我很难弄清楚如何在.Rmd文件中使用if语句。我在stackoverflow上找不到任何东西......
我要解释这个闪亮的应用程序的例子:
library(shiny)
library(markdown)
library(knitr)
server <- function(input, output) {
output$downloadReport <- downloadHandler(
filename = function() {
paste('my-report', sep = '.', switch(
input$format, PDF = 'pdf', HTML = 'html', Word = 'docx'
))
},
content = function(file) {
src <- normalizePath('report.Rmd')
owd <- setwd(tempdir())
on.exit(setwd(owd))
file.copy(src, 'report.Rmd', overwrite = TRUE)
out <- rmarkdown::render('report.Rmd',
params = list(text = input$text),
switch(input$format,
PDF = pdf_document(),
HTML = html_document(),
Word = word_document()
))
file.rename(out, file)
}
)
}
ui <- fluidPage(
tags$textarea(id="text", rows=20, cols=155,
placeholder="Some placeholder text"),
tabPanel("Data",
radioButtons('filter', h3(strong("Auswahlkriterien:")),
choices = list("WerkstoffNr" = 1,
"S-Gehalt" = 2),
selected = 1,inline=TRUE),
conditionalPanel(
condition = "input.filter == '1'",
column(6,
h4("WerkstoffNr auswaehlen:"),
selectInput("select", " ",
choices = seq(1,100,10))),
column(6,
h4("Abmessung auswaehlen:"),
selectInput("abmfrom", "Von:",choices=as.list(seq(20,110,10))),
selectInput("abmto", "Bis:",choices=as.list(seq(20,110,10))),
actionButton("button1", "Auswaehlen"))),
conditionalPanel(
condition = "input.filter == '2' ",
column(6,h4("S-Gehalt auswaehlen:"),
selectInput("sgehalt", "Von:",choices=seq(1,100,10)),
selectInput("sgehalt2", "Bis:",choices=seq(1,100,10))),
column(6,h4("Abmessung auswaehlen:"),
selectInput("abmfrom2", "Von:",choices=as.list(seq(20,110,10))),
selectInput("abmto2", "Bis:",choices=as.list(seq(20,110,10)))))
),
flowLayout(radioButtons('format', 'Document format', c('PDF','HTML', 'Word'),
inline = TRUE),
downloadButton('downloadReport'))
)
shinyApp(ui = ui, server = server)
report.Rmd(就在此刻):
---
title: "Parameterized Report for Shiny"
output: html_document
params:
text: 'NULL'
---
# Some title
`r params[["text"]]`
我想在我的RMarkdown报告中获得这部分闪亮应用的输入:
tabPanel("Data",
radioButtons('filter', h3(strong("Auswahlkriterien:")),
choices = list("WerkstoffNr" = 1,
"S-Gehalt" = 2),
selected = 1,inline=TRUE),
conditionalPanel(
condition = "input.filter == '1'",
column(6,
h4("WerkstoffNr auswaehlen:"),
selectInput("select", " ",
choices = seq(1,100,10))),
column(6,
h4("Abmessung auswaehlen:"),
selectInput("abmfrom", "Von:",choices=as.list(seq(20,110,10))),
selectInput("abmto", "Bis:",choices=as.list(seq(20,110,10))),
actionButton("button1", "Auswaehlen"))),
conditionalPanel(
condition = "input.filter == '2' ",
column(6,h4("S-Gehalt auswaehlen:"),
selectInput("sgehalt", "Von:",choices=seq(1,100,10)),
selectInput("sgehalt2", "Bis:",choices=seq(1,100,10))),
column(6,h4("Abmessung auswaehlen:"),
selectInput("abmfrom2", "Von:",choices=as.list(seq(20,110,10))),
selectInput("abmto2", "Bis:",choices=as.list(seq(20,110,10)))))
)
我们可以看到里面有一个If语句(关于过滤选项)。因此,它取决于用户希望用于过滤数据的选项。我想在我的报告中有这个选项。简单地说就像:
if input.filter == 1
Werkstoffnummer: input$select
Abmessung: von input$abmfrom bis input$abmto
else
S : von sgehalt bis sgehalt2
Abmessung: von input$abmfrom2 bis input$abmto2
因此在报告中只会打印(如果input.filter == 1):
Werkstoffnummer:1
Abmessung:von 20 bis 30
非常感谢!
答案 0 :(得分:1)
可能我不完全理解你,但你可以使用类似的东西 (示例在输入过滤器上打印不同的文本)
---
title: "Untitled"
runtime: shiny
output: html_document
---
```{r eruptions, echo=FALSE}
radioButtons('filter', h3(strong("Auswahlkriterien:")),
choices = list("WerkstoffNr" = 1,
"S-Gehalt" = 2),
selected = 1,inline=TRUE)
conditionalPanel(
condition = "input.filter == '1'",
column(6,
h4("WerkstoffNr auswaehlen:")
))
conditionalPanel(
condition = "input.filter == '2' ",
column(6,h4("S-Gehalt auswaehlen:")))
```
或使用服务器端(渲染UI,如here)
但你不能像静态html文件那样分享它:
*“注意:如果您熟悉R Markdown,您可能希望RStudio在工作目录中保存交互式文档的HTML版本。但是,这仅适用于静态HTML文档。每个交互式文档必须由管理文档的计算机。因此,交互式文档不能作为独立的HTML文件共享。“
如果你想下载静态html 例子
---
title: "Untitled"
output: html_document
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
```{r ,echo=FALSE}
if(input$filter==1){
h1(paste("1",input$ii))
}else{
h1(paste("2",input$ii))
}
```
library(shiny)
ui=shinyUI(fluidPage(
radioButtons('filter', h3(strong("Auswahlkriterien:")),
choices = list("WerkstoffNr" = 1,
"S-Gehalt" = 2),
selected = 1,inline=TRUE),
numericInput("ii","1",0),
downloadButton('downloadReport')
))
server=shinyServer(function(input, output) {
output$downloadReport <- downloadHandler(
filename = function() {
paste('my-report', sep = '.', 'html' )
},
content = function(file) {
src <- normalizePath('report.Rmd')
# temporarily switch to the temp dir, in case you do not have write
# permission to the current working directory
owd <- setwd(tempdir())
on.exit(setwd(owd))
file.copy(src, 'report.Rmd')
library(rmarkdown)
out <- render('report.Rmd', html_document())
file.rename(out, file)
}
)
})
shinyApp(ui,server )
报告将包含1或2个单选按钮和ii输入
答案 1 :(得分:0)
听起来你想要的是一个模板来生成报告。 R Markdown是一种用于漂亮打印报告的格式,而不是生成它们。
对于报告生成,有‹brew›。它允许您使用简单的模板语言生成任何文件(包括R Markdown)。在您的情况下,您可以执行以下操作:
<% if (input.filter == 1) { %>
… normal R Markdown code here!
<% } %>
将其另存为report.rmd.brew
或类似内容;然后,在报告生成代码中,在呈现模板之前需要brew
模板:
brew::brew('report.rmd.brew', 'report.rmd')
默认情况下,它会从当前环境中找到变量(可以配置)。