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interactive_geo_earthquakes.vg.json
139 lines (139 loc) · 3.93 KB
/
interactive_geo_earthquakes.vg.json
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{
"$schema": "https://vega.github.io/schema/vega/v5.json",
"background": "white",
"padding": 5,
"width": 300,
"height": 300,
"data": [
{"name": "source_0", "values": [{"type": "Sphere"}]},
{
"name": "world",
"url": "data/world-110m.json",
"format": {"type": "topojson", "feature": "countries"}
},
{
"name": "earthquakes",
"url": "data/earthquakes.json",
"format": {"type": "json", "property": "features"},
"transform": [
{
"type": "formula",
"expr": "datum.geometry.coordinates[0]",
"as": "longitude"
},
{
"type": "formula",
"expr": "datum.geometry.coordinates[1]",
"as": "latitude"
},
{
"type": "filter",
"expr": "(rotate0 * -1) - 90 < datum.longitude && datum.longitude < (rotate0 * -1) + 90 && (rotate1 * -1) - 90 < datum.latitude && datum.latitude < (rotate1 * -1) + 90"
},
{"type": "formula", "expr": "datum.properties.mag", "as": "magnitude"},
{
"type": "geojson",
"fields": ["longitude", "latitude"],
"signal": "layer_2_geojson_0"
},
{
"type": "geopoint",
"projection": "projection",
"fields": ["longitude", "latitude"],
"as": ["layer_2_x", "layer_2_y"]
},
{
"type": "filter",
"expr": "isValid(datum[\"magnitude\"]) && isFinite(+datum[\"magnitude\"])"
}
]
}
],
"projections": [
{
"name": "projection",
"size": {"signal": "[width, height]"},
"fit": {"signal": "[data('source_0'), data('world'), layer_2_geojson_0]"},
"type": "orthographic",
"rotate": {"signal": "[rotate0, rotate1, 0]"}
}
],
"signals": [
{
"name": "rotate0",
"value": 0,
"bind": {"input": "range", "min": -90, "max": 90, "step": 1}
},
{
"name": "rotate1",
"value": 0,
"bind": {"input": "range", "min": -90, "max": 90, "step": 1}
},
{
"name": "earthquakeSize",
"value": 6,
"bind": {"input": "range", "min": 0, "max": 12, "step": 0.1}
}
],
"marks": [
{
"name": "layer_0_marks",
"type": "shape",
"style": ["geoshape"],
"from": {"data": "source_0"},
"encode": {
"update": {
"fill": {"value": "aliceblue"},
"ariaRoleDescription": {"value": "geoshape"}
}
},
"transform": [{"type": "geoshape", "projection": "projection"}]
},
{
"name": "layer_1_marks",
"type": "shape",
"style": ["geoshape"],
"from": {"data": "world"},
"encode": {
"update": {
"fill": {"value": "mintcream"},
"stroke": {"value": "black"},
"ariaRoleDescription": {"value": "geoshape"}
}
},
"transform": [{"type": "geoshape", "projection": "projection"}]
},
{
"name": "layer_2_marks",
"type": "symbol",
"style": ["circle"],
"from": {"data": "earthquakes"},
"encode": {
"update": {
"opacity": {"value": 0.25},
"fill": {"value": "red"},
"tooltip": {
"signal": "{\"magnitude\": isValid(datum[\"magnitude\"]) ? datum[\"magnitude\"] : \"\"+datum[\"magnitude\"]}"
},
"ariaRoleDescription": {"value": "circle"},
"description": {
"signal": "\"longitude: \" + (format(datum[\"longitude\"], \"\")) + \"; latitude: \" + (format(datum[\"latitude\"], \"\")) + \"; magnitude: \" + (format(datum[\"magnitude\"], \"\"))"
},
"x": {"field": "layer_2_x"},
"y": {"field": "layer_2_y"},
"size": {"scale": "size", "field": "magnitude"},
"shape": {"value": "circle"}
}
}
}
],
"scales": [
{
"name": "size",
"type": "sqrt",
"domain": [0, 100],
"range": [0, {"signal": "pow(earthquakeSize, 3)"}],
"zero": true
}
]
}