我有一个Shiny应用程序没有给出任何错误,但显然我的conditionalPanel无法正常工作。当我选择输入时,一些图表会更新,而有些图表则不会更新。例如,如果我选择星期并将条件更改为0或1,则图表会更新,但如果我选择rel,则图表会更新1但不会更新4(如果我在Shiny应用程序之外执行此操作,则适用于所有情况)。这是代码的样子: UI.R
shinyUI(pageWithSidebar(
headerPanel(' '),
sidebarPanel(
selectInput('zcol', 'Variable to be fixed', names(taxi[,-c(1,4,5,7,8,9,10,11)])),
conditionalPanel(condition = "input.zcol == 'week'",
selectInput("levels", "Levels",c(0,1)
)),
conditionalPanel(condition = "input.zcol == 'tollfree'",
selectInput("levels", "Levels",c(0,1)
)),
conditionalPanel(condition = "input.zcol == 'rel'",
selectInput("levels", "Levels",c(1,4)
)),
conditionalPanel(condition = "input.zcol == 'source'",
selectInput("levels", "Levels",c(1,2)
)),
conditionalPanel(condition = "input.zcol == 'hour'",
selectInput("levels", "Levels",c(seq(0,23))
))
),
mainPanel(
plotOutput('plot1'),
plotOutput('plot2')
)
))
Server.R
shinyServer(function(input, output, session) {
simiData <- reactive({
eval(substitute(taxi %>% group_by(simi.mean,col) %>% summarise(mean = mean(prop.conv)) %>%
filter(col==input$levels) %>% select(simi.mean,mean),
list(col=as.symbol(input$zcol))))
})
distData <- reactive({
eval(substitute(taxi %>% group_by(dist.mean,col) %>% summarise(mean = mean(prop.conv)) %>%
filter(col==input$levels) %>% select(dist.mean,mean),
list(col=as.symbol(input$zcol))))
})
output$plot1 <- renderPlot({
plot(simiData(),xlim=c(0,max(simiData()$simi.mean)),ylim=c(0,max(simiData()$mean)))
})
output$plot2 <- renderPlot({
plot(distData())
})
})
有什么建议吗? 谢谢!
答案 0 :(得分:1)
您不能拥有多个具有相同inputId(“级别”)的selectInput。每个人都需要一个唯一的inputId。
答案 1 :(得分:1)
您可以使用updateSelectInput(session,"levels",choices = newValue))
来拥有一个并使用input$levels
更新选项,而不是多个选择输入。每次input$zcol
更改时,您都可以使用观察者更改taxi <- data.frame(week=sample(1:10),hour=sample(1:10))
runApp(list(
ui = shinyUI(
fluidPage(
sidebarLayout(
sidebarPanel(
selectInput("zcol", 'Variable to be fixed', names(taxi)),
selectInput("levels", "Levels",1:5)
),
mainPanel(
plotOutput('plot1')
)
)
)
),
server = function(input, output, session) {
output$plot1 <- renderPlot({
plot(taxi[1:input$levels,])
})
observe({
if ( input$zcol == 'week') {
updateSelectInput(session, "levels", choices = 1:5)
} else if(input$zcol == 'hour') {
updateSelectInput(session, "levels", choices = 6:10)
}
})
}
))
的选项。 / p>
以下是如何使用观察者
更新选择输入的基本示例// Input assuming you've sanitised it
string myInputString = "720000.00";
// Remove the decimals
myInputString = myInputString.Substring(0, myInputString.IndexOf("."));
// The count
int count = 0;
// Loop through and count occurrences
foreach (char c in myInputString)
{
if (c == "0")
{
count++;
}
}