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我希望从 las 文件中获取最小值和最大值。按照文档,我可以读写一个 .las 文件。但是,我不知道如何获得最小值和最大值。我可以单独获得最小值或最大值 x ,y ,z。但是,我想查看最大值或最小值的点。有什么建议么