Therefore, the efficient index technology should be used to raise the efficiency of spatial data processing.
因此必须借助高效的索引技术来提高空间数据的处理效率。
Nowadays the applications of spatial data similarity search are widely needed, and high dimensional spatial data index becomes a key technology of similarity search.
目前空间数据相似性查询有着广泛的应用需求，解决相似性查询问题的一项关键技术就是高维空间数据索引。
A method to monitor drought using crop water stress index which is based on GIS technology combined with remote sensing data, graph and meteorological data was presented.
该文主要研究利用遥感技术资料，基于GIS技术，通过作物缺水指数模型监测旱情的方法。
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