In this post we show how to create highly aesthetic bivariate choropleth maps, including annotations and a custom legend –exclusively in R.
All posts filed under “Geoinformation”
Categorical spatial interpolation with R
How I used the kknn and ggplot2 packages together with some parallel computation to spatially interpolate several hundred thousand points.
Beautiful thematic maps with ggplot2 (only)
In this blog post, I explain step by step how I (eventually) achieved a nice thematic map with pure ggplot2 – from a very basic, useless, ugly, default map to the publication-ready and (in my opinion) highly aesthetic choropleth.
Truth and Beauty in Georeferenced Social Media
As georeferenced data from social media, be it in the form of Tweets, Foursquare Check-Ins, Instragram photos, Flickr pictures, etc., are increasingly available, so do (geospatial) analyses and visualizations done with them become more and more popular. Often, such studies and applications claim to be able to infer social, cultural, and even political insights from these data, spatially fine-grained and referenced down to the level of countries and cities.
I haven’t seen a single one which actually succeeded in plausibly explaining the how to me.
How to install SpatiaLite and SpatiaLite GUI on Ubuntu 12.04
SpatiaLite is an OpenGIS-enabled spatial extension to SQLite, similar to PostGIS. Unfortunately, the packaged version for Ubuntu, especially the GUI, is rather outdated. Therefore, this post shows how to compile and install the latest versions (4.0.0 and 1.6 respectively) and all needed dependencies from source.