Top "Gis" questions

Guidelines for GIS application development

I'm supposed to create a GIS application for my MSc, and I was wondering what are the best free and (…

gis esri ogc opengis

extracting information from a JSON file using XSLT version 1.0

I'm a noobie to stackoverflow and xslt so I hope I don't sound unintelligent! So I am working with SDI …

json xslt gis xslt-1.0

Geographical heat map of a custom property in R with ggmap

The goal is to build something like http://rentheatmap.com/sanfrancisco.html I got map with ggmap and able to …

r ggplot2 heatmap ggmap gis

Difference between multipolygon and polygon in PostGIS

What is the difference between point and multipoint ? linestring and multilinestring ? polygon and multipolygon ? In PostGIS What is the secret …

gis polygon postgis esri

Loading JSON into a GeoDataFrame

I'm having difficulty loading the following JSON containing GIS data (https://data.cityofnewyork.us/resource/5rqd-h5ci.json) into a …

python json gis geojson geopandas

Finding adjacent polygons in R (neighbors)

I'm starting with a SpatialPolygonsDataFrame which has the data to create a map of the districts of Ghana (available at …

r gis polygons

Convert NetCDF (.nc) to GEOTIFF

I have .nc file sizing around 300MB with a couple of datasets (TEMP, DEWPOINT) forecast data. I need to convert (…

python gis gdal netcdf geotiff

Merging Two SpatialPolygonsDataFrame Objects

Using the shapefile available here I am trying two merge the polygons of Sudan and South Sudan, so that I …

r gis shapefile

Configuring maxExtent and restrictExtent coordinates in OpenLayers

I'm very new to OpenLayers and working with GeoData; as such, I think I have a pretty noob question about …

maps gis openlayers arcgis-js-api

Facet with free scales but keep aspect ratio fixed

I am using ggplot to draw faceted maps and have been unable to work out how to allow "free" scales …

r ggplot2 gis