Top "Gis" questions

How can I convert an excel spreadsheet (.xls) to a shapefile programmatically?

I have an excel spreadsheet I want to convert to an ESRI shapefile programmatically. It contains X and Y coordinates …

python excel gis shapefile

How to convert polygon data into line segments using PostGIS

I have a polygon data table in PostgreSQL/PostGIS. Now I need to convert this Polygon data into its corresponding …

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From Voronoi tessellation to Shapely polygons

from a set of points I built the Voronoi tessellation using scipy: from scipy.spatial import Voronoi vor = Voronoi(points) …

python gis voronoi shapely

Finding Cities within 'X' Kilometers (or Miles)

This may or may not be clear, leave me a comment if I am off base, or you need more …

mysql gis coordinates distance coordinate-systems

How to extract interior polygon coordinates using Shapely?

I am new to Shapely (but enthusiastic about it), and recently I've discovered a bit of a road bump. I …

python graph gis shapely fiona

What is the quickest way to find the shortest cartesian distance between two polygons

I have 1 red polygon say and 50 randomly placed blue polygons - they are situated in geographical 2D space. What is …

c# algorithm gis polygon distance

error while loading shared libraries: libgdal.so.1 in archlinux

I (myself a programm novice) get the following error message when starting a script in archlinux, which has been written …

django gis gdal archlinux

Automatically fixing ring self-intersections in shp2pgsql

We're importing a whole bunch of ArcGIS shapefiles into PostGIS, converted on the fly with shp2pgsql. Problem is, if …

import gis postgis shapefile self-intersection

Projecting my shapefile data on leaflet map using R

I (on Win7) was trying to get my shapefile data (Here are the data files.) to be displayed using leaflet …

r leaflet gis shapefile rgdal

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