Examples for 'rgeos::gEnvelope'
Envelope of Geometry
Aliases: gEnvelope RGEOSEnvelope
Keywords: spatial
### ** Examples x = readWKT(paste("POLYGON((0 40,10 50,0 60,40 60,40 100,50 90,60 100,60", "60,100 60,90 50,100 40,60 40,60 0,50 10,40 0,40 40,0 40))")) env = gEnvelope(x) plot(x,col='blue',border='blue') plot(env,add=TRUE)
#Degenerate Cases gEnvelope(readWKT("POINT(1 1)")) #returns SpatialPoints
SpatialPoints: x y 1 1 1 Coordinate Reference System (CRS) arguments: NA
gEnvelope(readWKT("LINESTRING(1 1,1 2)")) #invalid polygon
An object of class "SpatialPolygons"
Slot "polygons":
[[1]]
An object of class "Polygons"
Slot "Polygons":
[[1]]
An object of class "Polygon"
Slot "labpt":
[1] 1.0 1.5
Slot "area":
[1] 0
Slot "hole":
[1] FALSE
Slot "ringDir":
[1] 1
Slot "coords":
x y
[1,] 1 1
[2,] 1 2
[3,] 1 2
[4,] 1 1
[5,] 1 1
Slot "plotOrder":
[1] 1
Slot "labpt":
[1] 1.0 1.5
Slot "ID":
[1] "1"
Slot "area":
[1] 0
Slot "plotOrder":
[1] 1
Slot "bbox":
min max
x 1 1
y 1 2
Slot "proj4string":
Coordinate Reference System:
Deprecated Proj.4 representation: NA
Warning in wkt(x): CRS object has no comment
gEnvelope(readWKT("LINESTRING(1 1,2 1)")) #invalid polygon
An object of class "SpatialPolygons"
Slot "polygons":
[[1]]
An object of class "Polygons"
Slot "Polygons":
[[1]]
An object of class "Polygon"
Slot "labpt":
[1] 1.5 1.0
Slot "area":
[1] 0
Slot "hole":
[1] FALSE
Slot "ringDir":
[1] 1
Slot "coords":
x y
[1,] 1 1
[2,] 1 1
[3,] 2 1
[4,] 2 1
[5,] 1 1
Slot "plotOrder":
[1] 1
Slot "labpt":
[1] 1.5 1.0
Slot "ID":
[1] "1"
Slot "area":
[1] 0
Slot "plotOrder":
[1] 1
Slot "bbox":
min max
x 1 2
y 1 1
Slot "proj4string":
Coordinate Reference System:
Deprecated Proj.4 representation: NA
Warning in wkt(x): CRS object has no comment
[Package rgeos version 0.5-9 Index]