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manual:user_guide:maps_tools:offset:example

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 manual:user_guide:maps_tools:offset:example [2015/02/06 11:38]mstupka created manual:user_guide:maps_tools:offset:example [2015/11/06 14:55] (current) 2015/11/06 15:55 mstupka 2015/02/06 11:38 mstupka created Next revision Previous revision 2015/11/06 15:55 mstupka 2015/02/06 11:38 mstupka created Line 11: Line 11: * Save it again as a clearly named POI "B" * Save it again as a clearly named POI "B" * Measure rectangular distances between these points, i.e. in X,Y axes - most easily with the Guiding function or the Add new track and measuring fn. It displays the distance and azimuth. Then the angles and cardinal directions are calculated * Measure rectangular distances between these points, i.e. in X,Y axes - most easily with the Guiding function or the Add new track and measuring fn. It displays the distance and azimuth. Then the angles and cardinal directions are calculated - * Tap Menu > More > Map offset and set the offsets + * Tap Menu > More functions > Map offset and set the offsets ==== Example ==== ==== Example ==== Point A is correct, point B is incorrect. Point B is at a distance of 483 m from the point A in the azimuth of 118 degrees. We have to shift in rectangular ways according to longitude and latitude. Point A is therefore on the upper left, the point B on the lower right. Shift the Google map so that the the points overlay each other, i.e. northward and westward. When the azimuth is 118 degrees let's deduct the parallel (90 degrees) and we have 28 degrees at the point B. Total of angles in a triangle is 180°, we have a right angle 90° and calculated 28°. Remaining angle is 180 – 90 – 28 = 62°. For the shift to the North/South calculate the distance like this: distance = sinus of the B point angle x distance of the points, i.e. sin 28° x 483 = 226 m. Point A is correct, point B is incorrect. Point B is at a distance of 483 m from the point A in the azimuth of 118 degrees. We have to shift in rectangular ways according to longitude and latitude. Point A is therefore on the upper left, the point B on the lower right. Shift the Google map so that the the points overlay each other, i.e. northward and westward. When the azimuth is 118 degrees let's deduct the parallel (90 degrees) and we have 28 degrees at the point B. Total of angles in a triangle is 180°, we have a right angle 90° and calculated 28°. Remaining angle is 180 – 90 – 28 = 62°. For the shift to the North/South calculate the distance like this: distance = sinus of the B point angle x distance of the points, i.e. sin 28° x 483 = 226 m. 