Top "Geospatial" questions

pertaining to the geographic location and characteristics of natural or constructed features and boundaries on, above, or below the earth's surface; esp.

Converting from longitude\latitude to Cartesian coordinates

I have some earth-centered coordinate points given as latitude and longitude (WGS-84). How can i convert them to Cartesian coordinates (…

mapping geometry geospatial
Find nearest latitude/longitude with an SQL query

I have latitude and longitude and I want to pull the record from the database, which has nearest latitude and …

mysql sql coordinates geospatial
Given the lat/long coordinates, how can we find out the city/country?

For example if we have these set of coordinates "latitude": 48.858844300000001, "longitude": 2.2943506, How can we find out the city/country?

geolocation geocoding geospatial geo
Function to calculate geospatial distance between two points (lat,long) using R

I have geocoded points in long, lat format, and I want to calculate the distance between them using R. This …

r package geospatial distance latitude-longitude
How to Convert data frame to spatial coordinates

I have been working on earthquake data that has lat long values, and I want to convert those lat long …

r gis geospatial
Is there an API for openstreetmap?

I wonder if there is any API I could query OSM data through, for example; Are (lon_1, lat_1) at land …

api geospatial openstreetmap
Unable to load SqlServerSpatial.dll

I am trying to use the SqlServer Spatial CLR types in a C# .Net project. I want to use SqlGeometry …

c# .net sql-server clr geospatial
MongoDB 'unable to find index for $geoNear query'

I'm just trying to get a simple near query working. Here's a sample of my document. {"point": {"type": "Point", "coordinates": [30.443902444762696, …

mongodb geospatial mongodb-query
Solr - How do I construct a query that requires a NOT NULL Location field

I have a Solr index with a set of coordinates stored as a Location type; I would like to query …

solr geospatial solr-query-syntax
SQL Server 2008 Spatial: find a point in polygon

I am using SQL Server 2008 spatial data types. I have a table with all States (as polygons) as data type …

sql-server sql-server-2008 sql-server-2008-r2 geospatial spatial