Here is the code: %matplotlib inline import geopandas as gpd import matplotlib as mpl # make rcParams available (optional) mpl.rcParams[‘figure.dpi’]= 144 # increase dpi (optional) world = gpd.read_file(gpd.datasets.get_path(“naturalearth_lowres”)) world = world[world.name != ‘Antarctica’] # remove Antarctica (optional) world[‘gdp_per_person’] = world.gdp_md_est…
Assume that you have a file with some locations as text with one location per line. For example, here are some school names in Copenhagen, Denmark, stored in schools.csv: Hyltebjerg Skole Heibergskolen Ellebjerg Skole Katrinedals Skole Peder Lykke Skolen Amager…
While Redshift does not offer native support for spatial data, indexes and functions, there exists a partial workaround. Redshift supports Python UDFs and can also load custom Python libraries. Out of the box, Redshift has numpy, scipy, pandas and many…
Gratefully making use of what others have provided, i.e. geopy, Google and plpythonu. Type to hold result of geocoding: CREATE TYPE geocoding AS ( place text, latitude double precision, longitude double precision ); Function that does the actual geocoding (to…
Being interested in maps in general, and specifically vector data, of course I had to take the new Google Maps for a spin. Vector data aside, what fascinated me most was the option to display photos of the current location…
This is work in progress…
This post is very Denmark-specific. I was annoyed that downloading environmental data from the ministry of the environment was so cumbersome. Long story made short, here are download URLs for environmental data: Dataset URL Kirkebyggelinjer KIRKEBYGGELINJER_SHAPE.zip Skovbyggelinjer SKOVBYGGELINJER_SHAPE.zip Åbeskyttelseslinjer AA_BES_LINJER_SHAPE.zip…
Rtree is a ctypes Python wrapper of libspatialindex that provides a number of advanced spatial indexing features for the spatially curious Python user.
A friend of mine, who is the CEO of a company that develops an embedded database, asked me to do a presentation on spatial indexing. This was an opportunity for me to brush up on R-trees and similar datastructures. Download…
Spacebase is a spatial datastore that began life as military-grade software, which at least sounds kind of cool. It’s an in-memory database, really, so switch off the cluster and the data is gone. Apparently the same thing was (unknown to…