Top "Gis" questions

Converting geo coordinates from degree to decimal

I want to convert my geographic coordinates from degrees to decimals, my data are as follows: lat long 105252 30°25.264 9°01.331 105253 30°39.237 8°10.811 105255 31°37.760 8°06.040 105258 31°41.190 8°06.557 105259 31°41.229 8°06.622 105260 31°38.891 8°06.281 I have …

r gis

How do I convert kilometres to degrees in Geodjango/GEOS?

I'm using the "buffer" method from the GEOS API to create a circle based on a point and a radius …

python django gis geodjango

Point in Polygon with geoJSON in Python

I have a geoJSON database with lots of polygons (census tracts specifically) and I have lots of long,lat points. …

python geometry gis geojson

How to read / write geography data using C#, Entity Framework and SQL Server 2008?

I have a form from which the user will be able to enter the latitude and longitude of a certain …

c# sql-server-2008 entity-framework gis geography

Buffer (geo)spatial points in R with gbuffer

I'm trying to buffer the points in my dataset with a radius of 100km. I'm using the function gBuffer from …

r gis geospatial

Error: isTRUE(gpclibPermitStatus()) is not TRUE

This question may be a duplicate of an earlier unanswered one. I still have the problem. I am trying to …

r gis choropleth

Shapefile reader in Python?

Are there any libraries that I can use to read a shp/shx/dbf/sbx set of files? I mainly …

python gis shapefile

Distance between 2 POINTs in Postgis in srid 4326 in metres

This is probably a simple question, but I'm not very good at PostGIS and don't fully grok all of this. …

postgresql geospatial postgis gis

Rasterizing a GDAL layer

Edit Here is the proper way to do it, and the documentation: import random from osgeo import gdal, ogr RASTERIZE_…

python gis gdal rasterizing

How to manipulate tmap legend?

I'm creating a thematic map of percent change per year for bird species. here is the code I have: tm_…

r gis tmap