Creating small multiples and repeating axis using Deneb in Power BI

Using Deneb in Power BI it only takes a few steps to change a basic visualisation into one which shows small multiples or repeating axis. Here's how it can be done. The documentation for much of this is here: Small Multiples: https://vega.github.io/vega-lite/docs/facet.html Repeating Axis: https://vega.github.io/vega-lite/docs/repeat.html