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将参数传递给R中的函数

networkd3 shiny r

1

Poppin · 技术社区 · 7 年前

我试图将简单网络的节点值作为参数传递给Shining R中的函数。但是,我遇到了以下错误:

有人能帮助解决这个问题吗?谢谢

library(shiny)
library(networkD3)
ui <- shinyUI(fluidPage(
fluidRow(
    column(4, simpleNetworkOutput("simple")),
    column(4, DT::dataTableOutput("table"))
)
))

server <- shinyServer(function(input, output, session) { 
  session$onSessionEnded(stopApp)
  output$simple <- renderSimpleNetwork({
  sn<-simpleNetwork(df)
  sn$x$options$clickAction = 'Shiny.onInputChange("id",d.name)'
  sn
})

 output$table <- DT::renderDataTable(DT::datatable(get(funct(input$id))))

})

shinyApp(ui = ui, server = server)

1 回复 | 直到 7 年前

1

0

CJ Yetman 7 年前

取出 deparse 和 substitute sprintf 命令,并在要在生成的SQL语句中匹配的值周围添加单引号
摆脱 get 函数,因为您不想“获取”对象

例如

library(shiny)
library(networkD3)
library(DT)
library(sqldf)

df <- read.csv(header = T, text = '
source,name,age,hair
dad,Jon X,18,brown
dad,Jon Y,22,blonde
')

funct <-
  function (n) {
    isp <- sprintf("Select df.age From df Where df.name='%s';", n)
    isd <- sqldf::sqldf(isp)
    return(isd)
  }

ui <- shinyUI(fluidPage(
  fluidRow(
    column(4, simpleNetworkOutput("simple")),
    column(4, DT::dataTableOutput("table"))
  )
))

server <- shinyServer(function(input, output, session) { 
  session$onSessionEnded(stopApp)
  output$simple <- renderSimpleNetwork({
    sn<-simpleNetwork(df)
    sn$x$options$clickAction = 'Shiny.onInputChange("id",d.name)'
    sn
  })

  output$table <- DT::renderDataTable(DT::datatable(funct(input$id)))
})

shinyApp(ui = ui, server = server)

library(shiny)
library(networkD3)

df <- read.csv(header = T, text = '
source,name,age,hair
dad,Jon X,18,brown
dad,Jon Y,22,blonde
')

ui <- shinyUI(fluidPage(
  fluidRow(
    column(4, simpleNetworkOutput("simple")),
    column(4, textOutput("text"))
  )
))

server <- shinyServer(function(input, output, session) { 
  session$onSessionEnded(stopApp)
  output$simple <- renderSimpleNetwork({
    sn <- simpleNetwork(df)
    sn$x$options$clickAction <- 'Shiny.onInputChange("id", d.name)'
    sn
  })

  output$text <- renderPrint({ df$age[df$name == input$id] })
})

shinyApp(ui = ui, server = server)