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+--- Thread: Tracks shifted by about 500m eastward (/thread-2253.html)
Tracks shifted by about 500m eastward - Akira F - 24.07.2016
Hi
Thank you very much for developing a great software Routeconverter.
I am using it to draw tracks on a map from the GPS file created by a drive recorder.
However, recently the tracks drawn on the map were shifted by about 500m eastward as shown on the attached screen shots. I also attach the GPS file (nmea format, compressed in zip)).
I think this problem did not occur before early June.
It would be appreciated very much if this error could be corrected.
Akira F
Track160720.jpg (Size: 486.78 KB / Downloads: 1,071)
Track160720 enlarged.jpg (Size: 442.76 KB / Downloads: 1,069)
Track160720nmea.zip (Size: 177.29 KB / Downloads: 917)
RE: Tracks shifted by about 500m eastward - routeconverter - 24.07.2016
(24.07.2016, 07:17)Akira F Wrote: Thank you very much for developing a great software Routeconverter.
Dear Akira,
thank you very much for your posting. Makes me smile
(24.07.2016, 07:17)Akira F Wrote: However, recently the tracks drawn on the map were shifted by about 500m eastward as shown on the attached screen shots. I also attach the GPS file (nmea format, compressed in zip)).
I think this problem did not occur before early June.
There is a new feature in RouteConverter 2.18 that tries to automatically reverse map distortions for China. I choose a very simple definition for what China not is:
Code:
public static boolean outOfChina(double lat, double lng) {
if ((lng < 72.004) || (lng > 137.8347)) {
return true;
}
if ((lat < 0.8293) || (lat > 55.8271)) {
return true;
}
return false;
}You happen to have a track that is definitely outside of China but fails with my automatism.
There is a solution: turn the automatic fix off in Extras/Options/Map/Fix for China
RE: Tracks shifted by about 500m eastward - Akira F - 24.07.2016
Dear Christian
Thank you very much for your quick reply.
I tried the suggested solution, and it worked.
Thank you very much again.
Akira F