我正在尝试使用线性回归构建一个简单的闪亮应用程序,允许用户选择lm()函数中使用的独立变量和因变量,并最终绘制出几个图表。我目前坚持将输入传递给服务器端的lm()函数,并且能够打印出回归的摘要。任何人都可以帮助我解决我的逻辑/代码出错的问题。以下是代码
library(shiny)
library(data.table)
RegData <- as.data.table(read.table("/home/r2uphp/ShinyApps/IRViews/RegData.tsv", header = TRUE, stringsAsFactors = FALSE))
ui <- fluidPage(
headerPanel("Regression and Time Series Analysis"),
sidebarPanel(
p("Select the inputs for the Dependent Variable"),
selectInput(inputId = "DepVar", label = "Dependent Variables", multiple = FALSE, choices = list("AvgIR", "YYYYMM", "SumCount", "AvgLTV", "AvgGFEE", "AvgRTC", "Date")),
p("Select the inputs for the Independent Variable"),
selectInput(inputId = "IndVar", label = "Independent Variables", multiple = FALSE, choices = list( "SumCount", "AvgIR", "YYYYMM", "AvgLTV", "AvgGFEE", "AvgRTC", "Date"))
),
mainPanel(
verbatimTextOutput(outputId = "RegSum"),
verbatimTextOutput(outputId = "IndPrint"),
verbatimTextOutput(outputId = "DepPrint")
#plotOutput("hist")
)
)
server <- function(input, output) {
lm1 <- reactive({lm(paste0(input$DepVar) ~ paste0(input$IndVar), data = RegData)})
output$DepPrint <- renderPrint({input$DepVar})
output$IndPrint <- renderPrint({input$IndVar})
output$RegSum <- renderPrint({summary(lm1())})
}
shinyApp(ui = ui, server = server)
This is the result of the shinyapp
以下是我正在使用的示例数据集:
YYYYMM AvgIR SumCount AvgLTV AvgGFEE AvgRTC Date
1: 2015-10 0.04106781 180029 0.7531805 0.002424778 319.6837 2015-10-01
2: 2015-11 0.04036154 160061 0.7380383 0.002722529 312.6314 2015-11-01
3: 2015-12 0.04001407 145560 0.7392874 0.002425912 313.0351 2015-12-01
4: 2016-01 0.04034078 147693 0.7396932 0.002600640 315.0238 2016-01-01
5: 2016-02 0.04055688 142545 0.7345160 0.002449523 310.3950 2016-02-01
提前致谢!
答案 0 :(得分:8)
您只需要正确构建公式。我不确定你的想法是什么paste0
,但这里有更好的方法
lm1 <- reactive({lm(reformulate(input$IndVar, input$DepVar), data = RegData)})
reformulate()
命令将为您构建正确的公式(请注意,自变量在函数中排在第一位。