choropleth2.vl

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    "width": 1200,
    "$schema": "https://vega.github.io/schema/vega-lite/v3.json",
    "layer": [
        {
            "mark": {
                "strokeWidth": 2,
                "stroke": "rgb(251,247,238)",
                "type": "geoshape"
            },
            "data": {
                "url": "https://vega.github.io/vega-lite/data/londonBoroughs.json",
                "format": {
                    "feature": "boroughs",
                    "type": "topojson"
                }
            },
            "encoding": {
                "color": {
                    "field": "id",
                    "scale": {
                        "domain": [
                            "Kingston upon Thames",
                            "Croydon",
                            "Bromley",
                            "Hounslow",
                            "Ealing",
                            "Havering",
                            "Hillingdon",
                            "Harrow",
                            "Brent",
                            "Barnet",
                            "Lambeth",
                            "Southwark",
                            "Lewisham",
                            "Greenwich",
                            "Bexley",
                            "Enfield",
                            "Waltham Forest",
                            "Redbridge",
                            "Sutton",
                            "Richmond upon Thames",
                            "Merton",
                            "Wandsworth",
                            "Hammersmith and Fulham",
                            "Kensington and Chelsea",
                            "Westminster",
                            "Camden",
                            "Tower Hamlets",
                            "Islington",
                            "Hackney",
                            "Haringey",
                            "Newham",
                            "Barking and Dagenham",
                            "City of London"
                        ],
                        "range": [
                            "#9db7b1",
                            "#d4b4e5",
                            "#afb9cb",
                            "#b2add6",
                            "#e2f8ca",
                            "#a1bde6",
                            "#e8aa95",
                            "#8bd0eb",
                            "#dfb89b",
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                            "#e3aba7",
                            "#86cbd1",
                            "#ecb1c2",
                            "#acd8ba",
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                            "#9bd6ca",
                            "#cec9f3",
                            "#c9d2a8",
                            "#d1c1d9",
                            "#ddcba2",
                            "#a2acbd",
                            "#deefd6",
                            "#b5d7a7",
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                            "#d9b9ad",
                            "#c6e1db",
                            "#e0c7ce",
                            "#a6b79f",
                            "#cbd5e7",
                            "#c2d2ba",
                            "#ebe2cf",
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                        ]
                    },
                    "type": "nominal",
                    "legend": null
                },
                "opacity": {
                    "value": 1
                }
            }
        },
        {
            "transform": [
                {
                    "as": "bLabel",
                    "calculate": "indexof (datum.name,' ') > 0  ? substring(datum.name,0,indexof(datum.name, ' ')) : datum.name"
                }
            ],
            "mark": "text",
            "data": {
                "url": "https://vega.github.io/vega-lite/data/londonCentroids.json"
            },
            "encoding": {
                "text": {
                    "field": "bLabel",
                    "type": "nominal"
                },
                "latitude": {
                    "field": "cy",
                    "type": "quantitative"
                },
                "longitude": {
                    "field": "cx",
                    "type": "quantitative"
                }
            }
        }
    ]
}