如何使工具提示标记变大

Question

这是我的 wandb vega。问题是，现在，很难将鼠标悬停在我的行上并显示工具提示。就像您必须将鼠标悬停在该行的确切像素上一样。如何使激活半径更大，以便在我大约位于线条点的顶部时显示我的工具提示？

{
  "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
  "description": "A plot for an arbitrary number of lines",
  "data": {
    "name": "wandb"
  },
  "transform": [
    {"filter": {"field": "${field:lineVal}", "valid": true}},
    {"filter": {"field": "${field:step}", "valid": true}}
    ],
  
  "title": "${string:title}",
  "layer": [
    {
      "selection": {
      "grid": {
          "type": "interval",
          "bind": "scales"
        }
      },
      "mark": {"type": "line", "strokeWidth": 5, "interpolate": "linear", "tooltip": true},
      "encoding": {
        "x":{
          "field": "${field:step}",
          "type": "quantitative",
          "title": "${string:xname}"
        },
        "y": {
          "field": "${field:lineVal}",
          "title": "y",
          "type": "quantitative"
        },
        "color": {
          "type": "nominal",
          "field": "${field:lineKey}"
        },
        "strokeDash": {
          "type": "nominal",
          "field": "name"
        }
      }
    }
  ]
}

Answer 1

您尚未提供数据和架构，因此很难回答您的具体情况。但是，您应该能够调整 https://vega.github.io/vega-lite/examples/interactive_multi_line_pivot_tooltip.html 中的示例代码来实现您想要的。