#' D3Barplot
#'
#' <Add Description>
#'
#' @import htmlwidgets
#'
#' @export
d3Barplot <- function(data, se = NULL,
col='black', beside=FALSE, tooltip=NULL, las = 1,
unit='', xlab='', ylab='', padding=0.1, legend=NULL,
legend_title=NULL,legend_pos='topright',legend_right_offset = 100,
show_axes = TRUE, title=NULL, title_size=24, subtitle=NULL,
callback='BarSelection', yrange=NULL,
margins = NULL, width = NULL, height = NULL,
elementId = NULL, collection = FALSE) {
if (is.null(margins)){
margins <- list(top = 40,
right = 20,
bottom = 50,
left = 60)
}
if (!is.null(yrange) && length(yrange) != 2){
stop("If yrange is specified it needs to have a length of 2")
}
#Fix the coloring
col <- gplots::col2hex(col)
#if we have only one variable
if (is.null(dim(data))){
singleVar = TRUE
data <- data.frame(x=data)
#fix the coloring
if(length(col)==1){
col <- rep(col,nrow(data))
}
#if there is a standard error specified
if (!is.null(se)){
if (length(se) != nrow(data)){
stop('If standard error is specified there nees to be a SE value for each bar')
}
data$SE <- se
}
#grouped / stacked barplot
}else{
singleVar = FALSE
data <- data.frame(data,stringsAsFactors = F)
if(length(col)!=ncol(data)){
stop('Need to specify one color for each variable')
}
#if there is a standard error specified
if (!is.null(se)){
if (all(dim(se) != dim(data))){
stop('If standard error is specified there nees to be a SE value for each bar')
}
if (!is.null(colnames(se)) && colnames(se) != colnames(data)){
stop('If column names on SE are specified, they need to match the data names')
}
colnames(se) <- paste0('SE_',colnames(data))
data <- cbind(data,se)
}
}
#get max value
if (beside){
max_value <- max(data)
} else {
max_value <- max(rowSums(data))
}
#separate names and data
data$name <- rownames(data)
rownames(data) <- NULL
if (!is.null(tooltip)){
data$tooltip <- tooltip;
}
#figure out legend positioning
if (!is.null(legend)){
if (legend_pos == 'topleft'){
legend_pos <- c(0,0)
}else if (legend_pos == 'top'){
legend_pos <- c(0,1)
}else if (legend_pos == 'topright'){
legend_pos <- c(0,2)
}else if (legend_pos == 'right'){
legend_pos <- c(1,2)
}else if (legend_pos == 'bottomright'){
legend_pos <- c(2,2)
}else if (legend_pos == 'bottom'){
legend_pos <- c(2,1)
}else if (legend_pos == 'bottomleft'){
legend_pos <- c(2,0)
}else if (legend_pos == 'left'){
legend_pos <- c(1,0)
}else{
stop('legend_pos needs to be "top","right","left","bottom","bottomright",..')
}
}
# forward options using x
x = list(
type = "d3Barplot",
data = data,
SE = !is.null(se),
fill = col,
unit = unit,
xlab = xlab,
ylab = ylab,
las = las,
singleVar = singleVar,
beside = beside,
show_axes = show_axes,
yrange = yrange,
padding = padding,
title = title,
title_size = paste0(title_size,'px'),
legend = legend,
legend_title=legend_title,
legend_pos=legend_pos,
legend_right_offset=legend_right_offset,
max_value = max_value,
subtitle = subtitle,
margins=margins,
callback = callback
)
if (collection){
return(x)
}else{
# create widget
htmlwidgets::createWidget(
name = 'd3Barplot',
x,
width = width,
height = height,
package = 'd3Toolbox',
elementId = elementId,
sizingPolicy = htmlwidgets::sizingPolicy(browser.fill = TRUE)
)
}
}
#' Shiny bindings for D3Barplot
#'
#' Output and render functions for using D3Barplot within Shiny
#' applications and interactive Rmd documents.
#'
#' @param outputId output variable to read from
#' @param width,height Must be a valid CSS unit (like \code{'100\%'},
#' \code{'400px'}, \code{'auto'}) or a number, which will be coerced to a
#' string and have \code{'px'} appended.
#' @param expr An expression that generates a D3Barplot
#' @param env The environment in which to evaluate \code{expr}.
#' @param quoted Is \code{expr} a quoted expression (with \code{quote()})? This
#' is useful if you want to save an expression in a variable.
#'
#' @name d3Barplot-shiny
#'
#' @export
d3BarplotOutput <- function(outputId, width = '100%', height = '400px'){
htmlwidgets::shinyWidgetOutput(outputId, 'd3Barplot', width, height, package = 'd3Toolbox')
}
#' @rdname d3Barplot-shiny
#' @export
renderd3Barplot <- function(expr, env = parent.frame(), quoted = FALSE) {
if (!quoted) { expr <- substitute(expr) } # force quoted
htmlwidgets::shinyRenderWidget(expr, d3BarplotOutput, env, quoted = TRUE)
}
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