Tag Archive: QGIS

Network analysis video – 7th Scottish QGIS user group

Network analysis presentation from the 7th Scottish QGIS user group. Featuring Ordnance Survey open data, QGIS, GRASS and R.

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Spatial networks – case study St James centre, Edinburgh (2/3)

This is part two in a series I’m writing on network analysis. The first part is here. In this section I’m going to cover allocating resources, again using the St James’ development in Edinburgh as an example. Most excitingly (for me) the end of this post covers the impact of changes in resource allocation.

R with GRASS GIS – easiest Munros

I’ve been having a more sustained play with R and GRASS together. I’ve previously used them, in tandem, for processing satellite images, but haven’t been much further. In this post I’ll look at… Continue reading

Converting (British) National Grid references

I was supplied spatial point data this summer where the locations were detailed in Ordnance Survey’s National Grid (NGR) format. If you’re not familiar with it, rather than using eastings and northings (in… Continue reading

Mapping from GPS files

I’m just back from a 7 day cycle tour of Arran, Islay, Bute and the bits in between. I wanted to create a map of the route from the GPS log files of… Continue reading

Monthly patterns in Scottish snow (1946-2006)

There’s been a bit of a flurry on Twitter recently about April snow in the UK (see tweet below). My opinion is there’s often UK snow during April, but it happens to be… Continue reading

Cairngorms snow cover, 1954-1984

Neil Reid wrote a post this week about news from the Mar Lodge estate. On it he mentions the future of Derry Lodge. I’ve never been to Derry Lodge so seeing a photograph… Continue reading

QGIS user group – presentation

I spoke today at the second Scottish QGIS user group meeting. It was a diverse gaggle of practitioners including academics, council, quango and no doubt many more. Some really interesting talks went on,… Continue reading

How to view and query elevation models and other raster data

Since I wrote my post on the OS Terrain 50 digital terrain model I’ve had a steady stream of internet searches sending people to my blog. I’ve also had a couple of questions… Continue reading

GB potential evapotranspiration dataset

A few weeks ago I wrote about a method to derive incoming solar radiation for different latitudes. This was to help a GIS Masters student who’s looking to derive an equation for propwet… Continue reading