NEWS.md

In obrl-soil/em38: Process N38 binary files from EM38-MK2 sensors

Version 0.0.6

• some under-the-hood corrections to work with recent R changes
• some improvements in handling data from certain GNSS receivers, many thanks to the person who supplied a test dataset :pray:
• updated vignette, various methods of spatially interpolating the raw data are now demonstrated

Version 0.0.5

• package now reports orthometric height of each spatialised reading, calculated from GPS data, per user request (thanks dukarvat!). Note that elevation data may still need further correction to a local vertical datum before use.

Version 0.0.4

• package can now handle GPS messages from GLONASS, GALILEO, and multi-GNSS systems

Version 0.0.3

• Update for compatibility with newer versions of units

Version 0.0.2

• Bugfix for GH-1 comment processing, many thanks to sanjaykmenon for providing test data

Version 0.0.1

• Major refactor - process survey lines separately, cope with missing/bad GPS data, better paired data handling
• Added em38_surveyline() which will process data from an individual survey line output by n38_decode().
• Survey line decodes can now be sf or data.frame and include both timestamps and sequential ID.
• renamed em38_spatial() to em38_decode(), the function now outputs a list containing file header data and survey lines.
• renamed n38_to_points() to em38_from_file(), the output is identical to em38_decode()
• Survey lines are no longer filtered by dipole mode
• Added filters for GPS time delay and signal quality.
• Various small bugfixes

Version 0.0.0.9003

• n38_decode() better living through proper vectorisation - speed improvement.
• More unit tests.
• Package-level metadata.
• Travis-CI integration

Version 0.0.0.9002

• New em38_pair() - combines data from manual-mode surveys where horizontal and vertical readings have been taken at each station.
• Checksums on NMEA-0183 sentences are evaluated for $GPGGA type, failures are dropped.
• Who's got two thumbs and forgot about @keywords Internal? *gestures at self*. The help menu is less cluttered now.

Version 0.0.0.9001

• New n38_to_points() wrapper function - on-disk file to spatial points in one hit.
• n38_import() variable name fix; x is now path.
• em38_spatialise() now constrains out_mode values and fails gracefully when allowable values aren't supplied.
• Rebuilt demo data to match demo extdata.

Version 0.0.0.9000

• Basic functions: import N38 files, convert them to a nested list of raw() matrices, decode those, output an M38 file, output a spatial point dataset.
• Minimal testing for NMEA-0183 sentence parsing (just checks on lat and long extraction from string).

obrl-soil/em38 documentation built on Sept. 25, 2023, 10:01 p.m.