R: Toroidal shift on a point data set

tor.shift {splancs} | R Documentation

## Toroidal shift on a point data set

### Description

Perform a toroidal shift on a point data set

### Usage

    tor.shift(pts,xsh=0.0,ysh=0.0,rect)

### Arguments

`pts` | The point data set to shift
`xsh` | Amount to shift along the x-axis
`ysh` | Amount to shift along the y-axis
`rect` | A rectangle defining the region for the toroidal map. If not given, the bounding box of `pts` is used.

### Details

The planar region defined by `rect` is assumed connected at its top and bottom edges, and at its left and right sides. A shift of `xsh` and `ysh` is applied to the points and the resulting set of points returned.

### Value

A point data set like `pts`, but after application of a toroidal shift along the x and y axes.

### References

Rowlingson, B. and Diggle, P. 1993 Splancs: spatial point pattern analysis code in S-Plus. Computers and Geosciences, 19, 627-655; the original sources can be accessed at: https://www.maths.lancs.ac.uk/~rowlings/Splancs/. See also Bivand, R. and Gebhardt, A. 2000 Implementing functions for spatial statistical analysis using the R language. Journal of Geographical Systems, 2, 307-317.

### See Also

`Shift`

[Package splancs version 2.01-43 Index]