COSCUP 2017 議程表 in VEGA

coscup2017.vg.json

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  "width": 480,
  "height": 1600,
  "padding": 50,
  "data":[
    { "name": "table",
       "url": "https://coscup.org/2017-assets/json/submissions.json",
       "format": {"type":"json", "parse":{"start":"date", "end": "date"}},
       "transform": [
          {
            "type": "filter",
            "expr": "datum.start >= datetime(2017, 8-1, day) && datum.end < datetime(2017, 8-1,day+1)"
          }
        ]
    }
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      "name": "xscale",
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      "domain": {"data": "table", "field": "room", "sort": true},
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    },
    {
      "name": "yscale",
      "type": "time",
      "domain": {"data": "table", "fields": ["start", "end"]},
      "range": "height",
      "reverse": true
    },
    {
      "name": "color",
      "type": "ordinal",
      "domain": {"data": "table", "field": "community"},
      "range": {"scheme": "category20"}
    }
  ],
  "axes": [
    { "orient": "top", "scale": "xscale" },
    { "orient": "bottom", "scale": "xscale" },
    { "orient": "left", "scale": "yscale" }
  ],
  "marks": [
    {
      "type": "rect",
      "from": {"data":"table"},
      "encode": {
        "enter": {
          "tooltip": {"field": "subject"},
           "fill": {"scale": "color", "field": "community"}
        },
        "update": {
          "xc": {"scale": "xscale", "field": "room", "band":0.5},
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          "y2": {"scale": "yscale", "field": "end"}
        }
      }
    }
  ],
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