# methods.layered

##### Methods for Layered Objects

Methods for geometrical transformations of
layered objects (class `"layered"`

).

##### Usage

```
# S3 method for layered
shift(X, vec=c(0,0), ...)
``` # S3 method for layered
rotate(X, ..., centre=NULL)

# S3 method for layered
affine(X, ...)

# S3 method for layered
reflect(X)

# S3 method for layered
flipxy(X)

# S3 method for layered
rescale(X, s, unitname)

# S3 method for layered
scalardilate(X, ...)

##### Arguments

- X
Object of class

`"layered"`

.- …
Arguments passed to the relevant methods when applying the operation to each layer of

`X`

.- s
Rescaling factor passed to the relevant method for

`rescale`

. May be missing.- vec
Shift vector (numeric vector of length 2).

- centre
Centre of rotation. Either a vector of length 2, or a character string (partially matched to

`"centroid"`

,`"midpoint"`

or`"bottomleft"`

). The default is the coordinate origin`c(0,0)`

.- unitname
Optional. New name for the unit of length. A value acceptable to the function

`unitname<-`

##### Details

These are methods for the generic functions
`shift`

,
`rotate`

,
`reflect`

,
`affine`

,
`rescale`

,
`scalardilate`

and
`flipxy`

for the class of layered objects.

A layered object represents data that should be plotted in
successive layers, for example, a background and a foreground.
See `layered`

.

##### Value

Another object of class `"layered"`

.

##### See Also

##### Examples

```
# NOT RUN {
L <- layered(letterR, runifpoint(20, letterR))
plot(L)
plot(rotate(L, pi/4))
# }
```

*Documentation reproduced from package spatstat, version 1.55-1, License: GPL (>= 2)*