尝试将单选按钮值传递给服务器时出现类错误

我简化了我的示例，下面是我正在使用的代码。我试图将用户从一组单选按钮中选择的值传递给总分。我的代码工作正常，但现在我收到以下错误：尝试将单选按钮值传递给服务器时出现类错误

Warning: Error in as.character: cannot coerce type 'closure' to vector of type 'character'

Stack trace (innermost first): 1: runApp

Error : cannot coerce type 'closure' to vector of type 'character'

这听起来像这是一个语法问题，但我画一个空白试图弄清楚这一点。

UI.R

ui <- fluidPage(

    #title header 
    titlePanel("This is My Form"), 

    fluidRow(
    column(6, 
      h3("BUTTON"), 
      radioButtons("Button1","My First Button", choices = c("Yes" = "y","No" = "n","N/a" = "na"), selected = "na", inline = T), 
      br(), 
      h3("BUTTON 2 AND 3"), 
      radioButtons("Button2","My Second Button", choices = c("Yes" = "y","No" = "n","N/a" = "na"), selected = "na", inline = T), 
      br(), 
      radioButtons("Button3","My Third Button", 
         choices = c("Yes" = "y","No" = "n","N/a" = "na"), selected = "na", inline = T), 
      br(), 
      br() 
    ), 
    column(6, 
      h3("BUTTON 4"), 
      radioButtons("Button4","My Fourth Button", 
         choices = c("Yes" = "y","No" = "n","N/a" = "na"), selected = "na", inline = T) 
    ) 
), 
    actionButton(inputId = "Submit", label = "Calculate"), 
    (br), 
    mainPanel(
    h1(textOutput('totals'), align = "center") 
) 
)

SERVER.R

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

    button1 <- reactive({ ifelse(input$Button1 == "y", 50, ifelse(input$Button1 == "n", 25, 0)) }) 
    button2 <- reactive({ ifelse(input$Button2 == "y", 50, ifelse(input$Button2 == "n", 25, 0)) }) 
    button3 <- reactive({ ifelse(input$Button3 == "y", 50, ifelse(input$Button3 == "n", 25, 0)) }) 
    button4 <- reactive({ ifelse(input$Button4 == "y", 50, ifelse(input$Button4 == "n", 25, 0)) }) 

    output$totals <- renderText({ 

    if (input$Submit == 0) 
     return(NULL) 
    isolate({ 

     total <- as.numeric(Button1())+as.numeric(Button2())+as.numeric(Button3())+as.numeric(Button4()) 

     if (is.na(total)){ 
     print("Make Selections and Click Submit") 
     } else 
     print(total) 

    }) 
    }) 
}

GLOBAL.R

library(shiny) 
library(rsconnect)

来源

2017-05-30 mtr2021

事实上，你在你的UI一个错字，(br) - >br()

actionButton(inputId = "Submit", label = "Calculate"), 
    (br), 
    mainPanel(
    h1(textOutput('totals'), align = "center") 
)

应该

actionButton(inputId = "Submit", label = "Calculate"), 
    br(), 
    mainPanel(
    h1(textOutput('totals'), align = "center") 
)

来源

2017-05-30 21:14:54

再就是像'Button1的其他问题（）'而不是'按钮1（）'但这地址问题的特定错误消息。 – MrFlick

尝试将单选按钮值传递给服务器时出现类错误

回答

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