Find Vega signal selector that works for most examples

[thinkh]

At the moment we use the signal selector:

{
  "name": "CLUE_captureState",
  "value": null,
  "on": [
	{"events": "mousedown, touchstart", "update": "null", "force": true}
  ]
}

However that might produce, empty states or might be too early.

• Experiment with mouseup
• Filter data that has not changed between two clicks

[thinkh]

This is on hold for now, because we decided to use an adapted Gapminder as example in the paper.

[mozark24]

Hello. Odds of this project being re-instated (Vega examples)? I'm researching provenance graphs with a particular web application.

[thinkh]

@mozark24 Sounds good. I think it would be good to schedule a short call where we can discuss your ideas, as suggested by @mstreit via mail. Please let us know when it would work best for you.