In this blog post I’ll show you how to extract data from maps using QGIS to georeference a map image and identify data points. The steps are: Start with a map image containing data you want to capture, such as marked locations Add a base map to QGIS that you will load the map image… Read More »
This post goes through the general idea of an index, why a card index might be useful, and some examples of a card index being used. Card index systems are largely a thing of the past, but they still come up from time in archives and libraries around the world. What is an index? An… Read More »
Web scraping is the process of automatically identifying and downloading data from a webpage. This blog post looks a a few python web scraping options. Alternatives to web scraping include: – Using an API. Usually a better option than web scraping if an API is available. See also Creating an API with flask. Open data… Read More »
Inspired by the Storytelling With Data book I wanted to try applying some of the techniques to some existing charts and graphs. In all the examples I have been limited in not having access to the original data, so re-plotting hasn’t really been possible. Instead, I have redrawn using Inkscape or Excel and then focused… Read More »
Historic UK Rainfall Data The Met Office Hadley Centre holds (Met Office Hadley Centre observations datasets HadUKP) UK Rainfall Data going back to the 1800s. It records the daily average rain fall for 9 regions around England, Wales, Scotland and Northern Ireland. You can download the data from here: Met Office Hadley Centre HadUKP Data… Read More »