【摘要】 以桌面地理信息系统 (GIS)软件为支撑 ,在 1∶10 0万的电子地图的基础上 ,通过站号建立站点属性表与站点不同历时参数值的对应关系 ,形成包含经纬度的站点不同历时参数值的表 ,最后利用地理信息系统有关软件勾绘等值线图更多还原

【Abstract】 Using a table geographical information system ( GIS ) software, it can be done to establish the corresponding relations of attribution table and parameter value in different periods of substations on a electronic map of 1: 1,000,000 and a table contained parameter values of substations, which longitudes and latitudes are showed clearly, in different time periods. At last, isograph can be drawn by geographical information system software.更多还原