gishub.io – Page 4 – GIS and spatial news

Counting adjacent polygons in PostGIS

Which country has the most neighbours? It´s probably not Australia (surrounded by ocean) or the US (huge country, but few neighbours). Counting polygons manually stops being fun after you reach around 5,...

Calculating distances in R

How to calculate distances in R. This script will: The resulting plot with distance to each hospital:

Publishing your web maps on GitHub Pages

We all have bills to pay and web maps to publish. Some are hosted on platforms such as Felt or ArcGIS online and some are standalone web maps, such as the one...

Connecting to APIs with R

With millions of APIs with data available, it would be a shame to miss out. How do you connect to an API and fetch data in R? This script will: Code: In...

Routing using OpenStreetMap, R and Openrouteservice

Support for GIS related operations has improved a lot in recent years in the R universe and there are a lot of libraries for GIS. In this case, I wanted to do...

Geocoding an address list using R and Nominatim

Knowing how to do geocoding, the process of matching an address with coordinates, is a valuable skill. There are numerous ways of doing it and here is one of them. This R...

Processing geodata with a QGIS model

I’ve never really liked the QGIS processing model builder. It is not very user friendly, it lacks features and it is visually displeasing. Still, being an integrated part of QGIS, it is...

Working with PostgreSQL/PostGIS in R

PostgreSQL/PostGIS is often my top pick when working with geodata in databases and I use it frequently with FME and QGIS, but until recently, not so much with R. How do you...

Creating an interactive web map using R/Leaflet

Using a web map is a flexible way of presenting your GIS project and I wanted to use R to create a Leaflet web map. This R script will: To run the...

Overture Maps Foundation releases first batch of geodata

Overture Maps Foundation is an organization for creating geospatial data sets, maintained by some of the biggest names in the business, such as Amazon, Meta, Microsoft and ESRI. Overture recently released their...