我正在开发Shiny应用程序,我无法将在动态创建的textInput中输入的值相加。 使用的 RCode 如下:
ui <- fluidPage(
fluidRow(
column(3, offset = 3,wellPanel(textOutput("text2"))),
column(3,wellPanel(textOutput("text3"))),
column(3,wellPanel(textOutput("text4")))
)
)
server <- function(input, output, session){
observeEvent(input$view, {
output$inputGroup = renderUI({
#code for generating textBoxes and corresponding Id's dynamically
input_list <- lapply(1:(nrow(df())*3), function(i) {
inputName <- paste("id", i, sep = "")
textInputRow<-function (inputId,value)
{
textAreaInput(inputName,"", width = "200px", height = "43px", resize = "horizontal")
}
column(4,
textInputRow(inputName, "")
)
})
do.call(tagList, input_list)
})
})
#code for adding the values and displaying the sum
output$text2 <- renderText({
tot = nrow(df())*3
sum1 = 0
for(lim in 1:tot){
if(lim %% 3 == 1){
inp = paste("id",lim)
sum1 = sum1 + input[[inp]]
}
}
})
}
shinyApp(ui = ui, server = server)
任何人都可以帮我这个代码吗?
答案 0 :(得分:0)
在修改您的问题时,这是一个可重现的代码,用于汇总在文本框中输入的值:
## Only run examples in interactive R sessions
if (interactive()) {
ui <- fluidPage(
textInput("input1", "Input1", 1),
textInput("input2", "Input2", 2),
tags$h3('Result:'),
verbatimTextOutput("value")
)
server <- function(input, output) {
output$value <- renderText({ as.numeric(input$input1) + as.numeric(input$input2)})
}
shinyApp(ui, server)
}