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13 changes: 10 additions & 3 deletions R/parallel.R
Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@
#' displays) of the widest line as ratio of the overall display height (width
#' for horizontal displays).
#' @param label binary variable (vector), whether labels should be shown.
#' @param label.type which label type to display, either level names (label.type = "names") or level count (label.type = "count").
#' @param label.size numeric value to determine the size in which labels are shown, defaults to 4
#' @param label.colour character of colour in which the label should be shown. Ignored, if `label` is FALSE.
#' @param text.angle numeric value to determine the angle under which labels are shown.
Expand All @@ -57,7 +58,7 @@
#' @example inst/examples/ggparallel-ex.R
ggparallel <- function(vars=list(), data, weight=NULL, method="angle",
alpha=0.5, width = 0.25, order = 1, ratio=NULL,
asp = NULL, label = TRUE, label.colour="grey90", label.size=4, text.angle=90,
asp = NULL, label = TRUE, label.type = "names", label.colour="grey90", label.size=4, text.angle=90,
text.offset=NULL, same.level=FALSE, ...) {
### error checking
vars <- unlist(vars)
Expand Down Expand Up @@ -278,8 +279,14 @@ ggparallel <- function(vars=list(), data, weight=NULL, method="angle",
if (is.null(text.offset)) text.offset <- 0
label.stats$text.offset <- rep(text.offset, length=nrow(label.stats))

varnames <- paste(unlist(vars), sep="|", collapse="|")
label.stats$labels <- gsub(sprintf("(%s):(.*)",varnames),"\\2", as.character(label.stats$Nodeset))
if (label.type == "names") {
varnames <- paste(unlist(vars), sep="|", collapse="|")
label.stats$labels <- gsub(sprintf("(%s):(.*)",varnames),"\\2", as.character(label.stats$Nodeset))
}
if (label.type == "count") {
label.stats$labels <- label.stats$weight
}

llabels <- list(#geom_text(aes(x=as.numeric(variable)+text.offset, y=ypos, label=labels),
# colour = "grey20", data=label.stats, angle=text.angle, size=label.size),
geom_text(aes(x=as.numeric(variable)+0.01+text.offset, y=ypos-0.01, label=labels),
Expand Down