Large spatial data are becoming more and more popular in environmental science and other related fields....

To monitor the incidence rates of cancers,AIDS,cardiovascular diseases,and other chronicle or infectious diseases,some g......

基态修正法是目前时空数据建库中较为通用的一种方法,一般采用基态不变,增量变的形式进行数据存储,为提高检索速度,对增量可以实施......