Extension:Graph/Demo/HistoricalFertilityRates

<graph mode=interactive title="Historical Fertility Rates">

{
  "version": 2,
  "width": 500,
  "height": 260,
  "padding": 12,
  "background": "#edf1f7",
  "signals": [
    {
      "name": "isDragging",
      "init": false,
      "streams": [
        {"type": "@handle:mousedown","expr": "true"},
        {"type": "mouseup","expr": "false"}
      ]
    },
    {
      "name": "scaledHandlePosition",
      "streams": [
        {
          "type": "mousemove[isDragging]",
          "expr": "eventX()",
          "scale": {"name": "yearsScale","invert": true}
        }
      ]
    },
    {
      "name": "currentYear",
      "init": 2000,
      "expr": "clamp(parseInt(scaledHandlePosition),1960,2013)"
    },
    {
      "name": "tooltipSignal",
      "init": {"expr": "{x: 0, y: 0, datum: {} }"}, 
      "streams": [
        {  
          "type": "@map:mouseover",    
          "expr": "{x: eventX(), y: eventY(), datum: eventItem().datum.zipped}"
        },
        {  
          "type": "@map:mouseout",
          "expr": "{x: 0, y: 0, datum: {} }"
        }
      ] 
    }
  ],
  "data": [
    {
      "name": "highlights",
      "url": "wikiraw:///Extension:Graph/Demo/RawData:FertilityByCountryHistoric-csv",
      "format": {"type": "csv"},
      "transform": [
        {
          "type": "formula",
          "field": "v",
          "expr": "parseFloat(datum[''+currentYear])"
        }
      ]
    },
    {
      "name": "countries",
      "url": "wikiraw:///Extension:Graph/Demo/RawData:WorldMap-iso3-json",
      "format": {"type": "topojson","feature": "countries"},
      "transform": [
        {
          "type": "geopath",
          "value": "data",
          "scale": 80,
          "center": [-180,125],
          "translate": [0,0],
          "projection": "equirectangular"
        },
        {
          "type": "lookup",
          "keys": ["id"],
          "on": "highlights",
          "onKey": "id",
          "as": ["zipped"],
          "default": {"v": null, "country":"No data"}
        }
      ]
    }
  ],
  "scales": [
    {
      "name": "yearsScale",
      "type": "linear",
      "zero": false,
      "domain": [1960,2013],
      "range": "width"
    },
    {
      "name": "color",
      "type": "linear",
      "domain": {"data": "countries","field": "zipped.v"},
      "domainMin": 1,
      "zero": false,
      "range":  ["#FFEDBC", "#f83600"]
    }
  ],
  "marks": [
    {
      "name": "yearLabel",
      "type": "text",
      "properties": {
        "enter": {
          "x": {"value": 0},
          "y": {"value": 25},
          "fontSize": {"value": 32},
          "fontWeight": {"value": "bold"},
          "fill": {"value": "steelblue"}
        },
        "update": {"text": {"signal": "currentYear"} }
      }
    },
    {
      "name": "scrollLine",
      "type": "rule",
      "properties": {
        "enter": {
          "x": {"value": 0},
          "y": {"value": 40},
          "x2": {"value": 500},
          "stroke": {"value": "#000"},
          "strokeWidth": {"value": 2}
        }
      }
    },
    {
      "name": "handle",
      "type": "path",
      "properties": {
        "enter": {
          "y": {"value": 40},
          "path": {"value": "m-5.5,-10l0,20l11.5,-10l-11.5,-10z"},
          "stroke": {"value": "#880"},
          "strokeWidth": {"value": 2.5}
        },
        "update": {
          "x": {"scale": "yearsScale","signal": "currentYear"},
          "fill": {"value": "#fff"}
        },
        "hover": {"fill": {"value": "#f00"} }
      }
    },
    {
      "name": "map",
      "type": "path",
      "from": {"data": "countries"},
      "properties": {
        "enter": {"path": {"field": "layout_path"} },
        "update": {
          "fill": [
            {
              "test": "datum.zipped.v !== null",
              "scale": "color",
              "field": "zipped.v"
            },
            {"value": "grey"}
          ]
        },
        "hover": {"fill": {"value": "#989898"} }
      }
    },
    {
      "type": "text",
      "properties": {
        "enter": {
          "x": {"value": 500},
          "y": {"value": 10},
          "align": {"value": "right"},
          "fontSize": {"value": 17},
          "fill": {"value": "black"}
        },
        "update": {
          "text": {"template": "\u007b{tooltipSignal.datum.country}\u007d \u007b{tooltipSignal.datum.v}\u007d"}
        }
      }
    }
  ],
  "legends": [
    {
      "fill": "color",
      "title": "Fertility",
      "offset": -300,
      "properties": {
        "gradient": {
          "stroke": {"value": "transparent"}
        },
        "title": {
          "fontSize": {"value": 14}
        },
        "legend": {
          "x": {"value": 0},
          "y": {"value": 180}
        }
      }
    }
  ]
}

</graph>