I\'开发者_运维问答m building a mobile mapping application and I want to store GPS Track data, waypoints etc in a database (SQL CE 4.0). This means I only have access to basic datatypes (http://msdn.mi
What dat开发者_如何学运维atypes are supported in SQL CE 3.5? Specifically can you use the Geography/Geometry types?Geospatial types are not supported.
Mongodb geo queries allows to query documents within some geometry (box, circle, polygon), but geomerty param is static.
Options $lat = \'25.7742658\'; $lng = \'-80.1936589\'; $miles = 30; Query SELECT *, ( 3959 * acos( cos( radians($lat) )
Currently, MongoDB supports only one geospatial index pe开发者_如何学Pythonr collection. How can I workaround this manually?
I have an SQLite database, which does not support trig functions.I would like to sort a set of la开发者_运维问答t,lng pairs in my table by distance as compared to a second lat,lng pair.I\'m familiar w
I\'m trying to query any locations within a specified distance from another location. The query is not the problem, but the distance returned by geography.STDistance is.
Quite a tricky one this, as the title suggests I need to work our which side of a polyline a point is.
I have a database full of zipcodes and their lat/long.What i want to do is to be able to cover the entire US in 75 mile radius circles with as little overlap as possible.Any hints or tips?My intention
I\'m working on asset tracking application. I have devices that send update on GPS position every ~5 minutes.
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