我將錯誤顯示爲「警告:grep中的錯誤:無效」模式「參數」和「錯誤[:不正確的維數」 ),同時執行閃亮的代碼。請幫忙。下面是代碼片段。當我不評論最後一行時,出現錯誤[:不正確的維數(在執行Shiny R代碼的時候)中的錯誤
library(MASS)
library(shinythemes)
library(shiny)
library(ggplot2)
mass.tmp <- data(package = "MASS")[3]
mass.datasets <- as.vector(mass.tmp$results[,3])
ui <- fluidPage(
theme = shinytheme("superhero"),
titlePanel("Linear Regression Modelling"),
sidebarLayout(
sidebarPanel(
selectInput("dsname", "Dataset:",choices = c(mass.datasets)),
uiOutput("y_axis"),
uiOutput("x_axis")
) ,
mainPanel(
tags$br(),
tags$br(),
"R-squared:",
tags$span(tags$b(textOutput("rsquared")),style="color:blue")
)
)
)
server <- function(input, output) {
output$x_axis <- renderUI({
col_opts <- get(input$dsname)
selectInput("x_axis2", "Independent Variable:", choices = c(names(col_opts)))
})
cols2 <- reactive({
col_opts2 <- get(input$dsname)
#names(col_opts2)[!grepl(input$x_axis2, names(col_opts2))]
})
output$y_axis <- renderUI({
selectInput("y_axis2", "Dependent Variable:", choices = c(names(cols2())))
})
model <- reactive({
#lm(input$dsname[,names(input$dsname) %in% input$y_axis2] ~ input$dsname[,names(input$dsname) %in% input$x_axis2])
#tmp <- paste(input$y_axis2,"~",input$x_axis2,sep = " ")
lm(input$y_axis2 ~ input$x_axis2 , data = input$dsname)
})
model_summary <- reactive({summary(model())})
output$rsquared <- renderText({ model_summary()$r.squared })
}
shinyApp(ui = ui, server = server)
請提供完全可重複的例子。 – BigDataScientist
我已編輯我的帖子。請指導。 –