順便說一句，設置dyPlotter命令不起作用，因爲它爲繪圖中的所有dySeries全局設置繪圖儀。至少這就是我所認爲的。
所以不用再說了，這是我的代碼。爲了顯示所有功能，我添加了更多的測試數據。
測試數據：
library(xts)
library(dygraphs)
test<-xts(matrix(rnorm(100*4), ncol=4, nrow=100), order.by=seq.POSIXt(as.POSIXct("2017-01-01 00:00", tz="UTC"),by=3600, length.out = 100))
colnames(test)<-c("Series_A","Series_B", "Series_C", "Series_D")
功能：
dy_position<-function(data_final, plot_title, y2_names=NULL, y1_label, y2_label, y1_step=F, y2_step=F, stacked=T){
data_final<-reorder_xts(data_final, y2_names) #reorder necessary so that all y2 are at the right end of the xts. Needed for the multibar plot
dyg <- dygraphs::dygraph(data_final, main=plot_title)
dyg <- dygraphs::dyAxis(dyg, "x", rangePad=20)
dyg <- dygraphs::dyAxis(dyg, "y", label = y1_label,
axisLabelWidth = 90)
y1_names<-colnames(data_final)[!(colnames(data_final) %in%y2_names)]
if (length(y1_names)==1){
stacked<-T #in this case only stacking works
}
if (stacked){
dyg <- dygraphs::dyOptions(dyg,stepPlot=y1_step,stackedGraph = T)
for(i in seq_along(y1_names)) {
dyg <- dygraphs::dySeries(dyg, y1_names[i], axis = "y", strokeWidth = 1.5, stepPlot = y1_step, plotter=" function barChartPlotter(e) {
var ctx = e.drawingContext;
var points = e.points;
var y_bottom = e.dygraph.toDomYCoord(0);
ctx.fillStyle = e.color;
// Find the minimum separation between x-values.
// This determines the bar width.
var min_sep = Infinity;
for (var i = 1; i < points.length; i++) {
var sep = points[i].canvasx - points[i - 1].canvasx;
if (sep < min_sep) min_sep = sep;
}
var bar_width = Math.floor(2.0/3 * min_sep);
// Do the actual plotting.
for (var i = 0; i < points.length; i++) {
var p = points[i];
var center_x = p.canvasx;
ctx.fillRect(center_x - bar_width/2, p.canvasy,
bar_width, y_bottom - p.canvasy);
ctx.strokeRect(center_x - bar_width/2, p.canvasy,
bar_width, y_bottom - p.canvasy);
}
}")
}
} else {
dyg <- dygraphs::dyOptions(dyg,stepPlot=y1_step)
for(i in seq_along(y1_names)) {
#plotter in function
dyg <- dygraphs::dySeries(dyg, y1_names[i], axis = "y", strokeWidth = 1.5, stepPlot = y1_step, plotter =multibar_combi_plotter(length(y2_names)))
}
}
# put stuff on y2 axis
dyg <- dygraphs::dyAxis(dyg, "y2", label = y2_label, independentTicks = T)
for(i in seq_along(y2_names)) {
dyg <- dygraphs::dySeries(dyg, y2_names[i], axis = "y2", strokeWidth = 1.5, stepPlot = y2_step)
}
return(dyg)
}
#we need to take into account all values and then leave out the ones we do not like
multibar_combi_plotter<-function(num_values){
#plotter function
plotter_text<-"function multiColumnBarPlotter(e) {
// We need to handle all the series simultaneously.
if (e.seriesIndex !== 0) return;
var g = e.dygraph;
var ctx = e.drawingContext;
var sets = e.allSeriesPoints;
var y_bottom = e.dygraph.toDomYCoord(0);
// Find the minimum separation between x-values.
// This determines the bar width.
var min_sep = Infinity;
for (var j = 0; j < sets.length-%s; j++) {
var points = sets[j];
for (var i = 1; i < points.length; i++) {
var sep = points[i].canvasx - points[i - 1].canvasx;
if (sep < min_sep) min_sep = sep;
}
}
var bar_width = Math.floor(2.0/3 * min_sep);
var fillColors = [];
var strokeColors = g.getColors();
for (var i = 0; i < strokeColors.length; i++) {
fillColors.push(strokeColors[i]);
}
for (var j = 0; j < sets.length-%s; j++) {
ctx.fillStyle = fillColors[j];
ctx.strokeStyle = strokeColors[j];
for (var i = 0; i < sets[j].length; i++) {
var p = sets[j][i];
var center_x = p.canvasx;
var x_left = center_x - (bar_width/2) * (1 - j/(sets.length-%s-1));
ctx.fillRect(x_left, p.canvasy,
bar_width/sets.length, y_bottom - p.canvasy);
ctx.strokeRect(x_left, p.canvasy,
bar_width/sets.length, y_bottom - p.canvasy);
}
}
}"
custom_plotter <- sprintf(plotter_text, num_values, num_values, num_values)
return(custom_plotter)
}
reorder_xts<-function(xts_series,line_names){
bar_names<-colnames(xts_series)[!(colnames(xts_series)%in%line_names)]
xts_series<-xts_series[,c(bar_names,line_names)]
return(xts_series)
}
一些解釋：
dy_position做所有的繪圖。它使用每個系列軸的單獨繪圖儀。
reorder_xts是需要確保所有線圖都位於xts的右端。這是多條線圖所需要的。因爲java腳本循環遍歷所有系列（集合）以確定條的寬度，所以我們需要確保我們沒有循環遍歷線圖的系列。否則，我們有更多的酒吧。
multibar_combi_plotter確實如此。它接受一個數字參數lines_names並修改javascript字符串，以便它遍歷除line_names之外的所有圖（即xts右側的最後一個系列）。在sprintf命令的字符串中注意幾個小號%s！之後它返回繪圖儀作爲dySeries參數的character。
所有的javascript代碼直接來自dygraphs文件夾中的例子。
下面是一些例子...
例子：
dy_position(test,plot_title = "Test1", y2_names = c("Series_C","Series_D"),y1_label = "Axis1", y2_label = "Axis2", stacked=F)
dy_position(test,plot_title = "Test1", y2_names = c("Series_C","Series_D"),y1_label = "Axis1", y2_label = "Axis2", stacked=T)
dy_position(test,plot_title = "Test1", y2_names = c("Series_B","Series_C","Series_D"),y1_label = "Axis1", y2_label = "Axis2", stacked=T)
dy_position(test,plot_title = "Test1", y2_names = c("Series_D"),y1_label = "Axis1", y2_label = "Axis2", stacked=F)
dy_position(test,plot_title = "Test1", y2_names = c("Series_D"),y1_label = "Axis1", y2_label = "Axis2", stacked=T)
dy_position(test,plot_title = "Test1", y2_names = NULL ,y1_label = "Axis1", y2_label = "Axis2", stacked=F)
dy_position(test,plot_title = "Test1", y2_names = NULL ,y1_label = "Axis1", y2_label = "Axis2", stacked=T)
謝謝！這回答了我的問題。我要修改你的代碼，使得y軸的尺寸相同，但這非常有幫助。 –