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Option to specify whether labels are displayed #3

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Option to specify whether labels are displayed #3

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34 changes: 20 additions & 14 deletions R/timeline.R
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
#' @param group.col the column name in \code{df} to use for grouping.
#' @param start.col the column name in \code{df} that specifies the start date.
#' @param end.col the column name in \code{df} that specifies the end date.
#' @param display.label whether the labels should be displayed.
#' @param text.size the text size for labels in \code{df}.
#' @param text.color the text color for labels in \code{df}.
#' @param text.position the positioning of the text (i.e. left, right, or center).
Expand Down Expand Up @@ -60,7 +61,8 @@ timeline <- function(df, events,
group.col = names(df)[2],
start.col = names(df)[3],
end.col = names(df)[4],
text.position = c('left','right','center'),
display.label = T,
text.position = c('left','right','center'),
text.size = 4,
text.color = 'black',
text.alpha = 1,
Expand Down Expand Up @@ -188,19 +190,23 @@ timeline <- function(df, events,
p <- p +
geom_rect(data=df, aes_string(xmin=start.col, xmax=end.col,
ymin='ymin', ymax='ymax', fill=label.col), alpha=.9,
color=border.color, linetype=border.linetype) +
geom_text(data=df, aes_string(y='labelpos', x='labelpos.x', label=label.col),
hjust=text.hjust,
size=text.size,
color=text.color,
alpha=text.alpha,
angle=text.angle,
family=text.family,
fontface=text.fontface,
vjust=text.vjust,
lineheight=text.lineheight) +
theme(legend.position='none',
axis.ticks.y=element_blank()) +
color=border.color, linetype=border.linetype)
if (display.label) {
p <- p +
geom_text(data=df, aes_string(y='labelpos', x='labelpos.x',
label=label.col),
hjust=text.hjust,
size=text.size,
color=text.color,
alpha=text.alpha,
angle=text.angle,
family=text.family,
fontface=text.fontface,
vjust=text.vjust,
lineheight=text.lineheight)
}
p <- p + theme(legend.position='none',
axis.ticks.y=element_blank()) +
xlab('') + ylab('') +
xlim(c(xmin, xmax)) +
scale_y_continuous(breaks=group.labels$y-0.5,
Expand Down