【解决办法】datasetOverlayResults的叠加分析中多面要素参考如下：
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"points": [
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{ "y": 2189716.1041539256, "x": 12097717.93112904 }
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{ "y": 2189695.6714484845, "x": 12097750.330666834 }
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{ "y": 2189722.842328047, "x": 12097707.564501455 }
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{ "y": 2240094.9565072134, "x": 12287515.141545096 }
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"type": "REGION"
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