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#' dcrowchart adds a row chart to the dashboard
#'
#' \code{dcrowchart} generates a horizontal bar chart
#'
#' @docType methods
#' @param x column name of data frame \code{data} for drawing a row chart
#' @param title character for the title of the generated row chart
#' @param spansize integer between 1 to 12 for the width of the element in the web page
#' @param width integer for the width (in pixels) of the chart in the web page
#' @param height integer for the height (in pixels) of the chart in the web page
#' @export
#' @examples
#' dashboard_open(data=iris) # other options: pathoutput=getwd() ...
#' dcpiechart(x=names(iris)[5])
#' dcbarchart(x=names(iris)[1] , gap=75)
#' dcrowchart(x=names(iris)[5] )
#' dcpiechart(x=names(iris)[2])
#' dctable(index=names(iris)[5])
#' dashboard_launch(browse = FALSE) # Just generates files. Server is not launched
#'
dcrowchart <- function(
x,
title=paste(x,"row chart"),
spansize=4,
width=dashboard.env$outerwidth*spansize/12,
height=250
){
# dimension name is used by convention (DC.js)
dimension = x
if (spansize==12 || (dashboard.env$sumspaninrow + spansize) > 12) {
# close the previous row, write in a row then start a new one
linebreak()
}
dashboard.env$numeltgraph <- dashboard.env$numeltgraph + 1
dashboard.env$nbelementinrow <- dashboard.env$nbelementinrow + 1
dashboard.env$sumspaninrow <- dashboard.env$sumspaninrow + spansize
dashboard.env$temp <- paste(dashboard.env$temp,"<div class='span",spansize,"' id='dc-chart-",dashboard.env$numeltgraph,"'><h4>",title," <span><a class='reset' href='javascript:dcChart",dashboard.env$numeltgraph,".filterAll();dc.redrawAll();' style='display: none;'> reset </a> </span> </h4> </div>", sep="")
# js temp head : Create the dc.js chart objects & link to div
dashboard.env$jstemphead <- paste(dashboard.env$jstemphead, " var dcChart",dashboard.env$numeltgraph,"= dc.rowChart('#dc-chart-",dashboard.env$numeltgraph,"'); ",sep="")
# js temp core
dashboard.env$jstempcore <- paste(dashboard.env$jstempcore, "
var dcChartDim", dashboard.env$numeltgraph," = records.dimension(function (d) {
return d.",dashboard.env$matchlistcolnb [match(dimension, dashboard.env$listcol)],";
}),
dcChartGroup", dashboard.env$numeltgraph," = dcChartDim", dashboard.env$numeltgraph,".group().reduceCount(function (d) {
return d.",dashboard.env$matchlistcolnb [match(dimension, dashboard.env$listcol)],";
}),
xMin = d3.min(dataset, function (d) { return d.",dashboard.env$matchlistcolnb [match(dimension, dashboard.env$listcol)],"; }),
xMax = d3.max(dataset, function (d) { return d.",dashboard.env$matchlistcolnb [match(dimension, dashboard.env$listcol)],"; });
dcChart", dashboard.env$numeltgraph,".width(",width,").height(",height,") .margins(margin)
.dimension(dcChartDim", dashboard.env$numeltgraph,")
.group(dcChartGroup", dashboard.env$numeltgraph,")
.transitionDuration(500)
.x(d3.scale.linear().domain([xMin- (xMax -xMin)/10, xMax+(xMax -xMin)/10]))
.colors(d3.scale.category10())
.label(function (d){
return d.key;
})
.elasticX(true)
.xAxis();
",sep="")
if (spansize==12 || (dashboard.env$sumspaninrow + spansize) > 12) {
# close the previous row, write in a row then start a new one
linebreak()
}
}
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