SpatialMultiPoints-class function

Class "SpatialMultiPoints"

Class for (irregularly spaced) MultiPoints class

Objects from the Class

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

Slots

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

Extends

Class "Spatial", directly.

Methods

• [: signature(x = "SpatialMultiPoints"): subsets point sets
• coerce: signature(from = "SpatialPoints", to = "data.frame"): coerce to data.frame
• coordinates: signature(obj = "SpatialMultiPoints"): retrieves all the coordinates, as one single 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

Author(s)

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

See Also

SpatialMultiPointsDataFrame-class

SpatialPoints-class

Examples

cl1 = cbind(rnorm(3, 10), rnorm(3, 10))
cl2 = cbind(rnorm(5, 10), rnorm(5,  0))
cl3 = cbind(rnorm(7,  0), rnorm(7, 10))

mp = SpatialMultiPoints(list(cl1, cl2, cl3))
plot(mp, col = 2, cex = 1, pch = 1:3)
mp
mp[1:2]

print(mp, asWKT=TRUE, digits=3)