A sample object of class gpc.poly for use in polygon clipping. The class is provided by package gpclib, which is subject to a restricted license and is not free for commercial use.
对象的类gpc.poly中使用的多边形裁剪的一个样本。这个类所提供的套件“gpclib,这是有限制牌照,不用于商业用途。
用法----------Usage----------
data(wica.gpc)
源----------Source----------
Derived from wica.bdy. For purposes of illustration, wica.hole.gpc includes a fictitious "hole."
来自wica.bdy。为了说明,wica.hole.gpc包含一个虚构的“洞”。