使用闪亮的

时间:2015-12-24 14:14:06

标签: r ggplot2 shiny r-markdown

我试图使用RStudio中的闪亮来创建带有动态图的RMarkdown。 我的数据描述了销售点交易,如下所示:

Date|Time|Timestamp|CustomerID|Amount|City
11-Nov-15,0:00:59,11/11/15 00:00:59,6350000476,214584,City A
11-Nov-15,0:00:59,11/11/15 00:01:00,7800004763,165,City B
11-Nov-15,0:01:00,11/11/15 00:01:01,4547000063,65132,City C
11-Nov-15,0:01:01,11/11/15 00:01:34,6350000476,4676,City C
11-Nov-15,0:01:34,11/11/15 00:01:36,4657000063,16556,City A
11-Nov-15,0:01:36,11/11/15 00:02:55,7800009476,684,City A

数据集大约有250,000行。

我有一个十个城市的列表,我打算从一个下拉列表中选择读者,Timestamp上的散点图为x-axis Amount上的y-axis。为了在可视化中提供清晰度,我还希望在滑块上选择Amount值。

简单地说,我试图重新创建找到的内容here

我试过的代码在这里:

{r, echo=FALSE}
require(ggplot2)

inputPanel(
 selectInput("city_choose", label = "Select city",
              choices = c("City A"="City A","City B"="City B", "City C"="City C",multiple=TRUE ), selected ="City C" ),

 sliderInput("amount_adjust", label = "Amount",min = 0, max = 350000, value = 1, step = 10000)
)

renderPlot({
  ggplot(data=d2, aes(x=timestamp,y=amount_adjust,color=city_choose))+ geom_point()
})

问题

  • 我的数据位于d2。 RStudio无法找到'它。我通过使用RScript在会话开始时手动将其加载到内存中来解决它,但是有更好的方法吗?
  • 该图使用selectInputsliderInput中的值,但我不确定如何在绘图功能中调用它们。我已经尝试了input$city_chooseas.Text(input$city_choose)city_choose。其中没有一个可以找到'。我对Amount列有同样的问题。如何通过从下拉列表和滑块中获取值来绘制图形,如示例所示?
  • 我也无法使用server.R / ui.R设置。我想要RMarkdown中的输出,我可以自由分享。

1 个答案:

答案 0 :(得分:4)

这里有一些基本上有用的东西,虽然我不确定你追求的是什么样的情节。这是R-markdown文件:

---
title: "City Plot"
author: "Someone"
date: "December 24, 2015"
runtime: shiny
output: html_document
---

Test 

```{r,echo=F}
require(ggplot2)
shinyApp(
  ui = fluidPage(
    selectInput("city_choose", label = "Select city",
               choices = c("City A"="City A","City B"="City B", 
                           "City C"="City C",multiple=TRUE ), selected ="City C" ),

    sliderInput("amount_adjust", 
                 label = "Amount",min = 1, max = 10, value = 1, step = 1),
    plotOutput("cityplt")
  ),
  server = function(input, output) {
    set.seed(1234)
    n <- 200
    sdate <- as.POSIXct("2015-11-11 00:00:00",tz="UCT")
    edate <- as.POSIXct("2015-11-11 23:59:59",tz="UCT")
    d3 <- data.frame(
      Timestamp =  as.POSIXct(runif(n,sdate,edate),tz="UCT",origin="1970-01-01"),
      Amount = runif(n,10000,1000000),
      City = sample(c("City A","City B","City C"),n,replace=T)
    )
    d3 <- d3[ order(d3$Timestamp), ]

    output$cityplt <- renderPlot({
      d4 <- d3[ d3$City==input$city_choose, ] 
      d4$AdjAmount <- input$amount_adjust*d4$Amount
      ggplot(data=d4,aes(x=Timestamp,y=AdjAmount)) + 
        geom_bar(stat="Identity") +
        labs(title=input$city_choose)
    })
  },
  options = list(height = 800)
)

```

Finished

的产率:

enter image description here