That's really cool! I am trying to learn from it! One question: Are the lines for event listening (to capture the filter) the reason a double click to reset all filters doesn't work?

Thanks!, I'm not sure I'm understanding the question. If I select USA on origins, and then double click on it, it resets that filter

Yes, but if you filter on more than one attribute, double click seems just to reset the current filter, making it a bit hard to find the other filters. (I hardly know vega lite, but I am currently coding an observable based upon vega lite (https://observablehq.com/@ee2dev/exploring-a-csv-file-with-vega-lite) where I am happily substituting my crossfilter with your because you just solve several questions I have. But the (default?) behaviour in that cross-filter is :a single click on the attribute resets this filter whereas a double click resets all filters - which seems preferable (mainly I don't see where the different behaviour comes from, that's why I asked.

Very interesting. I had no idea that double click behavior existed. The original crossfilter example also has it: https://observablehq.com/@vega/vega-lite-cross-filter-example I will have to look more into it. Also, consider using https://observablehq.com/@john-guerra/navio

cool, thanks a lot! Keep up the great work!