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.

ggplot map with l

I want to plot a world map using ggplot2 (v.9) which combines two pieces if information. The following example illustrates: …

r ggplot2 geospatial
Maximum length of a decimal latitude/longitude Degree?

What is the maximum length (in kilometers or miles - but please specify) that one degree of latitude and longitude …

math geolocation geospatial geography geo
Algorithm for determining minimum bounding rectangle for collection of latitude/longitude coordinates

Is there an algorithm to determine the minimum bounding rectangle around a set of latitude/longitude coordinates? It is OK …

iphone objective-c gps geospatial
Does PostgreSQL implement Geospatial relationship queries?

My company is looking at different database providers, and how they implement Geospatial queries to get distances from a Lat/…

postgresql gis geospatial
Add raster to ggmap base map: set alpha (transparency) and fill color to inset_raster() in ggplot2

I want to plot a map with a raster overlaying a GoogleMaps base map in ggplot2. Therefore, I used get_…

r plot ggplot2 geospatial ggmap
sql geography to dbgeography?

Maybe I'm missing something. I have a sql server column of the "Geography" datatype. I want to use the DbGeography …

sql-server c#-4.0 gis geospatial spatial
Creating a spatial index on oracle

I have a table 'floating_options', and I want to create a spatial index on a column 'area_geo' (which …

sql oracle geospatial spatial-index
Draw a map of a specific country with leaflet

I would like to use the package leaflet with R to draw a map of a specific countries such as …

r maps leaflet geospatial r-leaflet
How to get the driving distance between two geographical coordinates using python?

I want to get the driving distance between two points in python. I am not allowed to use Google Maps …

python geospatial openstreetmap driving-distance
How to calculate the distance in meters between a geographic point and a given polygon?

First of all, I'm new to GIS, so pardon any mistakes. I need to discover the distance between a latitude …

java gis geospatial geotools