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Template:Graph:Map with marks

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<graph>

{
  //
  // ATTENTION: This code is maintained at https://www.mediawiki.org/wiki/Template:Graph:Map_with_marks
  //            Please do not modify it anywhere else, as it may get copied and override your changes.
  //            Suggestions can be made at https://www.mediawiki.org/wiki/Template_talk:Graph:Map_with_marks
  //
  "version": 2, "width":400, "height": 200, "padding": 0,
  "signals":[
    // These signals allow us to quickly move the map within the image, e.g. to leave space for the legend
    {"name":"imgXC", "init": {"expr": "width/2"} },
    {"name":"imgYC", "init": {"expr": "height/2"} },
    {"name":"imgWidth", "init": {"expr": "width"} },
    {"name":"imgHeight", "init": {"expr": "height"} },
    // Bounding box uses [left, bottom, right, top]
    // Longitude: max left..right range is -180..180
    // Latitude: max bottom..top range is -90..90
    {"name":"imgBoundingBox", "init": {"expr": "[-180,-90,180,90]"} }
  ],
  "data": [
    {
      "name": "data",
      "values": [ 
        {"lat":20, "lon":-120, "color":"#0f0"},
        {"lat":40, "lon":-120, "shape":"diamond", "color":"#0f0", "size": 80, "text": "Some cool text", "textColor": "#0ff", "textFontSize": 20, "textBaseline": "middle"},
        // BUG!  raw SVG image will NOT render properly on the server. Make sure to specify image pixel size, e.g. "|32"
        {"lat":-10, "lon":20, "img":"wikirawupload:https://upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Volcano_red_32x32.svg/32px-Volcano_red_32x32.svg.png", "offsetY":-10},
        {"lat":0, "lon":0, "img":"wikirawupload:https://upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Volcano_red_32x32.svg/32px-Volcano_red_32x32.svg.png", "width":25, "height": 25, "offsetY":-10, "text": "Big volcano", "textFontWeight": "bold", "textFontSize": 20, "textColor": "#fff"}
        
      ],
      "transform": [
        {
          "type": "geo",
          "projection": "equirectangular",
          "scale": {"expr": "max(360/(imgBoundingBox[2]-imgBoundingBox[0]),180/(imgBoundingBox[3]-imgBoundingBox[1]))*imgWidth/2/PI"},
          "translate": [{"expr": "imgXC"}, {"expr": "imgYC"}],
          "center": [{"expr": "(imgBoundingBox[0]+imgBoundingBox[2])/2"}, {"expr": "(imgBoundingBox[1]+imgBoundingBox[3])/2"}],
          "lon": "lon", "lat": "lat"
        },
        { "type": "formula", "field":"layout_x", "expr": "datum.layout_x + (datum.offsetX || 0)" },
        { "type": "formula", "field":"layout_y", "expr": "datum.layout_y + (datum.offsetY || 0)" },
        { "type": "formula", "field":"color", "expr": "datum.color || '#ff0000'" },
        { "type": "formula", "field":"textColor", "expr": "datum.textColor || datum.color" }
      ]
    }
  ],
  "marks": [{
      "type": "image",
      "properties": {
        "enter": {
          "url": {"value": "wikirawupload:"},
          "xc": {"signal": "imgXC"}, "yc": {"signal": "imgYC"},
          "width": {"signal": "imgWidth"}, "height": {"signal": "imgHeight"}
        }
      }
    },
    {
      // Places an image of a given name and size at the [lan,lon] location
      "type": "image",
      "from": {
        "data": "data",
        "transform": [
          { "type": "filter", "test": "datum.img" },
          { "type": "formula", "field":"iconWidth", "expr": "datum.width || 0" },
          { "type": "formula", "field":"iconHeight", "expr": "datum.height || 0" }
      ]},
      "properties": {
        "enter": {
          "url": {"field": "img"},
          "xc": {"field": "layout_x"}, "yc": {"field": "layout_y"},
          "width": {"field": "iconWidth"}, "height": {"field": "iconHeight"}
        }
      }
    },
    {
      // Draw marks of a given color, shape, and size at the [lan,lon] location
      "type": "symbol",
      "from": {
        "data": "data",
        "transform": [{ "type": "filter", "test": "!datum.img" }]
      },
      "properties": {
        "enter": {
          "x": {"field": "layout_x"},
          "y": {"field": "layout_y"},
          "fill": {"field": "color"},
          "size": {"field": "size"},
          "shape": {"field": "shape"}
        }
      }
    },
    {
      // Draw text with the given color and size at the [lan,lon] location
      // See https://github.com/vega/vega/wiki/Marks#text for all parameter description (prepend "text" and capitalize them)
      "type": "text",
      "from": {
        "data": "data",
        "transform": [
          { "type": "filter", "test": "datum.text" },
          // Figure out if this is an LTR or RTL page. For LTR, show label to the right of the icon, left-aligned. For RTL, reverse.
          { "type": "formula", "field":"isLTR", "expr": "'‎' == '\\u200E'" },
          // If these values are not defined ("undefined" is not allowed, so test for truthiness and not 0)
          { "type": "formula", "field":"textDx", "expr": "if(!datum.textDx && datum.textDx != 0, if(datum.isLTR,8,-8), datum.textDx)" },
          { "type": "formula", "field":"textAlign", "expr": "if(!datum.textAlign, if(datum.isLTR,'left','right'), datum.textAlign)" },
          { "type": "formula", "field":"textBaseline", "expr": "datum.textBaseline || 'middle'" }
      ]},
      "properties": {
        "enter": {
          "text": {"field": "text"},
          "x": {"field": "layout_x" },
          "y": {"field": "layout_y"},
          "dx": {"field": "textDx" },
          "dy": {"field": "textDy"},
          "fill": {"field": "textColor"},
          "align": {"field": "textAlign"},
          "baseline": {"field": "textBaseline"},
          "radius": {"field": "textRadius"},
          "theta": {"field": "textTheta"},
          "angle": {"field": "textAngle"},
          "font": {"field": "textFont"},
          "fontSize": {"field": "textFontSize"},
          "fontWeight": {"field": "textFontWeight"},
          "fontStyle": {"field": "textFontStyle"}
        }
      }
    }
  ]
}

</graph>
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