chartDp_city/test/city/ChartCityMapSH/data/heat.json

[{"type":"heat", "id": "heat1", "name": "业务密集趋势",
	"style": {
		"colors": ["#0107fd", "#01fd01", "#fb522b"],
		"maxValue": 1,
		"maxSize": 200,
		"minSize": 2,
		"gridSize": 20
	},
	"data":[{"long":121.52,"lat":31.24025,"value":1}, {"long":121.52,"lat":31.248,"value":0.6}, {"long":121.5,"lat":31.25,"value":0.8}]
}]