titanic_vl.json

{
  "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
  "data": {"url": "https://raw.githubusercontent.com/agconti/kaggle-titanic/master/data/train.csv","format": {
    "type": "csv"
  }},
  "transform": [
    {"calculate": "1", "as": "number"},
    {"stack": "number","groupby": ["Pclass" ], "as":["v1", "v2"],"offset": "center",
    "sort": {"field": "Survived", "order": "ascending"}},
    {"stack": "number", "groupby": ["Sex"], "as": ["v3", "v4"],"offset": "center"}
  ],
  "mark": "rect",
  "encoding": {
    "x": {
      "field": "v3",
      "type": "ordinal"
    },
    "x2": {
      "field": "v4",
      "type": "ordinal"
    },
    "y": {
      "field": "v1",
      "type": "quantitative"
    },
    "y2": {
      "field": "",
      "type":"quantitative"
    }}
  }