将 onclick 打开超链接事件添加到在 R 中创建的 html 小部件

我希望能够做类似的事情这个的答案但不使用闪亮。我还想绑定打开与数据点关联的超链接的 onclick 事件。

我正在使用saveWidget函数来自htmlwidgets并知道我可以插入 javascript 代码appendContent函数从htmltools包裹。

这是一个小示例代码：

library(ggplot2)
library(plotly)
library(htmlwidgets)
library(htmltools)

path.test.results <- "C:\\Users\\img\\"

myData <- data.frame(x=c(1,2,3), y=c(3,2,1))
myLinks <- c("https://www.google.com/", "https://stackoverflow.com/", "https://www.r-project.org/")

ggp <- ggplot(data=myData, aes(x=x, y=y)) + geom_point()
ply <- plotly_build(ggp)

ply$elementId <- "PlotlyGraph"

#javascript <- HTML('<script>document.getElementById("htmlwidget_container").innerHTML = "test";</script>')
javascript <- HTML(paste(
        paste('<button type="button" onclick="document.getElementById(',"'", 'PlotlyGraph', "'", ').style.display=',
                "'", 'none', "'", '">Hide Plot</button>', sep=''),
        paste('<button type="button" onclick="document.getElementById(',"'", 'PlotlyGraph', "'", ').style.display=',
                "'", 'block', "'", '">Show Plot</button>', sep='')
        ,sep=''))

ply <- appendContent(ply, javascript)

saveWidget(widget=ply, file=paste(path.test.results, "test.html", sep=""), selfcontained = FALSE)
dev.off()

现在显然我正在寻求帮助，以将正确的java脚本代码保存在“javascript”变量中，然后我可以将其与appendContent集成到html小部件中。

一种方法是

• 通过添加 Javascript 代码onStaticRenderComplete为了在绘图渲染后执行它
• Javascript 事件是对示例的简单修改here
• 该 URL 通过以下方式打开window.open

对于具有不同轨迹的通用解决方案，请参阅：单击 ggplot/plotly 图表打开超链接

完整代码

library(ggplot2)
library(plotly)
library(htmlwidgets)
library(htmltools)

path.test.results <- "C:\\Users\\img\\"

myData <- data.frame(x=c(1,2,3), y=c(3,2,1), urls=c("https://www.google.com/", "http://stackoverflow.com/", "https://www.r-project.org/"))
myLinks <- c("https://www.google.com/", "http://stackoverflow.com/", "https://www.r-project.org/")

ggp <- ggplot(data=myData, aes(x=x, y=y)) + geom_point()
ply <- plotly_build(ggp)

ply$elementId <- "PlotlyGraph"

html <- HTML(paste(
  paste('<button type="button" onclick="document.getElementById(',"'", 'PlotlyGraph', "'", ').style.display=',
        "'", 'none', "'", '">Hide Plot</button>', sep=''),
  paste('<button type="button" onclick="document.getElementById(',"'", 'PlotlyGraph', "'", ').style.display=',
        "'", 'block', "'", '">Show Plot</button>', sep='')
  ,sep=''))

javascript <- HTML(paste("var myPlot = document.getElementById('PlotlyGraph');
myPlot.on('plotly_click', function(data){
var urls = ['", paste(myLinks, collapse = "', '"), "'];
window.open(urls[data.points[0].pointNumber],'_blank');
});", sep=''))

ply <- prependContent(ply, html)
ply <- prependContent(ply, onStaticRenderComplete(javascript))

saveWidget(widget=ply, file=paste(path.test.results, "test.html", sep=""), selfcontained = FALSE)