无法正确过滤Shiny应用程序中的日期

问题描述：

我有我的第一次去使用日期变量作为一个Shiny应用程序的过滤器我放在一起，我无法理解为什么代码不返回任何情况。我使用lubridate包预处理了mydf（这里仅包含我遇到的变量）的数据。我一直在尝试各种方式，包括as.Date,as_date等，但没有成功。我错过了什么？下面无法正确过滤Shiny应用程序中的日期

代码：

library(shiny) 
library(dplyr) 

mydf <- structure(list(EndDate = structure(c(17345, 17344, 17343, 17341, 
           17341, 17340, 17340, 17339, 17339, 17339, 17339, 17339, 17339, 
           17338, 17338, 17338, 17338, 17338, 17338, 17338, 17338, 17338, 
           17338, 17338, 17338, 17338, 17338, 17338, 17338, 17338, 17337, 
           17337, 17337, 17337, 17337, 17337, 17337, 17337, 17337, 17337, 
           17336, 17336, 17336, 17336, 17335, 17335, 17335, 17335, 17335, 
           17335, 17335, 17335, 17334, 17334, 17334, 17334, 17334, 17334, 
           17334, 17334, 17334, 17333, 17333, 17333, 17333, 17333, 17333, 
           17333, 17333, 17333, 17333, 17333, 17333, 17333, 17333, 17333, 
           17333, 17333, 17333, 17333, 17333, 17333, 17333, 17333, 17333, 
           17333, 17333, 17333, 17333, 17333, 17333, 17333, 17332, 17332, 
           17332, 17332, 17332, 17332, 17332, 17331, 17331, 17331, 17331, 
           17331, 17331, 17331, 17331, 17331, 17330, 17330, 17330, 17330, 
           17330, 17330, 17330, 17330, 17330, 17330, 17330, 17330, 17330, 
           17330, 17330, 17330, 17330, 17330, 17330, 17330, 17330, 17330, 
           17330, 17330, 17330, 17330, 17330, 17330, 17330, 17324, 17322, 
           17318, 17338, 17335), class = "Date")), class = c("tbl_df", "tbl", 
                        "data.frame"), row.names = c(NA, -142L), .Names = "EndDate") 

ui <- fluidPage(
    sliderInput("date", "Select dates", 
      min = min(mydf$EndDate), 
      max = max(mydf$EndDate), 
      value = c(min(mydf$EndDate), max(mydf$EndDate))), 
    tableOutput("filtered_data") 
) 

server <- function(input, output, session) { 
    filt_data <- reactive({ 
    filter(mydf, input$date[1] >= EndDate, input$date[2] <= EndDate) 
    }) 

    output$filtered_data <- renderTable({ 
filt_data() 
    }) 
} 

shinyApp(ui, server)

答

我觉得你有你的过滤条件向后从你想要什么。并且，要将Enddate显示为输出闪亮表中的日期，一种解决方案是将日期转换为字符。见下：

filt_data <- reactive({ 
    results = filter(mydf, EndDate >= input$date[1] & EndDate <= input$date[2]) 

    # To avoid displaying dates as integers in outputted table 
    results$EndDate = as.character(results$EndDate) 
    results 
    })

无法正确过滤Shiny应用程序中的日期

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