【发布时间】:2020-01-31 17:53:20
【问题描述】:
我正在尝试将 .csv 格式的数据框下载到特定文件夹中。但就我而言,当我点击下载按钮时,数据会下载到 C 盘的“下载”文件夹中。
library(shiny)
# Define UI for data download app ----
ui <- fluidPage(
# App title ----
titlePanel("Downloading Data"),
# Sidebar layout with input and output definitions ----
sidebarLayout(
# Sidebar panel for inputs ----
sidebarPanel(
# Input: Choose dataset ----
selectInput("dataset", "Choose a dataset:",
choices = c("rock", "pressure", "cars")),
# Button
downloadButton("downloadData", "Download")
),
# Main panel for displaying outputs ----
mainPanel(
tableOutput("table")
)
)
)
# Define server logic to display and download selected file ----
server <- function(input, output) {
# Reactive value for selected dataset ----
datasetInput <- reactive({
switch(input$dataset,
"rock" = rock,
"pressure" = pressure,
"cars" = cars)
})
# Table of selected dataset ----
output$table <- renderTable({
datasetInput()
})
# Downloadable csv of selected dataset ----
output$downloadData <- downloadHandler(
filename = function() {
paste(input$dataset, ".csv", sep = "")
},
content = function(file) {
write.csv(datasetInput(), file, row.names = FALSE)
}
)
}
# Create Shiny app ----
shinyApp(ui, server)
我也尝试了相同的情节。我使用file.copy() 将文件保存到所需位置,但它也无法正常工作。
【问题讨论】:
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这篇文章能解决你的问题吗? stackoverflow.com/questions/34865635/…