我想使用dygraph创建一个条形图和折线图,这似乎应该可以基于“条形图和线条图”dygraphs示例here以及dyBarChart()
{{ dygraphs包中提供了3}}。
使用自定义包装器,我可以创建一个条形图,所以我认为代码正常工作:
library(dygraphs)
dyBarChart <- function(dygraph) {
dyPlotter(
dygraph = dygraph,
name = "BarChart",
path = system.file("examples/plotters/barchart.js",package = "dygraphs")
)
}
lungDeaths <- cbind(ldeaths, mdeaths)
dygraph(lungDeaths) %>%
dyBarChart()
我假设我可以使用dySeries()
来自定义我想用线条/条显示的系列,但以下两种方法都没有。它们不会出错,但不会创建任何内容。我也不确定"linePlotter"
是否是正确的绘图员名称,但不管怎样,我需要一些帮助。
# doesn't work
dygraph(lungDeaths) %>%
dyBarChart() %>%
dySeries("ldeaths", plotter = "linePlotter")
# also doesn't work:
dygraph(lungDeaths) %>%
dySeries("ldeaths", plotter = "dyBarChart") %>%
dySeries("mdeaths", color = "blue")
感谢。
答案 0 :(得分:2)
有时候你很幸运...我几周前就已经做过同样的工作了,我发现文档不是很清楚如何做到这一点。但你自己很亲密。
如何操作 - 一步一步:
plotter
参数不带函数名称。但它需要是一个javascript函数作为纯文本 BTW,设置dyPlotter
命令不起作用,因为它为绘图中的所有dySeries全局设置绘图仪。至少这就是我的想法。
所以不用多说,这是我的代码。我添加了一些测试数据只是为了显示所有功能。
测试数据:
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")
<强>功能强>
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)
}
一些说明:
dy_position
执行所有绘图。它使用每个系列轴的单独绘图仪。
reorder_xts
以确保所有线条图都位于xts的右端。这是多杆图需要的。因为java脚本循环遍历所有系列(集合)以确定条的宽度,我们需要确保我们不循环遍历线图的系列。否则我们有额外的酒吧。
multibar_combi_plotter
正是如此。它需要一个数字参数lines_names
并修改javascript字符串,以便它循环遍历所有绘图,除了line_names(即xts右边部分的最后一个系列)。注意%s
命令的字符串中有几个sprintf
!之后,它将绘图仪返回为character
,用于dySeries参数。
所有javascript代码都直接来自dygraphs文件夹中的示例。
以下是一些例子......
<强>示例:强>
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)
答案 1 :(得分:0)
我不确定这正是你想要的。我的建议接近于条形图和线条图的组合,而不需要创建单独的函数。
您可以使用dySeries
设置每个系列的绘图类型。您可以选择行图(默认),stepPlot
和stemPlot
。此外,您可以设置为使用drawPoints
和pointSize
查看积分,您也可以选择使用fillGraph
来填充图表。对于其他选项,请键入?dySeries
代码如下:
library(dygraphs)
lungDeaths <- cbind(ldeaths, mdeaths)
dygraph(lungDeaths, main = "Main Title") %>%
dySeries("ldeaths", drawPoints = FALSE) %>%
dySeries("mdeaths", stepPlot = TRUE, fillGraph = TRUE)
产生这个情节:
请让我知道这是否是你想要的。
答案 2 :(得分:0)
经过一番研究后,我认为这是最简单的。至少这对我来说就是这样。
您需要下载http://dygraphs.com/tests/plotters.html
处提供的“barseries.js”文件然后代码就像这样
<a href="/link.html" class="gallery-item">
<div style="background-image: url('https://picsum.photos/250/?random')" class="staticimage"></div>
<div style="background-image: url('https://picsum.photos/251/?random')" class="hoverimage"></div>
</a>
产生这个结果