如何在 R 中将高图保存为 PNG 图像？

Question

How to export a highchart (type = 'organization') to PNG image in R?

Here is an example:

library(highcharter)
library(tidyverse)

highchart() %>%
  hc_chart(type = 'organization') %>%
  hc_add_series(
    data = list(
      list(from = 'A', to = 'A1'),
      list(from = 'A', to = 'A2')
    )) 

I tried as follows, but the exported file is empty:

library(highcharter)
library(tidyverse)

png("org.png")

highchart() %>%
  hc_chart(type = 'organization') %>%
  hc_add_series(
    data = list(
      list(from = 'A', to = 'A1'),
      list(from = 'A', to = 'A2')
    ))

dev.off()

Answer 1

You can use the package webshot to achieve that. Read more about on Export highchart widget as figure in R .

EDIT : The answer worked for the OP using webshot2 , which is meant to replace webshot.

library(highcharter)
library(tidyverse)
library(webshot)


org <- highchart() %>%
  hc_chart(type = 'organization') %>%
  hc_add_series(
    data = list(
      list(from = 'A', to = 'A1'),
      list(from = 'A', to = 'A2')
    ))

htmlwidgets::saveWidget(widget = org, file = "org.html")
getwd()
webshot(url = "org.html", 
        file = "org.png",
        delay=3) # delay will ensure that the whole plot appears in the image
dev.off()