View source for Template:Choropleth world map


<includeonly>{{#tag:graph|
{ 
  //TODO remove the year variables, which are a hangover from the source version which generated a slider for seeing multiple year values
  "width": {{{width|600}}},
  "height": {{{height|250}}},
  "signals": [
    { "name": "initYear", "init": {{{year}}} },
    { "name": "gapHeight", "init": 0 },
    {
      // Hide overview if total height is too small
      "name": "showOverview",
      "init": {"expr": "{{#if: {{{hideoverview|}}} | false | true }} {{!}}{{!}} height < (gapHeight + 0)" }
    },
    { "name": "overviewHeight", "init": {"expr": "showOverview ? 0 : 0" } },
    { "name": "detailHeight", "init": {"expr": "height - (showOverview ? overviewHeight + gapHeight : 0)" } },
    { "name": "overviewYPos", "init": {"expr": "height - overviewHeight" } },
    { "name": "mapXC", "init": {"expr": "width/2"} },
    { "name": "mapYC", "init": {"expr": "overviewYPos/2"} },
    {
      "name": "brush_start",
      "streams": [{
        "type": "@overview:mousedown, @overview:touchstart", 
        "expr": "clamp(eventX(), 0, width)",
        "scale": {"name": "xOverview", "invert": true}
      }]
    },
    {
      "name": "brush_end",
      "streams": [{
        "type": "@overview:mousedown, [@overview:mousedown, window:mouseup] > window:mousemove, @overview:mouseup, @overview:touchstart, [@overview:touchstart, window:touchend] > window:touchmove, @overview:touchend",
        "expr": "clamp(eventX(), 0, width)",
        "scale": {"name": "xOverview", "invert": true}
      }]
    },
    {
      "name": "fromYear", 
      "init": {"expr": "initYear"},
      "expr": "year(min(brush_start, brush_end))"
    },
    {
      "name": "toYear",
      "init": {"expr": "initYear"},
      "expr": "year(max(brush_start, brush_end))"
    },
    {
      "name": "isRange", 
      "init": {"expr": "false"},
      "expr": "fromYear !== toYear"
    },
    {
      "name": "tooltip",
      "init": {"expr": "{x: 0, y: 0, datum: false }"}, 
      "streams": [
        {"type": "@map:mouseout, @map:touchstart", "expr": "{x: 0, y: 0, datum: false }" },
        {"type": "@map:mouseover, @map:touchstart", "expr": "{x: eventX(), y: eventY(), datum: eventItem().datum.lookup}" }
      ]
    }
  ],
  "data": [{
    "name": "data",
    "url": "tabular:///{{{table}}}",
    "format": {"type": "json", "property": "data"},
    "transform": [
      { "type": "formula", "field": "value", "expr": "datum.{{{column}}}" }
    ]
  },{
    "name": "totals",
    "source": "data",
    "transform": [
      {
      	"type": "aggregate",
      	"groupby": ["year"],
        "summarize": [{"field": "value", "ops": ["sum"], "as": ["total"]}]
      },
      { "type": "formula", "field": "date", "expr": "datetime(datum.year, 0, 1)" }
    ]
  },{
    // Select just the source data for the starting year
    "name": "firstYearData",
    "source": "data",
    "transform": [{"type": "filter", "test": "datum.year === fromYear"}]
  },{
    // Select just the source data for the ending year
    "name": "yearData",
    "source": "data",
    "transform": [{
      "type": "filter", "test": "datum.year === toYear"
    },{
      "type": "sort", "by": ["-value"]
    },{
      "type": "rank", "field": "country"
    },{
      "type": "lookup",
      "on": "firstYearData",
      "onKey": "country",
      "keys": ["country"],
      "as": ["firstYear"],
      "default": null
    },{
      "type": "formula", "field": "calc", "expr": "if(isRange, (datum.value - datum.firstYear.value)/datum.firstYear.value, datum.value)"
    }]
  },{
    "name": "mapData",
    "url": "map:///Naturalearthdata.com/admin-0-countries-no-antarctica.map",
    "format": {"type": "json", "property": "data.features"},
    "transform": [{
      "type": "geopath",
      "projection": "equirectangular",
      "scale": 108,
      "translate": [{"expr": "mapXC"}, {"expr": "mapYC"}]
    },{
    	"type": "formula",
    	"field": "my_id",
    	"expr": "datum.properties.iso_a3 {{!}}{{!}} datum.properties.adm0_a3"
    },{
      "type": "lookup",
      "on": "yearData",
      "onKey": "country",
      "keys": ["my_id"],
      "as": ["lookup"],
      "default": 100
    }]
  },{
    "name": "dummyValue",
    "values": [{}]
  }],
  "scales": [{
    "name": "color",
    "type": "sqrt",
    "domain": {"data": "yearData", "field": "calc"},
    "range": ["#eee", "#c00000"],
    "zero": false,
    "clamp": true
  },{
    "name": "diffColor",
    "type": "linear",
    "domain": [-1, -0.8, -0.6, -0.3, -0.1, 0, 0.1, 0.3, 0.6, 0.8, 1],
    "range": ["#313695", "#4575b4", "#74add1", "#abd9e9", "#e0f3f8", "#ffffbf", "#fee090", "#fdae61", "#f46d43", "#d73027", "#a50026"],
    "zero": false,
    "clamp": true
  },{
      "name": "xOverview",
      "type": "time",
      "range": "width",
      "domain": {"data": "totals", "field": "date"}
  },{
      "name": "yOverview",
      "type": "linear",
      "rangeMin": {"signal": "overviewHeight"},
      "nice": true,
      "zero": false,
      "domain": {"data": "totals", "field": "total"}
  }],
  "marks": [{
    "type": "group",
    "name": "detail",
    "properties": {
      "enter": {
        "height": {"signal": "detailHeight"},
        "width": {"signal": "width"}
    } },
    "marks": [{
      "name": "map",
      "type": "path",
      "from": {"data": "mapData"},
      "properties": {
        "enter": {
          "stroke": {"value": "#fff"},
          "path": {"field": "layout_path"}
        },
        "update": {
          "fill": [
            {"test": "isRange", "field": "lookup.calc", "scale": "diffColor"},
            {"field": "lookup.calc", "scale": "color"}
          ],
          "stroke": {"value": "#fff"}
        },
        "hover": {"fill": {"value": "#989898"}, "stroke": {"value": "#000"} }
      }
    }]
  },
{
    "name": "tooltip",
      "type": "group",
      "from": {
        "data": "dummyValue",
        "transform": [
          {"type": "filter", "test": "tooltip.datum && tooltip.datum.calc"},
          {"type": "formula", "field": "offsetX", "expr": "5"},
          {"type": "formula", "field": "offsetY", "expr": "30"},
          {"type": "formula", "field": "tipWidth", "expr": "200"},
          {"type": "formula", "field": "tipHeight", "expr": "51"},
          {"type": "formula", "field": "alignLeft", "expr": "tooltip.x > width - datum.offsetX - datum.tipWidth"},
          {"type": "formula", "field": "alignTop", "expr": "tooltip.y > height - datum.offsetY - datum.tipHeight"},
          {"type": "formula", "field": "x", "expr": "max(0, tooltip.x + (datum.alignLeft ? -datum.offsetX-datum.tipWidth : datum.offsetX ))"},
          {"type": "formula", "field": "y", "expr": "tooltip.y + (datum.alignTop ? -1 : 1) * datum.offsetY"},
          {"type": "formula", "field": "lookupCountry", "expr": "tooltip.datum.country"},
	      {
	        "type": "lookup",
	        "on": "mapData",
	        "onKey": "my_id",
	        "keys": ["lookupCountry"],
	        "as": ["mapDataVal"],
	        "default": null
	      },
          {"type": "formula", "field": "name", "expr": "datum.mapDataVal ? datum.mapDataVal.properties.name : '?xyz?'"},
	      {
	        "type": "lookup",
	        "on": "yearData",
	        "onKey": "country",
	        "keys": ["lookupCountry"],
	        "as": ["yearDataVal"],
	        "default": null
	      },
          {"type": "formula", "field": "rank", "expr": "datum.yearDataVal ? datum.yearDataVal.rank : 1000"}
      ]},
      "properties": {
        "update": {
          "x": {"field": "x" }, "y": {"field": "y" },
          "width": {"field": "tipWidth" },
          "height": {"field": "tipHeight" },
          "fill": {"value": "#fff"},
          "fillOpacity": {"value": 0.85},
          "stroke": {"value": "#aaa"},
          "strokeWidth": {"value": 0.5}
      } },

      "marks": [
        {
          "type": "text",
          "properties": {
            "update": {
              "x": {"value": 6}, "y": {"value": 14},
              "text": {"template": "{{((}}parent.name{{))}}"},
              "fill": {"value": "black"},
              "fontWeight": {"value": "bold"}
        } } },
        {
          "type": "text",
          "properties": {
            "update": {
              "x": {"value": 6}, "y": {"value": 29},
              "text": [
                {"test": "isRange", "template": "Growth:\t{{((}}tooltip.datum.calc{{!}}number:'.1%'{{))}}"},
                {"template": "{{{columnName}}}:\t{{((}}tooltip.datum.calc{{!}}number:',.0f'{{))}}{{{|}}}"}
              ],
              "fill": {"value": "black"}
        } } },
        {
          "type": "text",
          "properties": {
            "update": {
              "x": {"value": 6}, "y": {"value": 44},
              "text": [
                {"test": "isRange", "template": ""},
                {"template": "Global position:\t#{{((}}parent.rank{{!}}number:'.0f'{{))}}"}
              ],
              "fill": {"value": "black"}
        } } },
    ]}
  ]
}
|mode=interactive}}
<small>{{#invoke:TNT|msg|Original/Template:Graphs.tab|source-table|{{#invoke:TNT|link|{{{table}}}}}}}. {{{note|}}}</small>
</includeonly><noinclude>{{documentation}}</noinclude>