SpatialMultiPoints-class {sp} | R Documentation

## Class "SpatialMultiPoints"

### Description

Class for (irregularly spaced) MultiPoints

### 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)

[Package sp version 1.2-3 Index]