Alex Etchells
United Kingdom
, joined 21 Feb 2006
Latest articles
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GPS- Deriving British Ordnance Survey Grid Reference from NMEA data
by Alex EtchellsThe NMEA data exported by GPS units gives latitude and longitude and geometric distance above the WGS84 (GRS80) reference ellipsoid. The Ordnance Survey maps for Great Britain use grid references based on the Airy Spheroid (OSGB36) reference ellipsoid. The following article discusses a C# class to convert GPS derived NMEA data to the British Ordnance Survey Grid.
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Convert Decimal Integer Values to Binary String in VB6
by Alex EtchellsA small function to convert decimal integer values to a binary string. The number of bits can be optionally specified but this will be increased if insufficient.
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VB6 NMEA Interpreter Class for Reading GPS
by Alex EtchellsA VB6 version of Jon Person's .NET NMEA Interpreter Class as referenced in 'How to Write a GPS Application'. GPStest.zip contains the class and a simple project demonstrating implementation.