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使用shiny和plotly显示在R中创建的条形图的值

ggplotly shiny plotly ggplot2 r

Ashmin Kaul · 技术社区 · 7 年前

如果您运行下面的R shiny脚本,我们在仪表板中得到两个框,左侧框有一个条形图,右侧有一个DT表,当我使用event\u数据(“plotly\u click”)单击图表的任何一个条时,我希望相应的员工显示在表中,就像单击第一个条时一样,“r1”应该显示在表中。我试图执行“user\u cases$base1[d[3]]”,但它抛出了一个错误,即“错误:无效的下标类型‘list’”。我会附上快照作为参考,请帮我做同样的事情。

## app.R ##
library(shiny)
library(shinydashboard)
library(ggplot2)
library(plotly)
library(DT)
ui <- dashboardPage(
dashboardHeader(title = "Sankey Chart"),
dashboardSidebar(
width = 0
),
dashboardBody(
box(title = "Sankey Chart", status = "primary",height = "455" ,solidHeader = 
T,
plotlyOutput("sankey_plot")),

box( title = "Case Summary", status = "primary", height = "455",solidHeader 
= T, 
     dataTableOutput("sankey_table"))
)
)
server <- function(input, output) 
{ 

output$sankey_plot <- renderPlotly({
height2 = c(56,45,23,19,8)
base1 = c("r1","r4","r2","r5","r3")
user_cases = data.frame(base1,height2)
pp1 <<- ggplot(user_cases, aes(x = reorder(base1,-height2), y = height2)) + 
  geom_bar(stat = "identity", fill = "#3399ff" ) + scale_y_discrete(name 
="Cases") + scale_x_discrete(name = "Employee")
ggplotly(pp1, tooltip="text",height = 392)
})
output$sankey_table <- renderDataTable({
d <- event_data("plotly_click")
user_cases$base1[d[3]]
})
}
shinyApp(ui, server)

要提取的数据集

我正试图从bupaR图书馆的患者数据集中获取数据子集。执行此操作的代码如下:

patients_final <- patients[patients$employee == as.data.frame( 
user_time$employee[as.numeric(d[3])])]

但我得到的错误是:“无法使用矩阵或数组进行列索引”附加快照以获得帮助。

1 回复 | 直到 7 年前

SBista 7 年前

看一下修改后的代码,我改了 user_cases$base1[d[3]] 至as。数据帧(user\u cases$base1[as.numeric(d[3])])

 ## app.R ##
  library(shiny)
  library(shinydashboard)
  library(ggplot2)
  library(plotly)
  library(DT)


  height2 = c(56,45,23,19,8)
  base1 = c("r1","r4","r2","r5","r3")
  user_cases = data.frame(base1,height2)


  ui <- dashboardPage(
    dashboardHeader(title = "Sankey Chart"),
    dashboardSidebar(
      width = 0
    ),
    dashboardBody(
      box(title = "Sankey Chart", status = "primary",height = "455" ,solidHeader = 
            T,
          plotlyOutput("sankey_plot")),

      box( title = "Case Summary", status = "primary", height = "455",solidHeader 
           = T, 
           dataTableOutput("sankey_table"))
    )
  )


  server <- function(input, output) 
  { 

    output$sankey_plot <- renderPlotly({

      pp1 <<- ggplot(user_cases, aes(x = reorder(base1,-height2), y = height2)) + 
        geom_bar(stat = "identity", fill = "#3399ff" ) + scale_y_discrete(name 
                                                                          ="Cases") + scale_x_discrete(name = "Employee")
      ggplotly(pp1, tooltip="text",height = 392)
    })
    output$sankey_table <- renderDataTable({
      d <- event_data("plotly_click")
     as.data.frame( user_cases$base1[as.numeric(d[3])])
    })
  }
  shinyApp(ui, server)

输出如下:

dataframe 根据您的要求输出。

希望有帮助!