Merging Intersecting Lines in R
I came across a problem without a clear solution. I had lots (and lots) of line segments, which represented river stretches across GB. All I wanted to do was join together touching segments into a
GIS
Playing CHESS with Effective Rainfall (GB)
It’s useful to know how much water enters a system, particularly as part of the runoff model. I’ve always thought of the budget of precipiation (Prec) & potential evapotranspiration (PET) as effective rainfall (Raineff), but
Animating Time: QGIS & FFmpeg
I was recently asked if I could animate this summer’s records from the Bloomin’ Algae App, to help show the spatial patterns as well as the impact of a recent media interest in the subject
UK Wind Data – TIFFs (free)
It’s very hard to get decent observed wind data for the UK (and most countries, I imagine), so I was intrigued when I found a 1km resolution database of wind data freely available online. You
Animating Journeys as Maps
Over a few years going on Wednesday Wanders, I’ve collated quite a lot of data on walking routes in and around Edinburgh. In some cases this is time-stamped GPS data taken from the walk, otherwise
Blimp-based aerial archaeology, circa 2006
Many years ago now, I was part of a group looking at archaeological GIS and experimenting with the use of a small blimp and remote camera for the purposes of scientific research. These days you
Name That Lake!
Two things coincided this week. The imminent launch of our new UK Lakes Portal illuminated how few lakes we have recorded names for, whilst a visiting work experience student was needing something to do… It
Meander Maps (aka jQuery Slider GIS)
I forget exactly how I first came across this topic, but it’s likely I’d found out there was a town in America called England. When I saw where it was, I panned across the landscape
Seabird Density Visualisation, British Isles
I wanted to do a pretty simple GIS task with some nice visualisation, and in the course of my work had stumbled upon the ‘Magic’ site the government has set up. It’s not the flashiest
Mexican Hexagons! Heat mapping Vienna and more..
Isn’t it amazing how much Mexico looks in no way like north-eastern Austria? But Mexico is hot, and here we’re taking a look at heat mapping.. Having recently seen demos on both hexagonal heat maps and the Qgis2threejs