Question

程序的这一部分需要两个输入：1）用户和2）选择的日期范围会影响所显示的绘图输出。现在，显示的绘图输出仅为空白。我的控制台中没有列出任何错误。

我的csv文件的“日期”列的格式为：03/14/12。

感谢您的帮助或观察。

library(shinydashboard)
library(shiny)
library(ggplot2)
library(gridExtra)
library(dplyr)
library(tidyverse)
library(lubridate)

ui <- dashboardPage(
  dashboardHeader(title = "T"),
  dashboardSidebar(),
  dashboardBody(

fluidRow(

  box(
    title = "Controls",
    selectInput("User",
                "User:",
                c("All",
                  unique(as.character(df$User))))

  ), 
  box(
    dateRangeInput("dates", 
                   "Date range",
                   start = "01-01-2018",
                   end = "06-25-2018")
  ),

  mainPanel(

    tabsetPanel(type = "tabs",
                tabPanel("Plot", plotOutput("plot")

          )
        )          
      )
    )
  )
)
  server <- function(input, output){
    df <- read.csv(file = "c:/T/T/T.csv", header = TRUE, sep = ",")
      df$Date <- as.Date(df$Date)


      begin<- reactive({input$dates[1]})
      finish<- reactive({input$dates[2]})

  output$plot <- renderPlot({
    df.filtered <- df %>% 
    filter(df$User == input$User) %>%
    filter(Date >= begin(), Date <= finish())
    req(df.filtered) 

    df.filtered %>% 
    ggplot(aes(DfM, SvM, colour = User)) +
    geom_point(show.legend = FALSE) +
    directlabels::geom_dl(aes(label = User), method = "smart.grid")

    shinyApp(ui, server)

dateRangeInput不影响绘图

0 个答案: