R: rhandsontable 不显示过滤后的反应内容

Question

我有一个显示 editable rhandsontable 并在绘图中显示 table 输出的 Shiny 应用程序。只要我将 "complete" 反应数据帧发送到 rhandsontable 一切都很好，但是当我想用 selectInput 值对显示的内容进行子集化时，应用程序中断并显示以下错误消息：

Listening on http://127.0.0.1:5362

Warning: Error in matrix: 'data' must be of a vector type, was 'NULL'

Stack trace (innermost first): 60: matrix 59: 58: do.call 57: hot_to_r 56: observerFunc [P:/Mango Engagement/00-CLAIMS/00-shiny-SPRINT3/20190211-shiny-broken-reactive-values-editable-table-plot.R#57] 1: runApp

ERROR: [on_request_read] connection reset by peer

关于如何进行的任何想法？在下面的脚本中，您可以通过 react_df() 的 commenting/uncommenting 定义重现该问题。

library(shiny)
library(rhandsontable)
library(dplyr)
library(ggplot2)

#### based on the SO code found here: 

df <- data.frame(country = c(rep('US', 5), rep('UK', 5)),
           date = rep(as.Date(c('2018-01-01', '2018-02-01', '2018-03-01', '2018-04-01', '2018-05-01')), 2),
           val = rep(sample(6:8, size = 5, replace = T), 2))



ui <- fluidPage(
  selectInput("country", "Choose the Country",
              choices = df %>% unique() %>%  pull(country),
              selected = 'US',
              multiple = FALSE),
  rHandsontableOutput('table'), # editable table with bar heights
  plotOutput('plot')#, # bar plot that takes values from the drop-down menu and the editable table 
)


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

#### REACTIVE INPUT: SUBSETTED VERSUS COMPLETE DATA ####  
## subsetted version of react_df() 

#  react_df <- reactive({
#    df %>%
#      filter(country == input$country)
#  })

## complete version of react_df()   
  react_df <- reactive({df})

  values <- reactiveValues(data = NULL)


  observe({
    values$data <-react_df()
  })


  #observe the  table
  observe({
    if(!is.null(input$table))
      values$data <- hot_to_r(input$table)
  })

  # output the table 
  output$table <- renderRHandsontable({
    req(values$data)
    rhandsontable(values$data)
  })


# update the plot  
  output$plot <- renderPlot({
    req(values$data)
    ggplot(values$data, aes(date, val)) +
      geom_line() +
      geom_point()

  })

})

shinyApp(ui = ui, server = server)

Answer 1

正如@A.Suliman指出的那样，问题是在旧的 R 包上引起的。具有更新包的相同代码运行未返回任何错误。感谢您的帮助！

R: rhandsontable 不显示过滤后的反应内容

R: rhandsontable does not display filtered reactive content

r

shiny

rhandsontable