基于ArcGIS的矢量数据单元提取栅格值的方法实现

Approach of Extraction of Raster Data Value Based on Vector Data Units

矢量和栅格是地理信息系统中2种基本的数据结构形式,在处理过程中2种形式之间可以相互转换。该文基于Arc GIS软件,提出了以特定的矢量数据单元来提取栅格数据值的方法实现,间接达到栅格数据向矢量数据转换的目的。该方法为耕地地力评价工作中利用采样点空间插值得到的栅格数据向耕地资源管理单元图赋养分值提供了有价值的参考。

Raster and vector are the two basic forms of data structure of geographic information sys-tem,and the two forms can be converted to each other in the process. In this paper,based on the Arc-GIS software,the method of extraction of raster data value by vector data units is put forward,indirect-ly achieving raster data conversion to vector. The method provides a valuable reference in farmland fertili-ty evaluation.It can be used to extract raster data nutrient contents by farmland management units.