Top "Geo" questions

geo is the abbreviation for the term "geographic". It includes handling of geographic coordinates and vectors for display and calculation purpose.

Formulas to Calculate Geo Proximity

I need to implement a Geo proximity search in my application but I'm very confused regarding the correct formula to …

php mysql math geospatial geo
How to read external GeoJSON file from openlayers?

I have to draw some lines by OpenLayers. The line features are coded as GeoJSON format. My code is ok …

map openlayers geo geojson
Google Maps API 3 fitBounds padding - ensure markers are not obscured by overlaid controls

I'd like to be able add padding to a map view after calling a map.fitBounds(), so all markers can …

google-maps google-maps-api-3 padding google-maps-api-2 geo
How to use Redis and geo proximity search to find two users at the same location?

I want to implement a service that, given users' geo coordinates, can detect whether two users are at the very …

redis geospatial geo geohashing
Plotting points on a map with D3

I'm trying to plot a few points onto a map using the D3 geo library based on latitudes and longitudes. …

javascript svg d3.js geo
What's the best way to lookup the US county a US city resides in?

I'm looking for the best/easiest way to programmatically grab the name of the US county a given US city …

geolocation geocoding geo
How to sort array items by longitude latitude distance in javascripts?

I am having following JSON array of 6 locations. Is there any way sort these based on longitude and latitude where …

javascript arrays sorting latitude-longitude geo
Geopy: calculating GPS heading / bearing

First time poster here. I am doing some data analyses on collected GPS data for a bridge inspection ROV octorotor. …

python python-3.x gps geo geopy
Oracle spatial search within distance

I have the following table Cities: ID(int),City(char),latitude(float),longitude(float). Now based on a user`s …

oracle search geo oracle-spatial
How can I quickly determine the State for a given zipcode?

I don't need the city or address, just the state. And I don't want to make an API call if …

javascript php geo zipcode