我在哪裏可以找到spatstat中類對象的定義

Question

我想知道類Spatialpolygons的對象與類Polygons的對象有什麼樣的信息。

Answer 1

如果您Polygon或SpatialPolygons打開幫助頁面（其實並不重要，它會引導你到相同的頁面），您可以點擊SpatialPolygons-class和Polygons-class鏈接。在那裏，你可以看到每個類包含哪些插槽。

Polygon-class爲例：

Slots 

ringDir: 
    Object of class "integer"; the ring direction of the ring (polygon) coordinates, holes are expected to be anti-clockwise 
labpt: 
    Object of class "numeric"; an x, y coordinate pair forming the label point of the polygon 
area: 
    Object of class "numeric"; the area of the polygon 
hole: 
    Object of class "logical"; does the polygon seem to be a hole 
coords: 
    Object of class "matrix"; coordinates of the polygon; first point should equal the last point