ZBa*_*auc 5 r rstudio r-markdown shiny
我似乎无法downloadButton在 rmarkdown 文档中使用runtime: shiny. 这是一个与我正在做的类似的例子。
---
title: "R Document"
runtime: shiny
---
```{r, echo = FALSE}
numericInput("SS", "Selecr SS", min = 1, max = 100, value = 1)
RandomSample <- reactive({
data.frame(X = rnorm(100), Y = rnorm(100))
})
downloadButton("download", "Download")
renderPlot({
plot(RandomSample()[(1:input$SS), "X"], RandomSample()[(1:input$SS), "Y"])
})
renderTable({
RandomSample()[(1:input$SS),]
})
```
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我想要下载按钮来下载RandomSample(),但我什至无法downloadButton显示。
我认为您正在寻找的是downloadHandler。
这是您的示例,它可以正常工作:
---
title: "R Document"
runtime: shiny
output: html_document
---
```{r, echo=FALSE}
numericInput("SS", "Selecr SS", min = 1, max = 100, value = 1)
RandomSample <- reactive({
data.frame(X = rnorm(100), Y = rnorm(100))
})
downloadHandler(filename = function() {
return(paste('Example', input$SS, '.csv', sep=''))
}, content = function(file) {
write.csv(RandomSample(), file)
})
renderPlot({
plot(RandomSample()[(1:input$SS), "X"], RandomSample()[(1:input$SS), "Y"])
})
renderTable({
RandomSample()[(1:input$SS),]
})
```
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请注意,在 RStudio 中测试时不会考虑您的文件名,但在浏览器中运行时会考虑。