bind='legend' selector won't respond to click

[makmanalp]

coming here from: vega/vega-embed#351

Reproduced this in the latest version of jupyterlab as well as the online editor:Open the Chart in the Vega Editor

expected behavior: clicking legend updates selection
actual behavior: selection / selectorxyz_store and chart seems unresponsive

[makmanalp]

For folks running into this: I was able to work around this by making a mini chart with mark_bar and only a y axis to form legend-like squares, adding the selection to that too, and then concatenating that to the left of my chart to look like a legend.

[arvind]

Hi @makmanalp, apologies for the slow response here. This doesn't look like a bug. When a selection is bound to a legend, the selection's field/encoding should match the legends. For your spec, the legend corresponds to the color channel and field. So, if we switch "fields": ["keyspace"] to "fields": ["color"] instead, clicking the legend works as expected. Hope that helps!