Geospatial Stuff - Posts

Note that some older pages may use older versions of R and/or python packages that have been superseded. Code worked as published at the publication or (where applicable) last modified date.

tmap vs. ggplot2 for mapping

I think I prefer…

David O’Sullivan

The joy of DuckDB

Insert duck-related joke here

David O’Sullivan

In praise of GeoPackages

Shapefiles… who needs ’em?

David O’Sullivan

Giscience 2025

Call for papers

David O’Sullivan

GeoCart’2024

Reflections on the meeting

David O’Sullivan

Useful utilities for NetLogo

For when you are missing R/python

David O’Sullivan

The model zoo

Keeping up with NetLogo

David O’Sullivan

The 30 day map challenge

It’s called ‘challenge’ for a reason

David O’Sullivan

Experiments with R interpolators

Messing around with interpolating via a triangulation to apply coordinate transformations

David O’Sullivan

Spiral origami

Things to make and do

David O’Sullivan

OK COVID, you win

The end of the line

David O’Sullivan

Low level handling of sf objects

Goddamnit, floating point!

David O’Sullivan

Locations of interest in 2021 delta outbreak

When everything went pear-shaped

David O’Sullivan

Inverse distance weighted (IDW) interpolation using spatstat

So many packages so little time

David O’Sullivan

Kernel density estimation in R spatial

Here’s one way to do kernel density estimation in R spatial

David O’Sullivan

Uniform random points on the globe

The earth’s a sphere: who knew?

David O’Sullivan

Mapping the Dulux colours

The ultimate in categorical mapping

David O’Sullivan

Affine transformations of sf objects

Manipulating simple features in sf is sorta simple, sorta not…

David O’Sullivan

Aotearoa New Zealand commutes viewer

I have no idea what this is, but it looks… cool?

David O’Sullivan

What three chords

Seriously, WTC?!

David O’Sullivan

A spatial COVID model

Fiddling (with code) while the world burns

David O’Sullivan