A sample object of class "SpatialPolygonsDataFrame"{sp} representing the boundary of Wind Cave National Park
的样本类的对象“SpatialPolygonsDataFrame”{sp}:表示风洞国家公园的边界
用法----------Usage----------
data(wica.bdy)
格式----------Format----------
Formal class "SpatialPolygonsDataFrame" [package "sp"] with 5 slots
正式的课堂“SpatialPolygonsDataFrame”包“SP”]与5个插槽
源----------Source----------
Prepared in October 2010 from an ESRI shapefile provided by Kevin Kovacs, NPS Wind Cave National Park
2010年10月编制的ESRI的shapefile由凯文·科瓦奇,NPS风洞国家公园