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SpatialPoints-class {sp}

Class "SpatialPoints"
Package: 
sp
Version: 
1.2-2

Description

Class for (irregularly spaced) points

Objects from the Class

Objects can be created by calls of the form SpatialPoints(x).

Slots

coords:
Object of class "matrix", containing the     coordinates (each row is a point)
bbox:
Object of class "matrix", with bounding box
proj4string:
Object of class "CRS", projection string

Extends

Class "Spatial", directly.

Methods

[
signature(x = "SpatialPoints"): subsets the points; only     rows (points) can be subsetted
coerce
signature(from = "SpatialPoints", to = "data.frame"):     retrieves the data part
coerce
signature(from = "SpatialPoints", to = "SpatialPixels"): equivalent to assigning gridded TRUE for a copy of the object
coerce
signature(from = "SpatialPointsDataFrame", to = "SpatialPixelsDataFrame"): equivalent to assigning gridded TRUE for a copy of the object
coerce
signature(from = "data.frame", to = "SpatialPoints"): sets     coordinates, which may be in a data frame
coerce
signature(from = "matrix", to = "SpatialPoints"): set     coordinates, which may be in a matrix
coordinates
signature(obj = "SpatialPoints"): retrieves     the coordinates, as matrix
plot
signature(x = "SpatialPoints", y = "missing"): plot points
summary
signature(object = "SpatialPoints"): summarize object
points
signature(x = "SpatialPoints"): add point symbols to plot
show
signature(object = "SpatialPoints"): prints coordinates
rbind
signature(object = "SpatialPoints"): rbind-like method

plot method arguments

The plot method for “SpatialPoints” objects takes the following arguments:

x
object of class SpatialPoints
pch
default 3; either an integer specifying a symbol or a single character to be used as the default in plotting points
axes
default FALSE; a logical value indicating whether both axes should be drawn
add
default FALSE; add to existing plot
xlim
default NULL; the x limits (x1, x2) of the plot
ylim
default NULL; the y limits of the plot
...
passed through
setParUsrBB
default FALSE; set the par “usr” bounding box, see note in Spatial-class
cex
default 1; numerical value giving the amount by which plotting text and symbols should be magnified relative to the default
col
default 1; default plotting color
lwd
default 1; line width
bg
default 1; colour to be used for the background of the device region

See Also

SpatialPointsDataFrame-class

Examples

x = c(1,2,3,4,5)
y = c(3,2,5,1,4)
S <- SpatialPoints(cbind(x,y))
S <- SpatialPoints(list(x,y))
S <- SpatialPoints(data.frame(x,y))
S
plot(S)

Author(s)

Edzer Pebesma, edzer.pebesma@uni-muenster.de

Documentation reproduced from package sp, version 1.2-2. License: GPL (>= 2)