下载rpivotTable输出闪亮 [英] download rpivotTable ouput in shiny

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本文介绍了下载rpivotTable输出闪亮的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我发现一个有趣的包 rpivotTable
我想创建闪亮的应用程序,其中包括 rpivotTable ,可以使用 downloadHandler



但是,我无法找到解决方案,如何创建数据。框架或其他可以传递给 downloadHandler 功能的其他内容。



rpivotTable 创建一个类的对象:

  class(pivot) 
[1]rpivotTablehtmlwidget

是thren任何下载输出的可能性的这个功能?



另外,我附上了一个例子,如何创建闪光的枢轴以及我想使用的下载功能的例子。 p>

也许是任何其他想法或建议吗?

  set.seed 1992)
n = 99
年份< - sample(2013:2015,n,replace = TRUE,prob = NULL)
Month< - sample(1:12,n,replace = TRUE,prob = NULL)
类别< - sample(c(Car,Bus,Bike),n,replace = TRUE,prob = NULL)
品牌< ,n,replace = TRUE,prob = NULL)
品牌< - paste0(品牌,样本(1:14,n,替换= TRUE,prob = NULL))
USD < rnorm(n))* 100

df< - data.frame(年,月,类别,品牌,美元)



输出$ Pivot< - rpivotTable :: renderRpivotTable({
rpivotTable(data = df,rows =Brand,col =Category,vals =USD,aggregatorName =Sum,rendererName =Table )
})



输出$ downloadData< - downloadHandler(
filename = function(){paste(filename,'.csv' sep ='')},
content = function(file){
write.csv(PivotOutput,file)
})


解决方案

我刚刚在github上推送了rpivotTable的主分支,解决了获取用户参数的问题是/已经在服务器端看过e。



使用 devtools 下载 rpivotTable 代码:

  devtools :: install_github(smartinsightsfromdata / rpivotTable,ref =master)

这是一个如何在服务器端获取所选数据的示例。该示例不完整满足您的需求:您需要将原始数据框架与从rpivotTable返回的内容进行子集。但是这应该足够给你一个开端。

 库(rpivotTable)
库(闪亮)

list_to_string< - function(obj,listname){
if(is.null(names(obj))){
paste(listname,[[,seq_along )]] =,obj,
sep =,collapse =\\\

} else {
粘贴(listname,$,names(obj) ,=,obj,
sep =,collapse =\\\

}
}

服务器&输出){

输出$ pivotRefresh< - renderText({

cnames< - list(cols,rows,vals aggregateatorName,rendererName)
#对所有键应用一个函数,以获取相应的值
allvalues< - lapply(cnames,function(name){
item& $ myPivotData [[name]]
if(is.list(item)){
list_to_string(item,name)
} else {
paste(name,item,sep = =)
}
})
贴(allvalues,collapse =\\\

})

输出$ mypivot = renderRpivotTable({
rpivotTable(data = cars,onRefresh = htmlwidgets :: JS(function(config){Shiny.onInputChange('myPivotData' } $)


ui< - shinyUI(fluidPage(
fluidRow(column(6,verbatimTextOutput(pivotRefresh)),
列(6,rpivotTableOutput(mypivot)))



shinyApp(ui = ui,server = server)


I've found an interesting package rpivotTable. I'd like to create shiny app which includes rpivotTable with the possibility to download generated data using downloadHandler.

However, I am unable to find the solution, how to create data.frame or something else which I'd be able to pass to the downloadHandler function.

rpivotTable creates an object of class:

class(pivot)
[1] "rpivotTable" "htmlwidget" 

Is threne any possibilities to download the output of the this function?

Also, I enclose the example, how the pivot is created in shiny and the example of download function which I'd like to use.

Maybe are the any other ideas or suggestions?

set.seed(1992)
n=99
Year <- sample(2013:2015, n, replace = TRUE, prob = NULL)
Month <- sample(1:12, n, replace = TRUE, prob = NULL)
Category <- sample(c("Car", "Bus", "Bike"), n, replace = TRUE, prob = NULL)
Brand <- sample("Brand", n, replace = TRUE, prob = NULL)
Brand <- paste0(Brand, sample(1:14, n, replace = TRUE, prob = NULL))
USD <- abs(rnorm(n))*100

df <- data.frame(Year, Month, Category, Brand, USD)



output$Pivot <- rpivotTable::renderRpivotTable({
 rpivotTable(data = df, rows = "Brand", col = "Category", vals = "USD", aggregatorName = "Sum", rendererName = "Table")
})



  output$downloadData <- downloadHandler(
   filename = function() { paste(filename, '.csv', sep='') },
   content = function(file) {
   write.csv(PivotOutput, file)
})

解决方案

I've just pushed on the master branch of rpivotTable on github a change that addresses the issue of getting the parameters the user is / has looked at on the server side.

Download the rpivotTable code with devtools:

devtools::install_github("smartinsightsfromdata/rpivotTable",ref="master")

This is an example of how to get the selected data on the server side. The example is not complete for your needs: you need to subset the original data frame with what you get back from rpivotTable. But this should be enough to give you an head start.

library(rpivotTable)
library(shiny)

list_to_string <- function(obj, listname) {
  if (is.null(names(obj))) {
    paste(listname, "[[", seq_along(obj), "]] = ", obj,
          sep = "", collapse = "\n")
  } else {
    paste(listname, "$", names(obj), " = ", obj,
          sep = "", collapse = "\n")
  }
}

server <- function(input, output) {

output$pivotRefresh <- renderText({

cnames <- list("cols","rows","vals", "exclusions","aggregatorName", "rendererName")
# Apply a function to all keys, to get corresponding values
allvalues <- lapply(cnames, function(name) {
  item <- input$myPivotData[[name]]
  if (is.list(item)) {
    list_to_string(item, name)
  } else {
    paste(name, item, sep=" = ")
  }
})
paste(allvalues, collapse = "\n")
})

output$mypivot = renderRpivotTable({
    rpivotTable(data=cars, onRefresh=htmlwidgets::JS("function(config) { Shiny.onInputChange('myPivotData', config); }"))
  })
}

ui <- shinyUI(fluidPage(
  fluidRow(column(6,   verbatimTextOutput("pivotRefresh")),
           column(6, rpivotTableOutput("mypivot") ))
)
)

shinyApp(ui = ui, server = server) 

这篇关于下载rpivotTable输出闪亮的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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