在Web GIS迅猛发展的今天,使用浏览器来进行交互以其方便性.快捷性被广大用户所推崇,那么在传输格式方面,都已比較简单的JSON或者WKT来解决网络带宽带来的数据压力. 在ArcGIS10.2版本号,已经提供了Geometry与JSON的相互转换.并且在现实业务中.Geometry与WKT的相互转换也比較多见.比如在ArcSDE环境中,用户能够使用Esri或者原生提供的函数来进行转换. SQL> select sde.st_astext(shape) from city where objec
OpenCASCADE Shape Location eryar@163.com Abstract. The TopLoc package of OpenCASCADE gives resources to handle 3D local coordinate systems called Locations. A Location is a composition of elementary coordinate systems, each one is called a Datum. The