Notes on Tableau and Data Visualisation
The new INTERSECTS() spatial function, introduced in 2022.4, makes it possible to determine if two spatial objects overlap without needing to perform a spatial join. This post walks through a few examples with points, polygons (buffers) and lines.
This tutorial video steps through how to create flight path maps in Tableau using spatial functions including MAKEPOINT, MAKELINE and DISTANCE.
Spatial joins can help you explore geographic relationships between different sources of spatial data. This blog and video walk through an example in Tableau.
In this video, I step through how to use map layers in version 2021.4 to create a three-layer map with polygons, lines and points and also how to use the different map layer options.
Version 2021.2 sees the introduction of a new spatial function: Area. This blog and workbook include a few examples along with a couple of cautionary notes.
With the ability to combine and overlay more spatial data, the Map Layers functionality enables a wider variety of geospatial analyses. This post walks through an example of searching for an Airbnb in London that meets different criteria.
This blog post explores using Tableau’s new Map Layers feature to create custom User Interface elements such as popup charts, viz in tooltips and custom URL links.
The new Map Layers feature allows you overlay multiple marks layers on a map removing the need to use a dual axis and opening up new possibilities for visualising multiple sources of spatial data.
Buffer spatial functions allow you to perform trade area analysis in Tableau Desktop without any pre-processing of data. This blog explains what buffers are and how to create them.
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