How to ascertain boundary envelop of error model is not only of the importance for GIS uncertainty theory, but also the critical index for GIS uncertainty visualization research.
误差模型包络线是GIS位置不确定性研究的重要内容，是GIS可视化研究的关键指标。
How to ascertain boundary envelop of error model is not only of the importance for GIS uncertainty theory, but also the critical index for GIS uncertainty visualization research.
误差模型包络线是GIS位置不确定性研究的重要内容，是GIS可视化研究的关键指标。
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