In this video, I put the new feature in Tableau 2021.4 to the test by visualising every Bus stop and every road in Central London using 2 data sets from the Ordnance Survey and TFL (Transport from London). We hit some snags with some performance issues so we also used Alteryx (in a separate video).

Viz on tableau Public: https://j.mp/31tMX3y

Data from
Ordnance Survey Data Hub: https://osdatahub.os.uk/downloads/open
TFL: https://data.london.gov.uk/dataset/tfl-bus-stop-locations-and-routes

Tableau Release notes:
The capability of adding an unlimited number of layers to your map visualisation just got more powerful. With support for multiple data sources in map layers, you can now analyse more data in the context of one another. For example, you can build a map that shows your retail stores’ location, accessibility, population and revenue – all coming from different data sources.

0:00 - Intro
01:28 - Setting up
03:18 - Makepoint function for projection conversion
06:46 - Alteryx Workflow to do the same thing
08:06 - Swapping to my Alteryx data set.
08:52 - Bringing in our Road data
11:50 - Building out the road network
13:53 - Bringing them together
15:37 - Tidying up
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