R, GeoJSON and GitHub

September 20, 2013
By

(This article was first published on Omnia sunt Communia! » R-english, and kindly contributed to R-bloggers)

GeoJSON is an open computer file format for encoding collections of simple geographical features along with their non-spatial attributes using JavaScript Object Notation. These files can be rendered easily within GitHub repositories. GitHub uses Leaflet.js to represent the data and OpenStreetMap for the underlying map data.

Spatial objects in R can be converted to GeoJSON with writeOGR from the rgdal package. For example, let’s display the meteorological stations of the SIAR network. (By the way, GitHub also supports rendering csv files)

Now upload this file to a GitHub repository or create a Gist and voilá!

Another example, now using a larger dataset from the OpenPV project. From the GitHub help page:

If your map contains a large number of markers (roughly over 750), GitHub will automatically cluster nearby markers at higher zoom levels. Simply click the cluster or zoom in to see individual markers.


To leave a comment for the author, please follow the link and comment on his blog: Omnia sunt Communia! » R-english.

R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more...



If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook...

Comments are closed.