CODEWITHSUNDEEP
vega-litevega
John Farkerson
John Farkerson

Reputation: 2632

Vega click param on a single layer being applied to all layers

I can't for the life of my figure out what is going on here. Basically, I have a vega chart and I want to only enable clicking on the points, not the lines (because it seems that when I enable clicking on the lines, the timestamp is off - I end up with the timestamp of the beginning of the chart instead of that segment for some reason). I have separate layers for my points and my lines. It seems to me that it should be easy - simply create a click event for each of the point layers, and do nothing to the line layers. However, I have found that the click events created on any one layer are actually applied to ALL the layers for some reason. i.e. if I create a click event param for each point layer, all three of them fire whenever you click on any of the points. So I decided to just create one click event on one of the layers instead. However, this event also fires when you click on the lines! I somehow can't disable the line clicking no matter what I try. Worse, there is no way to distinguish between the line clicks and the point clicks in the frontend, so I can't even filter them out. Desperate for a solution.

Here is my Vega-lite json: Open the Chart in the Vega Editor

Upvotes: 0

Views: 101

Answers (1)

John Farkerson
John Farkerson

Reputation: 2632

Haven't figured out why the events are being applied to all layers. However, I was finally able to disable clicking on the lines by changing the param to the following:

"params": [
    {
      "name": "click",
      "select": {
        "type": "point",
        "fields": ["group", "ts"],
        "on": {
          "type": "click",
          "source": "scope",
          "marktype": "symbol"
        }
      }
    }
  ]

Upvotes: 0

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