栅格数据模型 meaning in Chinese

raster data model

In the raster data model , the map s accuracy also depends on the map s scale
在栅格数据模型中，地图的准确性还依赖于地图的比例。
This paper supplies systematic research on data organization method which is suitable for hngis , at the same time studies deeply on the optimization of transit route with many goals in highway network . ( 1 ) based on the systematic analysis on the spatial data model and the spatial data structure , through study on two kinds of commonly used gis data models : raster data model , vector data model and the characteristics of highway network , the paper plans the logistic data model of hngis , and proposed the spatial data storing structure based on vector method
本文系统的研究了适合于公路网gis的数据组织方法，同时，对公路网多目标最优出行路径问题也给予了深入的研究： ( 1 )通过对两种常用的gis数据模型(矢量数据模型、栅格数据模型)及对公路网络特征的分析，设计了公路网gis的逻辑数据模型，给出了基于矢量方法的空间数据存储结构。