(2018-03-10, 03:31 PM)affinite Wrote: Does anyone know how to convert Latitude and Longitude from "Degrees,Decimal Degrees" as output by SignalK to "Degrees,Minute,Dec Minutes" ?
Node Code would be great if you have it
Thanks
OK so after several hours with google I have put together two (crude) nodes. One for Latitude and one for Longitude
They convert Degrees/Decimal Degrees (as per signalK key) to Degrees/Minutes/Decimal Minutes (to 3 decimal places)
Tests for N/S E/W and inserts "N/S" or "E/W" as appropriate
If you see any mistakes or errors please let me know
Code
[{"id":"7448e190.e1747","type":"function","z":"115f1f92.45423","name":"navigation.position.latitude","func":"var signalk_key=\"navigation.position\";\n\nif(msg.payload.hasOwnProperty(signalk_key)){\n msg.payload=msg.payload[signalk_key][\"latitude\"];\n return msg;\n}","outputs":1,"noerr":0,"x":660,"y":360,"wires":[["6c49fa30.7cdf74"]]},{"id":"3e5cb9e9.62a0c6","type":"ui_text","z":"115f1f92.45423","group":"251f77ed.6b1808","order":1,"width":"4","height":"1","name":"Latitude","label":"<font size=\"5\">Lat","format":"<font size=\"6\">{{msg.payload}}","layout":"row-spread","x":1140,"y":360,"wires":[]},{"id":"6c49fa30.7cdf74","type":"function","z":"115f1f92.45423","name":"Convert Latitude Format","func":"var degDecimaldeg = msg.payload;\nif (degDecimaldeg >0) NS=\"N\" ; else NS=\"S\"\nvar degrees = parseInt(degDecimaldeg);\nvar decimalDeg = degDecimaldeg - degrees;\nvar minutes = decimalDeg*60\nvar minutes3dp = minutes.toFixed(3)\nvar deg = degrees.toString()\nvar deg = deg.replace(\"-\", \"\")\nvar min = minutes3dp.toString()\nvar min = min.replace(\"-\", \"\")\nmsg.payload = deg + \"\\u00B0\" + \" \" + min + \"' \" + NS\nreturn msg;","outputs":1,"noerr":0,"x":930,"y":360,"wires":[["3e5cb9e9.62a0c6"]]},{"id":"c027394d.fb7458","type":"ui_text","z":"115f1f92.45423","group":"251f77ed.6b1808","order":2,"width":"4","height":"1","name":"Longitude","label":"<font size=\"5\">Long","format":"<font size=\"6\">{{msg.payload}}","layout":"row-spread","x":1140,"y":400,"wires":[]},{"id":"d1da8bed.1bc3c8","type":"function","z":"115f1f92.45423","name":"Convert Longitude Format","func":"var degDecimaldeg = msg.payload;\nif (degDecimaldeg >0) WE=\"E\" ; else WE=\"W\"\nvar degrees = parseInt(degDecimaldeg);\nvar decimalDeg = degDecimaldeg - degrees;\nvar minutes = decimalDeg*60\nvar minutes3dp = minutes.toFixed(3)\nvar deg = degrees.toString()\nvar deg = deg.replace(\"-\", \"\")\nvar min = minutes3dp.toString()\nvar min = min.replace(\"-\", \"\")\nmsg.payload = deg + \"\\u00B0\"+ \" \" + min + \"' \" + WE\nreturn msg;","outputs":1,"noerr":0,"x":930,"y":400,"wires":[["c027394d.fb7458"]]},{"id":"49f0691d.a338d8","type":"function","z":"115f1f92.45423","name":"navigation.position.longitude","func":"var signalk_key=\"navigation.position\";\n\nif(msg.payload.hasOwnProperty(signalk_key)){\n msg.payload=msg.payload[signalk_key][\"longitude\"];\n return msg;\n}","outputs":1,"noerr":0,"x":660,"y":400,"wires":[["d1da8bed.1bc3c8"]]},{"id":"251f77ed.6b1808","type":"ui_group","z":"","name":"Position/Environment","tab":"68583212.87cb0c","order":3,"disp":true,"width":"4"},{"id":"68583212.87cb0c","type":"ui_tab","z":"","name":"Navigation","icon":"dashboard","order":3}]