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Add manual text colouring #128

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Add manual text colouring #128

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9 changes: 9 additions & 0 deletions R/likert.options.R
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,9 @@
#' @param plot.percents whether to label each category/bar.
#' @param text.size size of text attributes.
#' @param text.color color of text attributes.
#' @param text.color.manual.pos individual color specification of positive text attributes.
#' @param text.color.manual.neg individual color specification of negative text attributes.
#' @param text.color.manual.neg individual color specification of neutral text attributes.
#' @param centered if true, the bar plot will be centered around zero such that
#' the lower half of levels will be negative.
#' @param include.center if TRUE, include the center level in the plot otherwise
Expand Down Expand Up @@ -48,6 +51,9 @@ likert.options <- function(
plot.percents = FALSE,
text.size = 3,
text.color = 'black',
text.color.manual.pos = NULL,
text.color.manual.neg = NULL,
text.color.manual.neutral = NULL,
centered = TRUE,
include.center = TRUE,
ordered = TRUE,
Expand Down Expand Up @@ -75,6 +81,9 @@ likert.options <- function(
plot.percents = plot.percents,
text.size = text.size,
text.color = text.color,
text.color.manual.pos = text.color.manual.pos,
text.color.manual.neg = text.color.manual.neg,
text.color.manual.neutral = text.color.manual.neutral,
centered = centered,
include.center = include.center,
ordered = ordered,
Expand Down
42 changes: 29 additions & 13 deletions R/plot.likert.bar.r
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Original file line number Diff line number Diff line change
@@ -1,10 +1,13 @@
utils::globalVariables(c('value','Group','variable','low','Item','high',
'neutral','x','y','pos','ddply','.','colors','low.color',
'neutral.color.ramp','high.color','neutral.color','wrap',
'wrap.grouping','centered','include.center','legend',
'plot.percent.low','text.size','text.color','plot.percent.high',
'plot.percent.neutral','plot.percents','panel.strip.color',
'panel.arrange','legend.position'))
'neutral','x','y','pos','ddply','.','colors',
'low.color', 'neutral.color.ramp','high.color',
'neutral.color','wrap', 'wrap.grouping','centered',
'include.center','legend', 'plot.percent.low',
'text.size','text.color', 'text.color.manual.pos',
'text.color.manual.neutral', 'text.color.manual.neg',
'plot.percent.high', 'plot.percent.neutral',
'plot.percents','panel.strip.color', 'panel.arrange',
'legend.position'))

#' Bar Plot for Likert Items.
#'
Expand Down Expand Up @@ -67,6 +70,14 @@ likert.bar.plot <- function(l,
}
}

if (!any(nzchar(text.color.manual.pos))) {
text.color.manual.pos <- text.color
}

if(!any(nzchar(text.color.manual.neg))) {
text.color.manual.neg <- text.color
}

lsum <- summary(l, center=center)

p <- NULL
Expand Down Expand Up @@ -167,6 +178,7 @@ likert.bar.plot <- function(l,
#warning('plot.percents is not currently supported for grouped analysis.')
lpercentpos <- ddply(results[results$value > 0,], .(Group, Item), transform,
pos = cumsum(value) - 0.5 * value)
lpercentpos$text.color.manual.pos <- text.color.manual.pos
p <- p + geom_text(data = lpercentpos,
aes(x = Group, y = pos,
label = paste0(prettyNum(value, digits=digits, drop0trailing=drop0trailing, zero.print=zero.print), '%'),
Expand All @@ -180,6 +192,7 @@ likert.bar.plot <- function(l,
.(Group, Item),
transform,
pos = cumsum(value) - 0.5 * value)
lpercentneg$text.color.manual.neg <- text.color.manual.neg
lpercentneg$pos <- lpercentneg$pos * -1
p <- p + geom_text(data = lpercentneg,
aes(x = Group, y = pos,
Expand Down Expand Up @@ -308,8 +321,9 @@ likert.bar.plot <- function(l,
pos = cumsum(value) - 0.5*value)
p <- p + geom_text(data=lpercentpos[lpercentpos$variable != center.label,],
aes(x=Item, y=pos,
color=text.color.manual.pos,
label=paste0(prettyNum(value, digits=digits, drop0trailing=drop0trailing, zero.print=zero.print), '%')),
size=text.size, color=text.color)
size=text.size)
lpercentneg <- results[results$value < 0,]
if(nrow(lpercentneg) > 0) {
lpercentneg <- lpercentneg[nrow(lpercentneg):1,]
Expand All @@ -318,22 +332,23 @@ likert.bar.plot <- function(l,
pos = cumsum(value) - 0.5*value)
lpercentneg$pos <- lpercentneg$pos * -1
p <- p + geom_text(data=lpercentneg[lpercentneg$variable != center.label,],
aes(x=Item, y=pos,
aes(x=Item, y=pos, color=text.color.manual.neg,
label=paste0(prettyNum(abs(value), digits=digits, drop0trailing=drop0trailing, zero.print=zero.print), '%')),
size=text.size, color=text.color)
size=text.size)
}
lpercentneutral <- results[results$variable == center.label,]
lpercentneutral$text.color.manual.neutral <- text.color.manual.neutral
if(nrow(lpercentneutral) > 0 & centered) {
p <- p + geom_text(data=lpercentneutral,
aes(x=Item, y=0,
aes(x=Item, y=0, color=text.color.manual.neutral,
label=paste0(prettyNum(abs(value * 2), digits=digits, drop0trailing=drop0trailing, zero.print=zero.print), '%')),
size=text.size, color=text.color)
size=text.size)
}
if(nrow(lpercentneutral) > 0 & !centered) {
p <- p + geom_text(data=lpercentpos[lpercentpos$variable == center.label,],
aes(x=Item, y=pos,
aes(x=Item, y=pos, color=text.color.manual.neutral,
label=paste0(prettyNum(value, digits=digits, drop0trailing=drop0trailing, zero.print=zero.print), '%')),
size=text.size, color=text.color)
size=text.size)
}
}
p <- p +
Expand All @@ -354,6 +369,7 @@ likert.bar.plot <- function(l,
p <- p + scale_y_continuous(labels=abs_formatter,
limits=c(ymin - ybuffer, ymax + ybuffer))
p <- p + theme(legend.position=legend.position)
p <- p + scale_color_identity()

attr(p, 'item.order') <- levels(results$Item)
class(p) <- c('likert.bar.plot', class(p))
Expand Down