R/thlLinePlot.R
In THLfi/thlGraphs: THL style graphs
Defines functions
thlLinePlot
Documented in
thlLinePlot
#' Make thlLinePlot
#'
#' @param data a data frame
#' @param xvar variable to be plotted on the x-axis.
#' @param yvar variable to be plotted on the y-axis.
#' @param groupvar grouping variable. Defaults to NULL (no grouping).
#' @param ylabel y-axis label. Defaults to yvar.
#' @param xlabel x-axis label. Defaults to NULL (omitted).
#' @param colors colors to be used. Defaults to THL qualitative color palette for line plots (see \code{\link{thlColors}}).
#' @param title a character string specifying the title of the plot.
#' @param subtitle a charater string specifing the subtitle of the plot.
#' @param caption a character string specifying the caption of the plot .
#' @param legend.position e.g. "topright", (see \code{\link{theme}}). Omit with "none".
#' @param base.size the size of basic text in the plot title, axis labels in PostScript points, defaults to 16.
#' @param linewidth width of the line in PostScript points, defaults to 3.
#' @param show.grid.x TRUE/FALSE, defaults to FALSE.
#' @param show.grid.y TRUE/FALSE, defaults to TRUE. Set the grid sequence with parameter yaxis.breaks
#' @param lang language options for the y-axis labels. Defines the style of big marks and decimal marks (see \code{\link{thlYaxisControl}})
#' @param ylimits limits for the y-axis
#' @param marked.treshold the maximum amount of data points plotted with both line and a dot (default 10).
#' If the number of data points is greater than this treshold, dots are plotted only at the beginning and the end of the line. setting this to NULL will omit all dots.
#' @param plot.missing TRUE/FALSE, should the missing values be linearly interpolated and plotted with dotted line (see \code{\link{thlNaLines}} for more details)?
#' @param xaxis.breaks a character vector defining the x-axis breaks and tickmarks. Also affects the x-axis grid when it is set to TRUE. To allow automatic calculation, use waiver()
#' @param yaxis.breaks a character vector defining the y-axis breaks and tickmarks. Also affects the y-axis grid when it is set to TRUE. To allow automatic calculation, use waiver()
#' @param panels TRUE/FALSE, should multiple graphs be plotted in separate panels? If TRUE, the panels are based on the grouping variable defined by the groupvar -argument.
#' @param nrow.panels In how many rows should the panels be plotted?
#' @param labels.end TRUE/FALSE. Whether the line labels should be displayed at the right end of each line
#' @param circle TRUE/FALSE. Whether the shape is always circle or is allowed to vary across groupvar (hollow shapes 21:25 assumed).
#' @import ggplot2
#' @author Salla Toikkanen, Tarja Palosaari, Petteri Mäntymaa
#' @import ggplot2
#' @return a ggplot -object
#'
#' @examples
#'
#'## Generate data for demonstration
#' year <- 1999:2017
#' set.seed(1234)
#' value1 <- jitter(c(250:(250+length(year)-1)), factor = 100)*1000
#' value2 <- jitter(c(200:(200-length(year)+1)), factor = 300)*1000
#' value3 <- jitter(c(100:(100-length(year)+1)), factor = 400)*1000
#' dat <- data.frame(year = rep(year,3), value = c(value1, value2, value3),
#' group = factor(rep(c("Rabbits", "Magicians", "Playing cards"), each = length(year))))
#' dat$value <- with(dat, ifelse(year %in% c(2012,2013) & group == "Rabbits", NA, value))
#' dat$value <- with(dat, ifelse(year == 2007 & group == "Magicians", NA, value))
#'
#' ## Default line plot:
#' thlLinePlot(data = subset(dat, year<2007), xvar = year, yvar = value,
#' groupvar = group, ylimits = c(0,350000))
#' ## Add some decoration and transparency to the colors
#' mycaption <- c(expression(paste(bold("Source:"), " My hat from the rack"))) ## A caption which is partially in bold
#' thlLinePlot(data = subset(dat, year<2007), xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' base.size = 18,
#' linewidth = 4,
#' colors = thlColors(n = 3, type ="quali",
#' name = "line", alpha = 0.8),
#' ylimits = c(0,350000))
#' ## By default the missing values are not plotted
#' thlLinePlot(data = dat, xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N", linewidth = 4,
#' ylimits = c(0,350000), xaxis.breaks = 1999:2017)
#' ## Allow linear interpolation of missings and add labels at the end of the lines:
#' thlLinePlot(data = dat, xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks = 1999:2017, plot.missing = TRUE,
#' labels.end = TRUE)
#'
#' ## Instead of labels at the line ends you can also use legend...
#' thlLinePlot(data = dat, xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption, ## Add the caption
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks = 1999:2017, plot.missing = TRUE,
#' legend.position = "right")
#' ## ... or plot all groups on different panels ...
#' thlLinePlot(data = subset(dat, year>2010), xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks = 1999:2017, plot.missing = TRUE,
#' panels = TRUE, nrow.panels = 1)
#' ## ... or annotate the information manually with thlAnnotate():
#' res <- thlLinePlot(data = subset(dat, group %in% c("Rabbits", "Playing cards")), xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks = 1999:2017, plot.missing = TRUE)
#'
#' res + thlAnnotate(type = "label", x = 2001.5, y = 290000,
#' label = "Bunnies", style = "white") +
#' thlAnnotate(type = "label", x = 2001.5, y = 180000,
#' label = "Cards", style = "white",
#' fill = TRUE) +
#' thlAnnotate(type = "box", x = 2012.5, y = 200000, yend = 260000,
#' label = "2011-14 are missing due \nto a hole in my hat", style = "white",
#' fill = TRUE, text.size = 12)
#' ## Make a slope graph
#' thlLinePlot(data = subset(dat, year %in% c(1999,2017)),
#' xvar = year, yvar = value, groupvar = group,
#' title = "Change from 1999 to 2017",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks=c(1999,2017),
#' labels.end = TRUE,
#' show.grid.x = TRUE, lang ="ENG")
#' data("yli180")
#' yli180$kk2<-factor(yli180$kk, levels = yli180$kk)
#' thlLinePlot(data = yli180, xvar = kk2, yvar = pros, ylimits = c(0,2), ylab = "%",
#' title = "Erikoissairaanhoidosssa yli 180 vuorokautta hoitoa \nodottaneet kolmannesvuosittain 2015 - 2018",
#' caption="", xaxis.breaks = c("12/2015","12/2016","12/2017",
#' "12/2018"))
#' thlPlotLogo(label = NULL, x = .67, y = .04, size = 1, fontsize = 10)
#' @export
thlLinePlot<-function(data,
xvar,
yvar,
groupvar = NULL,
ylabel = yvar,
xlabel = NULL,
colors = thlColors(n = 12, type = "quali",
name ="line"),
title = NULL,
subtitle = NULL,
caption = NULL,
legend.position= "none",
base.size = 16,
linewidth = 3,
show.grid.x = FALSE,
show.grid.y = TRUE,
lang = "fi",
ylimits = NULL,
marked.treshold = 10,
plot.missing = FALSE,
xaxis.breaks = waiver(),
yaxis.breaks = waiver(),
panels = FALSE,
nrow.panels = 1,
labels.end = FALSE,
circle = TRUE) {
lwd <- thlPtsConvert(linewidth)
## make a simple line plot
gg <- ggplot(data, aes_(x = substitute(xvar), y = substitute(yvar),
group = ifelse(!is.null(substitute(groupvar)), substitute(groupvar),NA),
colour = ifelse(!is.null(substitute(groupvar)), substitute(groupvar), ""))) +
geom_line(size = lwd)
## in case plot.missing = TRUE, plot the missings as dotted lines
if(isTRUE(plot.missing)){
df <- thlNaLines(data = data, xvar = deparse(substitute(xvar)),
yvar = deparse(substitute(yvar)),
groupvar = unlist(ifelse(deparse(substitute(groupvar)) != "NULL",
deparse(substitute(groupvar)),
list(NULL))))
if(!is.null(df)){
gg <- gg + geom_line(data = df, aes_(x = substitute(xvar), y= substitute(yvar),
group = ifelse(!is.null(substitute(groupvar)), substitute(groupvar),NA),
colour = ifelse(!is.null(substitute(groupvar)), substitute(groupvar), "")),
linetype = 2, size = lwd)
}
}
if(!is.null(marked.treshold)){
## in case of more than marked.treshold data points, geom_point() only on the first and last data point
if(length(unique(data[,deparse(substitute(xvar))])) > marked.treshold){
if(is.factor(data[,deparse(substitute(xvar))]) ||
is.character(data[,deparse(substitute(xvar))]) ||
is.logical(data[,deparse(substitute(xvar))])) {
levs<-levels(factor(data[,deparse(substitute(xvar))]))
min <- levs[1]
max <- levs[length(levs)]
}
else{
min <- min(data[,deparse(substitute(xvar))])
max <- max(data[,deparse(substitute(xvar))])
}
subdata<-data[c(data[,deparse(substitute(xvar))] %in% c(min,max)),]
} else {
subdata <- data
}
if(circle | is.null(substitute(groupvar))) {
gg <- gg + geom_point(data = subdata,
aes_(x = substitute(xvar), y = substitute(yvar),
group = ifelse(!is.null(substitute(groupvar)), substitute(groupvar),NA),
colour = ifelse(!is.null(substitute(groupvar)), substitute(groupvar), "")),
shape = 21, # Shape is constant
stroke = 1.35 * lwd,
fill = "white",
size = 10/3 * lwd )
} else {
gg <- gg + geom_point(data = subdata,
aes_(x = substitute(xvar), y = substitute(yvar),
group = ifelse(!is.null(substitute(groupvar)), substitute(groupvar),NA),
colour = ifelse(!is.null(substitute(groupvar)), substitute(groupvar), ""),
shape = substitute(groupvar)), # Shape is aesthetics
stroke = 1.35 * lwd,
fill = "white",
size = 10/3 * lwd )
}
gg <- gg + scale_shape_manual(values=21:25) # These are hollow shapes
}
## labels at the end of the lines?
if(isTRUE(labels.end)){
if(is.factor(data[,deparse(substitute(xvar))]) ||
is.character(data[,deparse(substitute(xvar))]) ||
is.logical(data[,deparse(substitute(xvar))])) {
levs<-levels(factor(data[,deparse(substitute(xvar))]))
maxd <- data[data[,deparse(substitute(xvar))] ==
levs[length(levs)],]
}
else{ maxd <- data[data[,deparse(substitute(xvar))] ==
max(data[,deparse(substitute(xvar))]),]
}
brks <- maxd[,deparse(substitute(yvar))]
labsut <- maxd[,deparse(substitute(groupvar))]
}
else(brks <- labsut <- waiver())
## assign the rest of the elements to the plot
gg <- gg +
ylab(ifelse(deparse(substitute(ylabel))=="yvar", deparse(substitute(yvar)), ylabel)) +
labs(title = title,
subtitle = subtitle,
caption = caption) +
thlTheme(show.grid.y = show.grid.y,
show.grid.x = show.grid.x, base.size = base.size,
legend.position = legend.position,
x.axis.title = ifelse(!is.null(xlabel), TRUE, FALSE)) +
xlab(ifelse(!is.null(xlabel), xlabel, "")) +
scale_color_manual(values=colors) +
thlYaxisControl(lang = lang, limits = ylimits, breaks = yaxis.breaks,
sec.axis = labels.end,
sec.axis.breaks = brks, sec.axis.labels = labsut)
## check whether xvar is discrete
if(is.factor(data[,deparse(substitute(xvar))]) ||
is.character(data[,deparse(substitute(xvar))]) ||
is.logical(data[,deparse(substitute(xvar))])) {
gg <- gg + scale_x_discrete(breaks = xaxis.breaks, expand = expand_scale(mult=c(0.05)))
}
else(gg <- gg + scale_x_continuous(breaks = xaxis.breaks))
if (isTRUE(panels)){
fmla <- as.formula(paste0("~", substitute(groupvar)))
gg <- gg + facet_wrap(fmla, scales = "free", nrow = nrow.panels)
}
gg
}
THLfi/thlGraphs documentation built on Oct. 31, 2019, 12:09 a.m.
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Defines functions thlLinePlot
Documented in thlLinePlot
#' Make thlLinePlot
#'
#' @param data a data frame
#' @param xvar variable to be plotted on the x-axis.
#' @param yvar variable to be plotted on the y-axis.
#' @param groupvar grouping variable. Defaults to NULL (no grouping).
#' @param ylabel y-axis label. Defaults to yvar.
#' @param xlabel x-axis label. Defaults to NULL (omitted).
#' @param colors colors to be used. Defaults to THL qualitative color palette for line plots (see \code{\link{thlColors}}).
#' @param title a character string specifying the title of the plot.
#' @param subtitle a charater string specifing the subtitle of the plot.
#' @param caption a character string specifying the caption of the plot .
#' @param legend.position e.g. "topright", (see \code{\link{theme}}). Omit with "none".
#' @param base.size the size of basic text in the plot title, axis labels in PostScript points, defaults to 16.
#' @param linewidth width of the line in PostScript points, defaults to 3.
#' @param show.grid.x TRUE/FALSE, defaults to FALSE.
#' @param show.grid.y TRUE/FALSE, defaults to TRUE. Set the grid sequence with parameter yaxis.breaks
#' @param lang language options for the y-axis labels. Defines the style of big marks and decimal marks (see \code{\link{thlYaxisControl}})
#' @param ylimits limits for the y-axis
#' @param marked.treshold the maximum amount of data points plotted with both line and a dot (default 10).
#' If the number of data points is greater than this treshold, dots are plotted only at the beginning and the end of the line. setting this to NULL will omit all dots.
#' @param plot.missing TRUE/FALSE, should the missing values be linearly interpolated and plotted with dotted line (see \code{\link{thlNaLines}} for more details)?
#' @param xaxis.breaks a character vector defining the x-axis breaks and tickmarks. Also affects the x-axis grid when it is set to TRUE. To allow automatic calculation, use waiver()
#' @param yaxis.breaks a character vector defining the y-axis breaks and tickmarks. Also affects the y-axis grid when it is set to TRUE. To allow automatic calculation, use waiver()
#' @param panels TRUE/FALSE, should multiple graphs be plotted in separate panels? If TRUE, the panels are based on the grouping variable defined by the groupvar -argument.
#' @param nrow.panels In how many rows should the panels be plotted?
#' @param labels.end TRUE/FALSE. Whether the line labels should be displayed at the right end of each line
#' @param circle TRUE/FALSE. Whether the shape is always circle or is allowed to vary across groupvar (hollow shapes 21:25 assumed).
#' @import ggplot2
#' @author Salla Toikkanen, Tarja Palosaari, Petteri Mäntymaa
#' @import ggplot2
#' @return a ggplot -object
#'
#' @examples
#'
#'## Generate data for demonstration
#' year <- 1999:2017
#' set.seed(1234)
#' value1 <- jitter(c(250:(250+length(year)-1)), factor = 100)*1000
#' value2 <- jitter(c(200:(200-length(year)+1)), factor = 300)*1000
#' value3 <- jitter(c(100:(100-length(year)+1)), factor = 400)*1000
#' dat <- data.frame(year = rep(year,3), value = c(value1, value2, value3),
#' group = factor(rep(c("Rabbits", "Magicians", "Playing cards"), each = length(year))))
#' dat$value <- with(dat, ifelse(year %in% c(2012,2013) & group == "Rabbits", NA, value))
#' dat$value <- with(dat, ifelse(year == 2007 & group == "Magicians", NA, value))
#'
#' ## Default line plot:
#' thlLinePlot(data = subset(dat, year<2007), xvar = year, yvar = value,
#' groupvar = group, ylimits = c(0,350000))
#' ## Add some decoration and transparency to the colors
#' mycaption <- c(expression(paste(bold("Source:"), " My hat from the rack"))) ## A caption which is partially in bold
#' thlLinePlot(data = subset(dat, year<2007), xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' base.size = 18,
#' linewidth = 4,
#' colors = thlColors(n = 3, type ="quali",
#' name = "line", alpha = 0.8),
#' ylimits = c(0,350000))
#' ## By default the missing values are not plotted
#' thlLinePlot(data = dat, xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N", linewidth = 4,
#' ylimits = c(0,350000), xaxis.breaks = 1999:2017)
#' ## Allow linear interpolation of missings and add labels at the end of the lines:
#' thlLinePlot(data = dat, xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks = 1999:2017, plot.missing = TRUE,
#' labels.end = TRUE)
#'
#' ## Instead of labels at the line ends you can also use legend...
#' thlLinePlot(data = dat, xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption, ## Add the caption
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks = 1999:2017, plot.missing = TRUE,
#' legend.position = "right")
#' ## ... or plot all groups on different panels ...
#' thlLinePlot(data = subset(dat, year>2010), xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks = 1999:2017, plot.missing = TRUE,
#' panels = TRUE, nrow.panels = 1)
#' ## ... or annotate the information manually with thlAnnotate():
#' res <- thlLinePlot(data = subset(dat, group %in% c("Rabbits", "Playing cards")), xvar = year, yvar = value, groupvar = group,
#' title = "Random numbers from the hat!",
#' caption = mycaption,
#' subtitle = "Maybe not totally random?",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks = 1999:2017, plot.missing = TRUE)
#'
#' res + thlAnnotate(type = "label", x = 2001.5, y = 290000,
#' label = "Bunnies", style = "white") +
#' thlAnnotate(type = "label", x = 2001.5, y = 180000,
#' label = "Cards", style = "white",
#' fill = TRUE) +
#' thlAnnotate(type = "box", x = 2012.5, y = 200000, yend = 260000,
#' label = "2011-14 are missing due \nto a hole in my hat", style = "white",
#' fill = TRUE, text.size = 12)
#' ## Make a slope graph
#' thlLinePlot(data = subset(dat, year %in% c(1999,2017)),
#' xvar = year, yvar = value, groupvar = group,
#' title = "Change from 1999 to 2017",
#' ylab = "#N",
#' ylimits = c(0,350000),
#' xaxis.breaks=c(1999,2017),
#' labels.end = TRUE,
#' show.grid.x = TRUE, lang ="ENG")
#' data("yli180")
#' yli180$kk2<-factor(yli180$kk, levels = yli180$kk)
#' thlLinePlot(data = yli180, xvar = kk2, yvar = pros, ylimits = c(0,2), ylab = "%",
#' title = "Erikoissairaanhoidosssa yli 180 vuorokautta hoitoa \nodottaneet kolmannesvuosittain 2015 - 2018",
#' caption="", xaxis.breaks = c("12/2015","12/2016","12/2017",
#' "12/2018"))
#' thlPlotLogo(label = NULL, x = .67, y = .04, size = 1, fontsize = 10)
#' @export
thlLinePlot<-function(data,
xvar,
yvar,
groupvar = NULL,
ylabel = yvar,
xlabel = NULL,
colors = thlColors(n = 12, type = "quali",
name ="line"),
title = NULL,
subtitle = NULL,
caption = NULL,
legend.position= "none",
base.size = 16,
linewidth = 3,
show.grid.x = FALSE,
show.grid.y = TRUE,
lang = "fi",
ylimits = NULL,
marked.treshold = 10,
plot.missing = FALSE,
xaxis.breaks = waiver(),
yaxis.breaks = waiver(),
panels = FALSE,
nrow.panels = 1,
labels.end = FALSE,
circle = TRUE) {
lwd <- thlPtsConvert(linewidth)
## make a simple line plot
gg <- ggplot(data, aes_(x = substitute(xvar), y = substitute(yvar),
group = ifelse(!is.null(substitute(groupvar)), substitute(groupvar),NA),
colour = ifelse(!is.null(substitute(groupvar)), substitute(groupvar), ""))) +
geom_line(size = lwd)
## in case plot.missing = TRUE, plot the missings as dotted lines
if(isTRUE(plot.missing)){
df <- thlNaLines(data = data, xvar = deparse(substitute(xvar)),
yvar = deparse(substitute(yvar)),
groupvar = unlist(ifelse(deparse(substitute(groupvar)) != "NULL",
deparse(substitute(groupvar)),
list(NULL))))
if(!is.null(df)){
gg <- gg + geom_line(data = df, aes_(x = substitute(xvar), y= substitute(yvar),
group = ifelse(!is.null(substitute(groupvar)), substitute(groupvar),NA),
colour = ifelse(!is.null(substitute(groupvar)), substitute(groupvar), "")),
linetype = 2, size = lwd)
}
}
if(!is.null(marked.treshold)){
## in case of more than marked.treshold data points, geom_point() only on the first and last data point
if(length(unique(data[,deparse(substitute(xvar))])) > marked.treshold){
if(is.factor(data[,deparse(substitute(xvar))]) ||
is.character(data[,deparse(substitute(xvar))]) ||
is.logical(data[,deparse(substitute(xvar))])) {
levs<-levels(factor(data[,deparse(substitute(xvar))]))
min <- levs[1]
max <- levs[length(levs)]
}
else{
min <- min(data[,deparse(substitute(xvar))])
max <- max(data[,deparse(substitute(xvar))])
}
subdata<-data[c(data[,deparse(substitute(xvar))] %in% c(min,max)),]
} else {
subdata <- data
}
if(circle | is.null(substitute(groupvar))) {
gg <- gg + geom_point(data = subdata,
aes_(x = substitute(xvar), y = substitute(yvar),
group = ifelse(!is.null(substitute(groupvar)), substitute(groupvar),NA),
colour = ifelse(!is.null(substitute(groupvar)), substitute(groupvar), "")),
shape = 21, # Shape is constant
stroke = 1.35 * lwd,
fill = "white",
size = 10/3 * lwd )
} else {
gg <- gg + geom_point(data = subdata,
aes_(x = substitute(xvar), y = substitute(yvar),
group = ifelse(!is.null(substitute(groupvar)), substitute(groupvar),NA),
colour = ifelse(!is.null(substitute(groupvar)), substitute(groupvar), ""),
shape = substitute(groupvar)), # Shape is aesthetics
stroke = 1.35 * lwd,
fill = "white",
size = 10/3 * lwd )
}
gg <- gg + scale_shape_manual(values=21:25) # These are hollow shapes
}
## labels at the end of the lines?
if(isTRUE(labels.end)){
if(is.factor(data[,deparse(substitute(xvar))]) ||
is.character(data[,deparse(substitute(xvar))]) ||
is.logical(data[,deparse(substitute(xvar))])) {
levs<-levels(factor(data[,deparse(substitute(xvar))]))
maxd <- data[data[,deparse(substitute(xvar))] ==
levs[length(levs)],]
}
else{ maxd <- data[data[,deparse(substitute(xvar))] ==
max(data[,deparse(substitute(xvar))]),]
}
brks <- maxd[,deparse(substitute(yvar))]
labsut <- maxd[,deparse(substitute(groupvar))]
}
else(brks <- labsut <- waiver())
## assign the rest of the elements to the plot
gg <- gg +
ylab(ifelse(deparse(substitute(ylabel))=="yvar", deparse(substitute(yvar)), ylabel)) +
labs(title = title,
subtitle = subtitle,
caption = caption) +
thlTheme(show.grid.y = show.grid.y,
show.grid.x = show.grid.x, base.size = base.size,
legend.position = legend.position,
x.axis.title = ifelse(!is.null(xlabel), TRUE, FALSE)) +
xlab(ifelse(!is.null(xlabel), xlabel, "")) +
scale_color_manual(values=colors) +
thlYaxisControl(lang = lang, limits = ylimits, breaks = yaxis.breaks,
sec.axis = labels.end,
sec.axis.breaks = brks, sec.axis.labels = labsut)
## check whether xvar is discrete
if(is.factor(data[,deparse(substitute(xvar))]) ||
is.character(data[,deparse(substitute(xvar))]) ||
is.logical(data[,deparse(substitute(xvar))])) {
gg <- gg + scale_x_discrete(breaks = xaxis.breaks, expand = expand_scale(mult=c(0.05)))
}
else(gg <- gg + scale_x_continuous(breaks = xaxis.breaks))
if (isTRUE(panels)){
fmla <- as.formula(paste0("~", substitute(groupvar)))
gg <- gg + facet_wrap(fmla, scales = "free", nrow = nrow.panels)
}
gg
}
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