xyCoords: Get playwith plot data points
In playwith: A GUI for interactive plots using GTK+

Description Usage Arguments Details Value Author(s) See Also Examples

Part of the playwith Application Programming Interface.

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

`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.

None yet.

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).

Felix Andrews felix@nfrac.org

playwith.API, plotCoords

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)

}