Can you re-render vega-lite chart without terminating the old one?

Question

I know there's some streaming models and other smart ways to update the chart.

But is it possible to do even simpler, just call vegaEmbed(element, vegaSpec) on the same element multiple times, so the new chart will replace the old one?

It works, but I wonder if there's some memory leaks or if you need somehow properly terminate the old graph?

Answer 1

The Vega view API offers a finalize() method for exactly this: to be called when a chart is no longer needed, in order to prevent memory leaks. See https://vega.github.io/vega/docs/api/view/#view_finalize

Once you call this, it should be safe to overwrite the old chart.