linked data

Data defined in external CSV or JSON files off the page can be imported via a <link> tag. This tag must have an ID attribute and variance-data relation. For example, adding

<link id="foo" rel="variance-data" href="data/foo.csv">

to the <head> or <body> of a page will allow you to reference the this data from any charts on your page:

<chart data="#foo">...</chart>