R 如何从下拉列表将图像上载到Shiny应用程序
我正试图将图片上传到我闪亮的应用程序中,但似乎还停留在一个基本步骤上。这些图像在我的www目录中。我能够实现一个下拉选项,并希望用户选择一个图像,例如,mouse.png,将上传说的图像。但是,图像本身没有上载 这是我的代码,有人有什么想法吗R 如何从下拉列表将图像上载到Shiny应用程序,r,shiny,R,Shiny,我正试图将图片上传到我闪亮的应用程序中,但似乎还停留在一个基本步骤上。这些图像在我的www目录中。我能够实现一个下拉选项,并希望用户选择一个图像,例如,mouse.png,将上传说的图像。但是,图像本身没有上载 这是我的代码,有人有什么想法吗 library(shiny) #create a box function my.box <- function(title, obj) { box( title = title, status = "primary
library(shiny)
#create a box function
my.box <- function(title, obj) {
box(
title = title,
status = "primary",
solidHeader = TRUE,
collapsible = TRUE,
plotOutput(obj, height = "300px")
)
}
# List of choices for selectInput
mylist <- list.files("~/APP/www/")
body <- dashboardBody(tableOutput("filtered_table"),
my.box("Table1", "Table1"))
#create dropbox
ui <- fluidPage(
#drop down box
selectInput(inputId ="gene",label = h3("Select an image from below"),choices = mylist),
#name of the plot.
mainPanel(plotOutput("image")) #NOT SURE WHAT TO PLACE HERE
)
#server function
server = shinyServer(function(input, output,session){
observeEvent(input$myFile, {
inFile <- input$myFile
if (is.null(inFile))
return()
file.copy(inFile$datapath, file.path("~/APP/www/", inFile$name) )
})
})
按照中的示例,可以使用renderImage/imageOutput。请注意,我已经稍微调整了文件路径
library(shiny)
library(shinydashboard)
#create a box function
my.box <- function(title, obj) {
box(
title = title,
status = "primary",
solidHeader = TRUE,
collapsible = TRUE,
plotOutput(obj, height = "300px")
)
}
# List of choices for selectInput
mylist <- list.files("./www")
body <- dashboardBody(tableOutput("filtered_table"),
my.box("Table1", "Table1"))
#create dropbox
ui <- fluidPage(
#drop down box
selectInput(inputId ="gene",label = h3("Select an image from below"),choices = mylist),
#name of the plot.
mainPanel(imageOutput("image"))
)
#server function
server = shinyServer(function(input, output,session){
output$image <- renderImage({
filename <- normalizePath(file.path('www',
input$gene))
list(src = filename)
}, deleteFile = FALSE)
})
shinyApp(ui, server)
按照中的示例,可以使用renderImage/imageOutput。请注意,我已经稍微调整了文件路径
library(shiny)
library(shinydashboard)
#create a box function
my.box <- function(title, obj) {
box(
title = title,
status = "primary",
solidHeader = TRUE,
collapsible = TRUE,
plotOutput(obj, height = "300px")
)
}
# List of choices for selectInput
mylist <- list.files("./www")
body <- dashboardBody(tableOutput("filtered_table"),
my.box("Table1", "Table1"))
#create dropbox
ui <- fluidPage(
#drop down box
selectInput(inputId ="gene",label = h3("Select an image from below"),choices = mylist),
#name of the plot.
mainPanel(imageOutput("image"))
)
#server function
server = shinyServer(function(input, output,session){
output$image <- renderImage({
filename <- normalizePath(file.path('www',
input$gene))
list(src = filename)
}, deleteFile = FALSE)
})
shinyApp(ui, server)
非常感谢你,我明白我做错了什么。非常感谢。非常感谢你,我明白我做错了什么。非常感谢。