WKT是什么?关于坐标系统的。谁能详细解释一下?答:SPHEROID["WGS 84", 6378137, 298.257223563, AUTHORITY["EPSG", "7030"]],AUTHORITY["EPSG", "6326"]],PRIMEM["Greenwich", 0, AUTHORITY["EPSG", "8901"]],UNIT["degree", 0.0174532925199433, AUTHORITY["EPSG", "9122"]],AUTHORITY["EPSG", "4326"]]投影坐标系的格式:<projected cs...
谁能解释一下EPSG:4326坐标系,还有EPSG:900913坐标系,还有各自的表示方 ...答:GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84", 6378137, 298.257223563, AUTHORITY["EPSG", "7030"]], AUTHORITY["EPSG", "6326"]], PRIMEM["Greenwich", 0, AUTHORITY["EPSG", "8901"]], UNIT["degree", 0.0174532925199433, AUTHORITY["EPSG", "9122"]], AUTHORITY["...