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Openlayers ???????

? Openlayers ?????????????????????????????????? Openlayers ?????????????????????

### ??Openlayers ???????

Openlayers ?????????? GIS??????????????????????????????????????????????????????????????????? Openlayers?????????????????????

### ???????Guangdong.json ????

???????????????????????????? Guangdong.json ????????? Openlayers ???????????

Guangdong.json ????????????? GeoJSON ??????????{ "type": "Feature", "properties": { ... }, "geometry": { ... } }???????????????????????????????????

### ???????????

?? Openlayers???????????? Guangdong.json ??????? JSON ???? Openlayers ????????????????? GeoJSON ???????????????? GeoJSON ????????????????????????

???Openlayers ????????????????????????????????????????????????????????????

### ???????

?????????????? Openlayers ???????????????????Guangdong.json ??????????? Openlayers ????????????????????????? Openlayers ??? GIS ???? QGIS?ArcGIS ???????????????????

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