Spike Map

For Standalone Deneb only (not Certified AppSource Deneb)

Inspiration : https://observablehq.com/@vega/vega-lite-spike-map

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "usermeta": {
    "deneb": {
      "build": "1.2.0.20220421#9062c55",
      "metaVersion": 1,
      "provider": "vegaLite",
      "providerVersion": "5.2.0"
    },
    "interactivity": {
      "tooltip": true,
      "contextMenu": true,
      "selection": false,
      "highlight": false,
      "dataPointLimit": 50
    },
    "information": {
      "name": "Spike Map",
      "description": "For Standalone Deneb Only",
      "author": "Kerry Kolosko",
      "uuid": "be3a25e1-f14b-4e0d-9400-0604a5ff2af3",
      "generated": "2022-05-23T13:03:39.024Z"
    },
    "dataset": [
      {
        "key": "__0__",
        "name": "index",
        "description": "grain",
        "type": "text",
        "kind": "column"
      },
      {
        "key": "__1__",
        "name": "size",
        "description": "scale of spikes",
        "type": "numeric",
        "kind": "measure"
      },
      {
        "key": "__2__",
        "name": "lat",
        "description": "latitude",
        "type": "numeric",
        "kind": "measure"
      },
      {
        "key": "__3__",
        "name": "lon",
        "description": "longitude",
        "type": "numeric",
        "kind": "measure"
      }
    ]
  },
  "config": {
    "autosize": {
      "type": "fit",
      "contains": "padding"
    },
    "view": {"stroke": "transparent"},
    "font": "Segoe UI",
    "arc": {},
    "area": {
      "line": true,
      "opacity": 0.6
    },
    "bar": {},
    "line": {
      "strokeWidth": 3,
      "strokeCap": "round",
      "strokeJoin": "round"
    },
    "path": {},
    "point": {
      "filled": true,
      "size": 75
    },
    "rect": {},
    "shape": {},
    "symbol": {
      "strokeWidth": 1.5,
      "size": 50
    },
    "text": {
      "font": "Segoe UI",
      "fontSize": 12,
      "fill": "#605E5C"
    },
    "axis": {
      "ticks": false,
      "grid": false,
      "domain": false,
      "labelColor": "#605E5C",
      "labelFontSize": 12,
      "titleFont": "wf_standard-font, helvetica, arial, sans-serif",
      "titleColor": "#252423",
      "titleFontSize": 16,
      "titleFontWeight": "normal"
    },
    "axisQuantitative": {
      "tickCount": 3,
      "grid": true,
      "gridColor": "#C8C6C4",
      "gridDash": [1, 5],
      "labelFlush": false
    },
    "axisBand": {"tickExtra": true},
    "axisX": {"labelPadding": 5},
    "axisY": {"labelPadding": 10},
    "header": {
      "titleFont": "wf_standard-font, helvetica, arial, sans-serif",
      "titleFontSize": 16,
      "titleColor": "#252423",
      "labelFont": "Segoe UI",
      "labelFontSize": 13.333333333333332,
      "labelColor": "#605E5C"
    },
    "legend": {
      "titleFont": "Segoe UI",
      "titleFontWeight": "bold",
      "titleColor": "#605E5C",
      "labelFont": "Segoe UI",
      "labelFontSize": 13.333333333333332,
      "labelColor": "#605E5C",
      "symbolType": "M-0.5 0 Q0 -15 0.5 0",
      "direction": "horizontal",
      "orient": "bottom-right",
      "values": [100, 500, 1000],
      "ticks": 3,
      "symbolSize": 75
    }
  },
  "data": {"name": "dataset"},
  "layer": [
    {
      "data": {
        "url": "https://raw.githubusercontent.com/vega/vega/main/docs/data/us-10m.json",
        "format": {
          "type": "topojson",
          "feature": "states"
        }
      },
      "projection": {
        "type": "albersUSA"
      },
      "mark": {
        "type": "geoshape",
        "fill": "white",
        "stroke": "grey"
      }
    },
    {
      "data": {"name": "dataset"},
      "projection": {
        "type": "albersUSA"
      },
      "mark": {
        "type": "point",
        "tooltip": true,
        "filled": true,
        "fillOpacity": 0.3,
        "stroke": "purple",
        "strokeWidth": 0.5
      },
      "encoding": {
        "longitude": {
          "field": "__3__",
          "type": "quantitative"
        },
        "latitude": {
          "field": "__2__",
          "type": "quantitative"
        },
        "size": {
          "field": "__1__",
          "legend": {
            "values": [10, 100, 1000],
            "ticks": 3,
            "title": ""
          }
        },
        "color": {"value": "purple"},
        "scale": {"type": "linear"},
        "shape": {
          "datum": "spike",
          "scale": {
            "domain": ["spike"],
            "range": [
              "M-0.5 0 Q0 -10 0.5 0"
            ]
          },
          "legend": false
        }
      }
    }
  ]
}

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