{ "$schema": "https://vega.github.io/schema/vega-lite/v4.json", "description": "Stock prices of 5 Tech Companies over Time.", "data": {"url": "data/stocks.csv"}, "mark": "trail", "encoding": { "x": {"field": "date", "type": "temporal"}, "y": {"field": "price", "type": "quantitative"}, "size": {"field": "price", "type": "quantitative"}, "color": {"field": "symbol", "type": "nominal"} }}