Tableau is a data visualisation software that is used for creating a wide range of different visualisation to interactively present data and obtain insights. It has a very intuitive user interface and you don’t need any coding knowledge to work with it. For this tutorial we will be using Tableau Public which can be downloaded here.
We will be creating a spider map or origin-destination map that shows paths between our origins (RNLI stations) and destinations (call-outs). All the data you will need for this tutorial can be found here.
On 28 February 1823, Sir William Hillary made an impassioned appeal to the nation, calling for a service dedicated to saving lives at sea. That service was to become the Royal National Lifeboat Institution (RNLI).
Did you know?
- There are 238 lifeboat stations around the coasts of Great Britain, Ireland, the Isle of Man and Channel Islands.
- Tower Lifeboat Station on the River Thames in London is the RNLI’s busiest.
- There are 349 lifeboats in the RNLI fleet.
- The RNLI have 4,966 volunteers.
- It cost £176.5m to run the RNLI in 2017.
Last week we looked at using QGIS to create some visualisations using data from the Royal National Lifeboat Institution (RNLI) and Ordnance Survey. This week we will be taking the same datasets and working with them within Kepler, Uber’s new open source geospatial analysis tool.
KEPLER (Pt 1)
Kepler is great for creating a range of different visualisations easily and quickly, and to begin with we are going to look at creating a visualisation depicting where in the UK most emergency call-outs are made. To do this we will need to download the RNLI Return of Service data.
In an emergency the importance of location is critical. Knowing the precise whereabouts of an incident can be the difference between life and death.
The Royal National Lifeboat Institution (RNLI) are the charity that saves lives at sea. Responsible for saving over 140,000 lives since their formation in 1824 they work with a dedicated team of volunteers, staff and community fundraisers. They allow us to enjoy our shorelines and water, safe in the knowledge that in an emergency they will be there to assist us.
There is a lot of data behind the lifesaving and in 2017 RNLI teamed up with ESRI to create an open data portal to help share some of this data.
A few weeks ago, we announced news that our Geovation team were embarking on a national series of hands-on introductory workshops about visualising with geographic data. With sessions having already been held in Edinburgh, Birmingham and Manchester, next week’s session in Bristol has sold out! Today, we can share details of our fifth and final date of the mini-series. Remember – it’s FREE to attend!
Geovation is holding a series of hands-on introductory workshops to teach attendees the principles of visualising with geographic data. As all tickets were snapped up for both our London HQ and Edinburgh sessions, we’ve decided to run four more events around GB over the next few weeks. Disclaimer – these events are FREE to attend!
Early in 2018 Ordnance Survey (OS) were approached by the Registers of Scotland (RoS) to support their Data Month, an internal event for RoS staff held in March to facilitate the sharing of knowledge and best practice across the business. RoS is the non-ministerial government department responsible for compiling and maintaining 18 public registers. These relate to land, property, and other legal documents and include the Land Register of Scotland and General Register of Sasines.
Critique is defined by the Oxford Dictionary as a detailed analysis and assessment of something and in 2010 Judith Tyner released the book Principles of Map Design and included the diagram on the right, defining the map making process.
Map critique plays an important role in the design process and this is for a number of reasons:
- Feedback will improve your map – If you always think you’re right, how do you know for sure your map is actually any good and doing what it is intended?
- It allows you to analyse the way you work – Constructive criticism can lead you away from bad practices and towards good ones. Mistakes can be spotted and you can learn from them.
- It can give you an advantage – Criticism can be information that perhaps no one else has, making your map a better one. This is valuable information and give you an edge amongst your competitors.
As we start a new year we thought it would be a good time to reflect on 2017 and also look ahead to 2018. 2017 was our first year with the new team name, GeoDataViz, prior to which we had been known as CartoDesign. You can read more about the changes we made and the reasons why here.
Throughout the year we saw and heard an increasing number of things from many others that validated our decision to make these changes to our team. We always want to stay relevant and forward-thinking and we feel that we are really well placed to do this. It was much more than just a change of name for us – more a change of mindset and a new approach to data. We’re now more journalistic and we aim to tell compelling visual stories rather than just map topography. When working through a project we are now asking more questions, challenging requirements, digging deeper and looking for different angles to tease out narratives and insights.
One of our big achievements last year was the release of our GeoDataViz Toolkit (read more about the release here). Our toolkit is a set of resources that will help you communicate your data effectively through the design of compelling visuals. It is something that we developed and used ourselves throughout 2017 and it enabled us to be more efficient and consistent, allowing us to free up time to work on other things.
Did you know that OS Maps subscribers added over 400,000 routes to the service over the last 12 months? We’ve analysed the (almost) 400,000 public routes and found that Snowdon bags the top spot for most routes created.
We broke the country down into square kilometres and counted the number of routes passing through each square, and while Snowdon topped this list, the Edale area of the Peak District grabbed 6 of the top 10 spots, with the Lake District taking the remaining places.