An Open Data Camp 7 session on data visualisation, led by Ian Makgill. These are live-blogged notes.
There is a lot of temptation to use really exciting visualisations. But 90% of the time, you end up with bar or line charts – because they work. If you have more than 20 data points along the x axis, you probably want a line chart, not a bar chart.
We’re celebrating the tenth anniversary of @instituteforgov this week, which provides a great opportunity to look back on everything we’ve done with data down the years.
What do you do if you find QGIS too easy (and like pain) – you start mapping in R.
But what do people in the room do with mapping, and what data sets do they use?
In Birmingham they used Edubase to plot previous ‘catchment’ areas for schools. Some schools do it from the centre of schools, some from the school gates. And some schools have more than one gate… Some were basing it on distance to the nearest train station. It was about creating boundaries, and then you could set up a tool based on postcodes to see if people are within the boundaries are not.