R: A linked-window system for browsing space-time data

kerview {splancs} | R Documentation

## A linked-window system for browsing space-time data

### Description

A linked-window system for browsing space-time data.

### Usage

    kerview(pts, times, k3, map=TRUE, addimg=TRUE, ncol=1)

### Arguments

`pts` | A matrix of event x,y coordinates.
`times` | A vector of event times.
`k3` | An object returned from `kernel3d`, the space-time kernel smoothing function
`map` | If false, don't plot the map display.
`addimg` | If true, overwrite successive images in the image display, else make a fresh image plot each time.
`ncol` | Number of columns and rows for multiple images and maps.

### Details

This function displays three linked views of the data. In the current graphics window a temporal slice from the kernel smoothing is displayed. Another graphics device is started to display a map of the data that contributed to that time-slice. A third graphics device shows a histogram of the times of the events. Clicking with the mouse in this window with button 1 sets the time for the other displays to the time on the x-axis of the histogram at the clicked point.

In this way the 3-dimensional kernel smoothed function can be browsed, and the corresponding map of the data compared.

### 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: http://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

`kernel3d`

[Package splancs version 2.01-40 Index]