Edited 8 Aug 2016 – see this update about new files covering the 2016 ASGS update.
I regularly get asked if Tableau can show filled areas on maps – e.g. post code boundaries, local government areas, statistical or census areas, etc.
As you can see the answer is yes but you need to do a little pre-processing of the data to get it into a readable format. Fortunately I have already done this for the regions defined by the Australian Bureau of Statistics and can share the resulting extract files with you:
- Boundaries from the ASGS (the spatial standard used by the ABS since 2011).
- Boundaries from the ASGC (the spatial standard used from 1984-2011).
I’ve included both vertex and centroid points in the TDE files – you can use this to display polygons, points, both or even to put labels on the shapes. The techniques to do this are shown in this video I recorded that demonstrates how to use the data.
Note that these data sets can be very large (over a million data points) if you are plotting the entire continent so you will see best performance if you are using a 64-bit version of Tableau Desktop.