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+--- Thread: NMEA 0183 sentences It has insufficient decimals to work with OpenCPN (/showthread.php?tid=247)
NMEA 0183 sentences It has insufficient decimals to work with OpenCPN - kste - 2016-12-17
With Openplotter 0.9.0 + RPI3 + BMP180
In OpenCPN the XDR or MDA sentenece is presumed to use Bar units as stated in forth part of the sentence: $IIXDR,P,1.011,B,Barometer,*a Here: 1.011, B = Bar.
In OpenCPN dashboard this value is transformed to view it as 1011 mBar or hPascal.
Now Openplotter 0.9.0 generates values with up to 2 decimal places, but for the pressure we need at least 3 decimals (best 5)
Now 1045.34 hPa become 1040hPa.
