Class for (irregularly spaced) points

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

.

`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

Class `"Spatial"`

, directly.

- [
`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

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

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

`SpatialPointsDataFrame-class`

```
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)
```

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