xyCoords: Get playwith plot data points

Description

Part of the playwith Application Programming Interface.

Usage

xyCoords(playState = playDevCur(), space = "plot")
xyData(playState = playDevCur(), space = "plot")
getDataArg(playState = playDevCur(), eval = TRUE)

Arguments

playState

a playState object representing the plot, window and device.

space

character, the plot space for which to get data. This is only relevant to multi-panel lattice plots, where data is split across panels. In this case, if space="page", the combined data from all panels is returned. See the space argument to playDo.

eval

whether to evaluate the argument; otherwise return the it as it appears in the call.

Value

the returned value is a list with elements x and y, which are numeric vectors in the case of xyCoords. Can also include an element subscripts, and generally will for lattice plots (similar to the result of calling trellis.panelArgs).

Details

None yet.

Examples

Run this code

if (interactive()) {

library(lattice)
x <- as.Date("1990-01-01") + 1:20 - 1
ab <- rep(c("a", "b"), each=10)
playwith(xyplot(1:20 ~ x | ab, subscripts = TRUE))
playState <- playDevCur()
xyCoords(playState, space="packet 2")
xyData(playState, space="packet 2")
try(xyData(playState, space="plot"))
getDataArg(playState)

}