我正在嘗試使用 R Shiny Modules 進行線性回歸。思路如下:
我嘗試了下面的代碼,但拋出了一個我無法修復的錯誤。
請幫忙。
代碼
Linear.Regression.UI <- function(id, data.tibble){
ns <- NS(id)
tagList(
actionButton(ns("ClickforRegression"), label = "Click Here to Do Regression"),
selectInput(inputId = ns("Regression.Y.Input"),
label = "Select Regression Dependent Variable",
choices = names(data.tibble),
),
selectInput(inputId = ns("Regression.X.Input"),
label = "Select Regression Independent Variables",
choices= names(data.tibble),
multiple=TRUE),
verbatimTextOutput("Linear.Model.Output.Summary")
)#end of tagList
}#end of Linear.Regression.UI
Linear.Regression.Server <- function(id){
moduleServer(id, function(input, output, session){
ns <- session$ns
observeEvent(eventExpr = input$ClickforRegression,
linear.model <- lm(reformulate(input$Regression.X.Input, input$Regression.Y.Input), data = data.tibble)
)#end of observeEvent
output$Linear.Model.Output.Summary <- renderPrint(summary(linear.model()))
})#end of moduleServer
}
Regression.App <- function(data.tibble){
ui <- fluidPage(
Linear.Regression.UI("Data", data.tibble = iris)
)
server <- function(input, output, session)
{
Linear.Regression.Server("Data")
}
shinyApp(ui, server)
}
Regression.App()
錯誤
Listening on http://127.0.0.1:3883
Warning: Error in is.data.frame: object 'data.tibble' not found
[No stack trace available]
代碼還需要ns
修復,但主要修復是將數據傳遞到服務器:
Linear.Regression.UI <- function(id, data.tibble){
ns <- NS(id)
tagList(
actionButton(ns("ClickforRegression"), label = "Click Here to Do Regression"),
selectInput(inputId = ns("Regression.Y.Input"),
label = "Select Regression Dependent Variable",
choices = names(data.tibble),
),
selectInput(inputId = ns("Regression.X.Input"),
label = "Select Regression Independent Variables",
choices= names(data.tibble),
multiple=TRUE),
verbatimTextOutput(ns("Linear.Model.Output.Summary"))
)#end of tagList
}#end of Linear.Regression.UI
Linear.Regression.Server <- function(id, data.tibble ){
moduleServer(id, function(input, output, session){
ns <- session$ns
linear.model<- reactiveVal()
observeEvent(eventExpr = input$ClickforRegression,{ message("sdf");
linear.model(lm(reformulate(input$Regression.X.Input, input$Regression.Y.Input), data = data.tibble))}
)#end of observeEvent
output$Linear.Model.Output.Summary <- renderPrint(summary(linear.model()))
})#end of moduleServer
}
Regression.App <- function(data.tibble){
ui <- fluidPage(
Linear.Regression.UI("Data", data.tibble = iris)
)
server <- function(input, output, session)
{
Linear.Regression.Server("Data", data.tibble = iris)
}
shinyApp(ui, server)
}
Regression.App()
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