| queueSpatstatLocator {spatstat.utils} | R Documentation |
Add Coordinates to a Queue for Use by Locator Function
Description
Add the coordinates of a spatial location to a queue.
The queue can be accessed by the spatstatLocator function
in a non-interactive session.
Usage
queueSpatstatLocator(x, y)
Arguments
x, y |
Numeric values, or vectors of the same length,
containing spatial coordinates. Any data acceptable to
|
Details
The spatstatLocator function is a replacement
for the locator function
that can be used to test software which depends on user input.
When queueSpatstatLocator(x,y) is called, the coordinate
data x,y are saved in a queue. The first-listed coordinate
pair x[1], y[1] is at the front of the queue. Subsequently, when
spatstatLocator is called, the coordinates are
taken from the front of the queue and returned as if they had been
clicked by the user.
This only works in a non-interactive
session, that is, when interactive() returns FALSE.
Value
Integer (invisible). The length of the queue, after inclusion of the new points.
Author(s)
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner rolfturner@posteo.net and Ege Rubak rubak@math.aau.dk.
See Also
Examples
queueSpatstatLocator(0.5, 0.7)
queueSpatstatLocator(c(0.3, 0.4), c(0.2, 0.9))
if(!interactive()) {
spatstatLocator(2)
spatstatLocator(1)
}