ArcView GIS中图件比例系数及坐标位置的设置技巧

THE SKILL TO ADJUST A MAP′S SCALE AND COORDINATE IN ARCVIEW GIS

在GIS中,正确地设置坐标系统和图件的比例尺,是充分发挥系统功能,进行空间分析的前提。在ArcViewGIS中,为了使图件中的任意一点的坐标均显示为其在大地上的实际坐标,任意两点的距离均显示为大地上的实际距离,可先对扫描图件的比例尺和坐标位置进行设置,然后再矢量化。对需要添加的MAPGIS矢量化图件,应先在MAPGIS中调整比例参数和坐标位移参数,然后再进行格式转换。

In GIS, to set up coordinate system and scale correctly is a precondition that give full play to system's function and carry on space analyses. In ArcView GIS, in order to display the position of any point or the distance between two points on the map as its real coordinate or distance on the Earth, firstly, you should set up scale and scanning map coordinate, then make vectorization works. If one of the vectorized map in MAPGIS format needs to be added to the view, its proportion and coordinate must be adjusted in MAPGIS before its format is converted.