SpatialPoints-class {sp} | R Documentation

## Class "SpatialPoints" ~~~

### 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 can be subsetted
coerce
  `signature(from = "SpatialPoints", to = "data.frame")`: retrieves the data part
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")`: plot point symbols
points
  `signature(x = "SpatialPoints")`: add point symbols to plot
show
  `signature(object = "SpatialPoints")`: prints coordinates

### Note

### Author(s)

Edzer J. Pebesma, e.pebesma@geo.uu.nl

### References

~put references to the literature/web site here ~

### 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)

[Package sp version 0.7-12 Index]