[OSM-talk] unkown coordinate encoding

immanuel.scholz at gmx.de immanuel.scholz at gmx.de
Mon Mar 27 21:32:51 BST 2006


Hi,

> <trkpt lat="44.477135" lon="26.114385">
...
> 219065058 and 373101418

Well. if there ratio fits, then they are linear dependend of the real 
latitude/longitude. So why "break" the coding? Just go out, measure some more 
points with your working unit and calculate 

factor1 = 373101418 / 44.477135
factor2 = 219065058 / 26.114385
factor3 = ...
...
factor = median(factor1, factor2, ...)

and then

lon = measured_first_uint * factor
lat = measured_second_uint * factor


Ciao, Imi.




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