Given any kind of spatial or space-time point pattern, this function extracts the (space and/or time and/or local) coordinates of the points and returns them as a data frame.
coords(x, ...)
# S3 method for ppp
coords(x, ...)
# S3 method for ppx
coords(x, ..., spatial = TRUE, temporal = TRUE, local=TRUE)
coords(x, ...) <- value
# S3 method for ppp
coords(x, ...) <- value
# S3 method for ppx
coords(x, ..., spatial = TRUE, temporal = TRUE, local=TRUE) <- value
# S3 method for quad
coords(x, ...)A point pattern: either a two-dimensional point pattern
(object of class "ppp"), a three-dimensional point pattern
(object of class "pp3"), or a
general multidimensional space-time point pattern
(object of class "ppx")
or a quadrature scheme (object of class "quad").
Further arguments passed to methods.
Logical values indicating whether to extract spatial, temporal
and local coordinates, respectively. The default is to return all
such coordinates. (Only relevant to ppx objects).
New values of the coordinates. A numeric vector with one entry for each
point in x, or a numeric matrix or data frame with one row
for each point in x.
coords returns a data.frame with one row for each point,
containing the coordinates.
coords<- returns the altered point pattern.
The function coords extracts the coordinates from
a point pattern. The function coords<- replaces the coordinates
of the point pattern with new values.
Both functions coords and coords<- are generic, with methods for
the classes "ppp") and "ppx".
An object of class "pp3" also inherits from "ppx" and
is handled by the method for "ppx".
# NOT RUN {
df <- data.frame(x=runif(4),y=runif(4),t=runif(4))
X <- ppx(data=df, coord.type=c("s","s","t"))
coords(X)
coords(X, temporal=FALSE)
coords(X) <- matrix(runif(12), ncol=3)
# }
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