raster gis meaning in English

数据地理信息系统

The integrated information units could be identified by a variety of methods according to different data types and issues including overlay - operation for vector gis , cell - partition for raster gis , and for some cases , synthetical consideration based on special treatment or expert - knowledge
针对不同的相关因子以及数据类型，综合信息元可以采用数据叠加法、综合法和网格划分法等进行构建。