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[英]How to download a ggplotly plot with R Shiny downloadHandler?
[英]GGPlotly: downloadHandler giving empty plot
我在plotly
上有些困难。 我希望能够下载plotly
为PDF格式。 但是,在向我的代码中添加一些x和y轴参数(因为如果我将ggplot
转移到plotly
, plotly
x和y轴的标题切除)
此代码正在下载pdf文件:
library(shiny)
library(DT)
library(ggplot2)
library(plotly)
shinyApp(
ui = fluidPage(
fluidRow(downloadButton('downloadplot',label='Download Plot')),
plotlyOutput('plot1')
),
server = function(input, output) {
testplot <- function(){
a <- ggplot(mtcars, aes(x = interaction(cyl, carb, lex.order = T), y = mpg,fill = interaction(cyl, carb, lex.order = T))) +
geom_boxplot()
}
output$plot1 <- renderPlotly({testplot()})
output$downloadplot <- downloadHandler(
filename ="plot.pdf",
content = function(file) {
pdf(file, width=12, height=6.3)
print(testplot())
dev.off()
})})
并且添加以下代码来修复ggplotly
的标题失败:
a <- ggplot(mtcars, aes(x = interaction(cyl, carb, lex.order = T), y = mpg,fill = interaction(cyl, carb, lex.order = T))) +
geom_boxplot()
p <- ggplotly(a + ylab(" ") + xlab(" "))
x <- list(
title = "[x]"
)
y <- list(
title = "[y]"
)
p %>% layout(xaxis = x, yaxis = y)}
给出一个空的情节...
谢谢你的帮助!
我已经解决了我的问题。 解决方案不是很好,但是可以!
所以诀窍是在renderPlotly
设置x和y标题,而在testplot()
函数中不设置。
但是,必须在testplot()
函数中另外键入x和y轴标题-因为这将作为我们的pdf输出,并且使用plotly
进行图的查看。
这是代码:
library(shiny)
library(DT)
library(ggplot2)
library(plotly)
shinyApp(
ui = fluidPage(
fluidRow(downloadButton('downloadplot',label='Download Plot')),
plotlyOutput('plot1')
),
server = function(input, output) {
testplot <- function(){
a <- ggplot(mtcars, aes(x = interaction(cyl, carb, lex.order = T), y = mpg,fill = interaction(cyl, carb, lex.order = T))) +
geom_boxplot()
}
output$plot1 <- renderPlotly({
p <- ggplotly(testplot() + ylab(" ") + xlab(" "))
x <- list(
title = "[x]"
)
y <- list(
title = "[y]"
)
p %>% layout(xaxis = x, yaxis = y)})
output$downloadplot <- downloadHandler(
filename ="plot.pdf",
content = function(file) {
pdf(file, width=12, height=6.3)
print(testplot())
dev.off()
})})
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