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Comments (6)

lansalot avatar lansalot commented on September 10, 2024

I think those are the raw, uncooked values. In the AOG code, you'll find the calculations used to convert them. It's in AOG somewhere, but was easier for me to find in the Wireshark LUA dissector I wrote:

image

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chriskinal avatar chriskinal commented on September 10, 2024

Not sure what is meant by "raw, uncooked" values. The OGI box contains the correct GPS coordinates as delivered by the GPS via the GGA NMEA sentence. The AgIO GUI seems to multiply them by 100 but butchers everything after the decimal point.

I believe the LAT display should show 32.3542691 not 32.5904485.

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lansalot avatar lansalot commented on September 10, 2024

Found the code, it's here:
https://github.com/farmerbriantee/AgOpenGPS/blob/master/SourceCode/AgIO/Source/Forms/NMEA.Designer.cs

ParsePANDA and ParsePAOGI methods. It explains it there - it's the conversion from Degrees to Decimal Degrees I think? It's not as simple as shifting the decimal along.

image

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chriskinal avatar chriskinal commented on September 10, 2024

Got it.

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chriskinal avatar chriskinal commented on September 10, 2024

After seeing the conversion code the values are correct. Thanks Iansalot.

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mirh avatar mirh commented on September 10, 2024

One could also argue it's a bit disturbing to have different latitude and longitude string orders depending on the screen you open.

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