122 lines
3.5 KiB
R
122 lines
3.5 KiB
R
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panel.stackedDens <-
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function(x, y,
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overlap = 0.3,
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horizontal = TRUE,
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alpha = plot.polygon$alpha,
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border = plot.polygon$border,
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lty = plot.polygon$lty,
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lwd = plot.polygon$lwd,
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col = plot.polygon$col,
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varwidth = FALSE,
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ref = TRUE,
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bw = NULL,
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adjust = NULL,
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kernel = NULL,
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window = NULL,
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width = NULL,
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n = 50,
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from = NULL,
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to = NULL,
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cut = NULL,
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na.rm = TRUE,
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...)
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{
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if (all(is.na(x) | is.na(y))) return()
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x <- as.numeric(x)
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y <- as.numeric(y)
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reference.line <- trellis.par.get("reference.line")
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plot.polygon <- trellis.par.get("plot.polygon")
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## density doesn't handle unrecognized arguments (not even to
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## ignore it). A tedious but effective way to handle that is to
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## have all arguments to density be formal arguments to this panel
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## function, as follows:
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darg <- list()
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darg$bw <- bw
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darg$adjust <- adjust
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darg$kernel <- kernel
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darg$window <- window
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darg$width <- width
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darg$n <- n
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darg$from <- from
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darg$to <- to
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darg$cut <- cut
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darg$na.rm <- na.rm
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my.density <- function(x) do.call("density", c(list(x = x), darg))
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numeric.list <- if (horizontal) split(x, factor(y)) else split(y, factor(x))
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levels.fos <- as.numeric(names(numeric.list))
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d.list <- lapply(numeric.list, my.density)
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## n.list <- sapply(numeric.list, length) UNNECESSARY
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dx.list <- lapply(d.list, "[[", "x")
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dy.list <- lapply(d.list, "[[", "y")
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max.d <- sapply(dy.list, max)
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if (varwidth) max.d[] <- max(max.d)
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##str(max.d)
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xscale <- current.panel.limits()$xlim
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yscale <- current.panel.limits()$ylim
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height <- (1 + overlap)
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if (horizontal)
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{
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for (i in rev(seq_along(levels.fos)))
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{
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n <- length(dx.list[[i]])
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panel.polygon(x = dx.list[[i]][c(1, 1:n, n)],
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y = levels.fos[i] - 0.5 + height * c(0, dy.list[[i]], 0) / max.d[i],
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col = col, border = border,
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lty = lty, lwd = lwd, alpha = alpha)
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if (ref)
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{
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panel.abline(h = levels.fos[i] - 0.5,
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col = reference.line$col,
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lty = reference.line$lty,
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lwd = reference.line$lwd,
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alpha = reference.line$alpha)
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}
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}
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}
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else
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{
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for (i in rev(seq_along(levels.fos)))
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{
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n <- length(dx.list[[i]])
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panel.polygon(x = levels.fos[i] - 0.5 + height * c(0, dy.list[[i]], 0) / max.d[i],
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y = dx.list[[i]][c(1, 1:n, n)],
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col = col, border = border,
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lty = lty, lwd = lwd, alpha = alpha)
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if (ref)
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{
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panel.abline(v = levels.fos[i] - 0.5,
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col = reference.line$col,
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lty = reference.line$lty,
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lwd = reference.line$lwd,
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alpha = reference.line$alpha)
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}
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}
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}
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invisible()
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}
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overlap <- 0.3
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bwplot(voice.part ~ height, singer,
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panel = panel.stackedDens,
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overlap = overlap,
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lattice.options = list(axis.padding = list(factor = c(0.6, 1 + overlap))))
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