1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
\name{Extreme coordinates}
\alias{xmin}
\alias{xmax}
\alias{ymin}
\alias{ymax}
\alias{xmin<-}
\alias{xmax<-}
\alias{ymin<-}
\alias{ymax<-}
\alias{xmin,BasicRaster-method}
\alias{xmax,BasicRaster-method}
\alias{ymin,BasicRaster-method}
\alias{ymax,BasicRaster-method}
\alias{xmin,Extent-method}
\alias{xmax,Extent-method}
\alias{ymin,Extent-method}
\alias{ymax,Extent-method}
\alias{xmin,Spatial-method}
\alias{xmax,Spatial-method}
\alias{ymin,Spatial-method}
\alias{ymax,Spatial-method}
\alias{xmin<-,Extent,numeric-method}
\alias{xmin<-,BasicRaster,numeric-method}
\alias{xmax<-,Extent,numeric-method}
\alias{xmax<-,BasicRaster,numeric-method}
\alias{ymin<-,Extent,numeric-method}
\alias{ymin<-,BasicRaster,numeric-method}
\alias{ymax<-,Extent,numeric-method}
\alias{ymax<-,BasicRaster,numeric-method}
\title{Coordinates of the Extent of a Raster object}
\description{
These functions return or set the extreme coordinates of a Raster* object; and return them for Spatial* objects.
}
\usage{
xmin(x)
xmax(x)
ymin(x)
ymax(x)
xmin(x, ...) <- value
xmax(x, ...) <- value
ymin(x, ...) <- value
ymax(x, ...) <- value
}
\arguments{
\item{x}{Raster* or Extent object}
\item{value}{numeric. x or y coordinate}
\item{...}{additional arguments. None implemented}
}
\value{
numeric
}
\seealso{ \code{\link[raster]{extent}}, \code{\link[raster]{dimensions}} }
\examples{
r <- raster(xmn=-0.5, xmx = 9.5, ncols=10)
xmin(r)
xmax(r)
ymin(r)
ymax(r)
xmin(r) <- -180
xmax(r) <- 180
}
\keyword{spatial}
|
