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# Private function for RHRV use only
# Modification of the graphics::filled.contour function that allows the
# user to specify with the additional show.legend parameter if a legend
# should be added or not
rhrv.filled.contour <-
function (x = seq(0, 1, length.out = nrow(z)),
y = seq(0, 1, length.out = ncol(z)),
z, xlim = range(x, finite = TRUE),
ylim = range(y, finite = TRUE), zlim = range(z, finite = TRUE),
levels = pretty(zlim, nlevels), nlevels = 20,
color.palette = topo.colors,
col = color.palette(length(levels) - 1), plot.title, plot.axes,
key.title, key.axes, asp = NA, xaxs = "i", yaxs = "i", las = 1,
axes = TRUE, frame.plot = axes, show.legend = TRUE,
episodesColorPalette = NULL, markEpisodes = TRUE,
...) {
if (missing(z)) {
if (!missing(x)) {
if (is.list(x)) {
z <- x$z
y <- x$y
x <- x$x
}
else {
z <- x
x <- seq.int(0, 1, length.out = nrow(z))
}
}
else stop("no 'z' matrix specified")
}
else if (is.list(x)) {
y <- x$y
x <- x$x
}
if (any(diff(x) <= 0) || any(diff(y) <= 0))
stop("increasing 'x' and 'y' values expected")
# functions for adding the legend
if (show.legend){
mar.orig <- (par(c("mar", "las", "mfrow")))$mar
w <- (3 + mar.orig[2L]) * par("csi") * 2.54
layout(matrix(c(2, 1), ncol = 2L), widths = c(1, lcm(w)))
par(las = las)
mar <- mar.orig
mar[4L] <- mar[2L]
mar[2L] <- 1
par(mar = mar)
plot.new()
plot.window(xlim = c(0, 1), ylim = range(levels), xaxs = "i",
yaxs = "i")
rect(0, levels[-length(levels)], 1, levels[-1L], col = col)
if (missing(key.axes)) {
if (axes)
axis(4)
}
else key.axes
box()
if (!missing(key.title))
key.title
mar <- mar.orig
mar[4L] <- 1
par(mar = mar)
}
plot.new()
plot.window(xlim, ylim, "", xaxs = xaxs, yaxs = yaxs, asp = asp)
.filled.contour(x, y, z, levels, col)
if (missing(plot.axes)) {
if (axes) {
title(main = "", xlab = "", ylab = "")
Axis(x, side = 1)
Axis(y, side = 2)
}
}
else plot.axes
if (frame.plot)
box()
if (missing(plot.title))
title(...)
else plot.title
invisible()
}
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