有没有办法在R中使用普通的Dygraphs JavaScript选项(具体来说,还有Shiny)?
http://dygraphs.com/options.html

我认为htmlwidgets包中的JS()函数可以使用,但不确定。

例如,我想使用highlightSeriesOpts(参见第一个链接)突出显示书本图中的单个系列,以便仅在图例中显示选定的系列(默认情况下并非同时显示所有系列)。以下链接中的下部2个图准确显示了要实现的目标:
http://dygraphs.com/gallery/#g/highlighted-series

已经提供了CSS解决方案(即.dygraph-legend {display: none;}.dygraph-legend .highlight {display: inline;}),但是在R / Shiny中不起作用。

无论如何,这是我的概念脚本。它不起作用,但是所有建议都值得赞赏。

ui <- fluidPage(

  sidebarLayout(
    sidebarPanel(),
    mainPanel(dygraphOutput("plot"))

  )

)

server <- function(input, output) {

  set.seed(123)
  data <- matrix(rnorm(12), ncol = 2)
  data <- ts(data)

  # Workaround for what might be a bug
  # Reference: http://stackoverflow.com/questions/28305610/use-dygraph-for-r-to-plot-xts-time-series-by-year-only
  data <- cbind(as.xts(data[,1]), as.xts(data[,2]))

  colnames(data) <- c("Series 1", "Series 2")
  #print(data) # Uncomment to view data frame

  # The logic of the following is that plain Dygraphs JavaScript
  # code can be used as plotting material
  output$plot <- JS("
                     new Dygraph(plot,
                                 data,
                                 { highlightSeriesOpts: {strokeWidth: 3} });

                     g.updateOptions({ highlightSeriesOpts: {strokeWidth: 3} });

                    ")

}

shinyApp(ui = ui, server = server)

最佳答案

highlightSeriesOpts导致突出显示的系列笔划变粗,并且不影响图例。您仍然需要适当的CSS以仅显示图例中最接近的系列。要按照您的建议设置highlightSeriesOpts,在http://rstudio.github.io/dygraphs/gallery-series-highlighting.html上有一个清晰的示例。

lungDeaths <- cbind(ldeaths, mdeaths, fdeaths)

dygraph(lungDeaths, main = "Deaths from Lung Disease (UK)") %>%
  dyHighlight(highlightSeriesOpts = list(strokeWidth = 3))


要获得Shiny中更完整的答案,我们可以做这样的事情。

library(shiny)
library(dygraphs)

lungDeaths <- cbind(ldeaths, mdeaths, fdeaths)

ui <- dygraph(lungDeaths, main = "Deaths from Lung Disease (UK)") %>%
  dyHighlight(highlightSeriesOpts = list(strokeWidth = 3)) %>%
  dyCSS(textConnection("
     .dygraph-legend > span { display: none; }
     .dygraph-legend > span.highlight { display: inline; }
  "))

server <- function(input,output,session){

}

shinyApp(ui,server)

关于javascript - R/Shiny中的Plain Dygraphs JavaScript选项,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/35943583/

10-12 22:39