简言之，我希望能够生成一个动态的Rmarkdown报告文件(pdf或html)从我的shiny 的应用与按钮点击.为此，我想我将使用参数化的报表.但不知何故，我无法将单个谜题转移到预期目标:
有了这段代码，我们可以在R Shinny中生成并下载一个react 式雷达艺术:
library(shiny)
library(radarchart)
js <- paste0(c(
"$(document).ready(function(){",
" $('#downloadPlot').on('click', function(){",
" var el = document.getElementById('plot1');",
" // Clone the chart to add a background color.",
" var cloneCanvas = document.createElement('canvas');",
" cloneCanvas.width = el.width;",
" cloneCanvas.height = el.height;",
" var ctx = cloneCanvas.getContext('2d');",
" ctx.fillStyle = '#FFFFFF';",
" ctx.fillRect(0, 0, el.width, el.height);",
" ctx.drawImage(el, 0, 0);",
" // Download.",
" const a = document.createElement('a');",
" document.body.append(a);",
" a.download = 'radarchart.png';",
" a.href = cloneCanvas.toDataURL('image/png');",
" a.click();",
" a.remove();",
" cloneCanvas.remove();",
" });",
"});"
), collapse = "\n")
ui <- pageWithSidebar(
headerPanel('Radarchart Shiny Example'),
sidebarPanel(
checkboxGroupInput('selectedPeople', 'Who to include',
names(radarchart::skills)[-1], selected="Rich"),
actionButton('downloadPlot', 'Download Plot'),
downloadButton('report', 'Generate Report')
),
mainPanel(
tags$head(tags$script(HTML(js))),
chartJSRadarOutput("plot1", width = "450", height = "300"), width = 7
)
)
server <- function(input, output) {
output$plot1 <- renderChartJSRadar({
chartJSRadar(skills[, c("Label", input$selectedPeople)],
maxScale = 10, showToolTipLabel=TRUE)
})
}
shinyApp(ui, server)
What I would like to do is to implement: Generating downloadable reports 100
此网站的代码如下所示:
应用程序.R
shinyApp(
ui = fluidPage(
sliderInput("slider", "Slider", 1, 100, 50),
downloadButton("report", "Generate report")
),
server = function(input, output) {
output$report <- downloadHandler(
# For PDF output, change this to "report.pdf"
filename = "report.html",
content = function(file) {
# Copy the report file to a temporary directory before processing it, in
# case we don't have write permissions to the current working dir (which
# can happen when deployed).
tempReport <- file.path(tempdir(), "汇报Rmd")
file.copy("汇报Rmd", tempReport, overwrite = TRUE)
# Set up parameters to pass to Rmd document
params <- list(n = input$slider)
# Knit the document, passing in the `params` list, and eval it in a
# child of the global environment (this isolates the code in the document
# from the code in this app).
rmarkdown::render(tempReport, output_file = file,
params = params,
envir = new.env(parent = globalenv())
)
}
)
}
)
汇报Rmd
---
title: "Dynamic report"
output: html_document
params:
n: NA
---
```{r}
# The `params` object is available in the document.
params$n
```
A plot of `params$n` random points.
```{r}
plot(rnorm(params$n), rnorm(params$n))
```
我在这里try 了很多:
How to pass table and plot in Shiny app as parameters to R Markdown?
Shiny: pass a plot variable to Rmarkdown document when generating a downloadable report
但对我来说，无法将我的代码转换为上面提供的示例代码！单击"生成报告"按钮后，所需的输出如下:
