readme.md
In vegawidget: 'Htmlwidget' for 'Vega' and 'Vega-Lite'

This example shows how we can design a chart using Vega-Lite, then use Shiny to run that chart using different datasets.

In the server function, we use vw_shiny_set_data() to observe the reactive expression rct_data(), updating the dataset, then re-running the Vega-Lite chart, whenever rct_data() changes.

To do this, we had to name the dataset in the Vega-Lite specification; you will see in the definition of spec_bar that there is a dataset named "source". We use this as the name argument for vw_shiny_set_data().