Datalog is recorded continuously and stored in device's internal storage (size is capped at ~20MB)
Datalog holds only the most recent data, older data are overwritten; contents may be deleted upon app update due to internal changes
to persist data permanently users must perform a manual save
Datalogging activity layout
Sample timestamp - date and time of current data sample, the value on the right shows current timeline scale
Playback control bar - allows you to seek through current datalog and play it in real time
Parameter list - show parameter list, parameters can be quickly filtered using the filter chip group located in the upper part of the list
Pop-up menu - show pop-up menu with actions
Pop-up menu
Live mode - show parameter values in real time as they're being recorded
Map - show Google map
Auto zoom & center - automatically zoom and center Google map based on currently displayed datalog
Refresh log - refresh datalog display buffer with the most recent data
Clear log - clear temporary datalog file
Help - show online guide
Alarm - show areas where the parameter values trigger alarm
Save - store selected datalog range as a permanent file (for more details watch the video demonstration below)
Load → open file (short press the file name)
Load → delete file (long press the file name to bring up an action menu with the "delete" button)
Load → Export
long press the file name to bring up an action menu with the clickable "export" icon
export file as:
.HLOG file - app proprietary binary format, this file can't be opened by other programs and is meant only for storage purposes or for data transfer between two app instances
.CSV file - 3rd party standard text format, this file can be opened by other programs (spreadsheet viewers etc.), however the app does not support the import of this format
parameters - define what parameters you wish to export
interval [ms] - temporal data resolution, i.e. interval in milliseconds at which the app will generate a data frame, which represents a single line record in the .csv file, the lower the interval the more lines will be generated and file size will increase linearly
Load → Import - import file (proprietary .hlog file only, 3rd party file import is not supported)
Gestures
swiping horizontaly moves current datalog position forwards or backwards on the timeline, swiping vertically scrolls datalog vertically
