Kibana rotating cloropleth world map

rotating_world_map.hjson

{
  $schema: https://vega.github.io/schema/vega/v3.json
  padding: 10
  config: {
    kibana: {tooltips: false}
  }
  signals: [
    {
      name: rotation
      value: 65
      bind: {input: "range", min: -180, max: 180}
    }
  ]
  data: [
    {
      name: events
      url: {
        %context%: true
        %timefield%: @timestamp
        index: logstash-*
        body: {
          size: 0
          aggs: {
            by_country: {
              terms: {
                field: geoip.country_code2.keyword
                size: 500
                order: {_count: "desc"}
              }
            }
          }
        }
      }
      format: {property: "aggregations.by_country.buckets"}
    }
    {
      name: sphere
      values: [
        {type: "Sphere"}
      ]
    }
    {
      name: countries
      url: {%type%: "emsfile", name: "World Countries"}
      format: {property: "features"}
      transform: [
        {
          type: formula
          expr: datum.properties.iso2
          as: countryCode
        }
        {
          type: lookup
          from: events
          key: key
          fields: ["countryCode"]
          values: ["doc_count"]
          as: ["count"]
        }
      ]
    }
  ]
  projections: [
    {
      name: projection
      scale: {signal: "min(width,height)/2*0.9"}
      type: orthographic
      translate: {signal: "[width/2, height/2]"}
      rotate: [
        {signal: "rotation"}
        -20
        0
      ]
    }
  ]
  scales: [
    {
      name: color
      type: sqrt
      domain: {data: "countries", field: "count"}
      range: {scheme: "Reds"}
    }
  ]
  marks: [
    {
      type: shape
      from: {data: "sphere"}
      encode: {
        update: {
          fill: {value: "aliceblue"}
          stroke: {value: "black"}
          strokeWidth: {value: 1.5}
        }
      }
      transform: [
        {type: "geoshape", projection: "projection"}
      ]
    }
    {
      type: shape
      from: {data: "countries"}
      encode: {
        update: {
          fill: {field: "count", scale: "color"}
          stroke: {value: "black"}
          strokeWidth: {value: 0.35}
          tooltip: {
            signal:
              '''
              {
              title: datum.properties.name,
              code: datum.countryCode,
              count: datum.count,
              }
              '''
          }
        }
      }
      transform: [
        {type: "geoshape", projection: "projection"}
      ]
    }
  ]
}