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as the DBMS sqlite is part of the android universe, it may be possible to use the spatial extension spatialite, which has it's own spatial index to query vector data in a given extent. Possibly a starting point: How to build Android spatialite?


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The problem was i was not setting the barrier spatial reference the same as the map's spatial reference


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When you say GPS i am assuming you mean in a state plane or utm? I would suggest creating a php webpage using the proj4 library. You can create a php/js page that will allow the input of N,E points as a single point entered by the user or in a batch of points in csv format and it will output it the lat/long coordinates. I have a webpage that can be found at ...



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