嵌入到 PDF rmarkdown 中

Question

我的ggplot餅圖中有一個重疊標簽的原始問題，因此建議我改用plotly 。 這解決了我的標簽重疊問題，但現在我需要找到一種方法將plotly嵌入到我的 PDF 文檔中。

使用我之前的ggplot ，我可以去 ' print(piechart, floating = FALSE)但它沒有與plotly 。

---
title: "Untitled"
author: "Morg"
date: "August 20, 2019"
output: pdf_document
---

```{r setup, include=FALSE}
library(dplyr)
library(plotly)

#
rptyear <- 2018
colours <- c("A" = "royalblue3", "B" = "red", "C" = "gold", "D" = "green4")

# data
premiumtable <- data.frame(Var1 = rep(c("A","B","C","D"),11),
                           Var2 = c(rep(2009,4),rep(2010,4),rep(2011,4),rep(2012,4),rep(2013,4),rep(2014,4),rep(2015, 4),rep(2016,4), rep(2017,4),rep(2018,4),rep(2019,4)),
                           Freq = as.numeric(c(13223284, 3379574,721217, 2272843,14946074,4274769, 753797,2655032, 15997384, 4952687, 722556,3035566,16244348,5541543,887109,3299966,15841630,6303443,1101696,3751892,14993295, 6993626,1312650,4158196,13946038, 7081457,1317428,4711389, 12800640, 6923012, 1345159, 4911780, 12314663, 6449919, 1395973,5004046,12612704,6968110,1507382,5745079,15311213,8958588,1849069,6819488)))

# prepare plot data
currentPrem <-   
  premiumtable %>% 
  filter(Var2 == rptyear, Freq != 0) %>% 
  mutate(Freq = as.numeric(Freq))

# create plot labels
labels = paste0(currentPrem$Var1, "\n $",prettyNum(round(as.numeric(currentPrem$Freq)/1000), big.mark = ","))

# create plot
piechart <- plot_ly(currentPrem,
        labels = ~labels,
        values = ~Freq, type = 'pie',
        textposition = 'outside',
        textinfo = 'label',
        colors = colours) %>%
  layout(title = paste("YTD Numbers:", rptyear),
         xaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE),
         yaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE),
         showlegend = FALSE)

```

有人告訴我：“如果你想要輸出為 PDF，你可以使用export()寫入磁盤（png、pdf 等），然后knitr::include_graphics()或者你可以使用包webshot 。我'如果您需要更多詳細信息，請將此作為一個新問題提出。”

我想我更喜歡使用webshot 。 我不希望每次運行此報告時都保存 40 個 png 文件。 （我的報告在循環中）

沒有錯誤消息，當我嘗試打印或在塊中輸入“ piechart ”時它只顯示空白

我試過了：

export('piechart', 'piechart.png', 'png')
knitr::include_graphics("piechart.png")

我收到這個錯誤：

PhantomJS not found. You can install it with webshot::install_phantomjs(). If it is installed, please make sure the phantomjs executable can be found via the PATH variable.

Answer 1

您應該考慮嘗試使用 webshot2 而不是使用webshot 。 請參閱我對類似案例的詳細回答。

整個工作代碼

---
  title: "Untitled"
author: "Morg"
date: "August 20, 2019"
output: pdf_document
---

  ```{r setup, include=FALSE}
library(dplyr)
library(plotly)

#
rptyear <- 2018
colours <- c("A" = "royalblue3", "B" = "red", "C" = "gold", "D" = "green4")

# data
premiumtable <- data.frame(Var1 = rep(c("A","B","C","D"),11),
                           Var2 = c(rep(2009,4),rep(2010,4),rep(2011,4),rep(2012,4),rep(2013,4),rep(2014,4),rep(2015, 4),rep(2016,4), rep(2017,4),rep(2018,4),rep(2019,4)),
                           Freq = as.numeric(c(13223284, 3379574,721217, 2272843,14946074,4274769, 753797,2655032, 15997384, 4952687, 722556,3035566,16244348,5541543,887109,3299966,15841630,6303443,1101696,3751892,14993295, 6993626,1312650,4158196,13946038, 7081457,1317428,4711389, 12800640, 6923012, 1345159, 4911780, 12314663, 6449919, 1395973,5004046,12612704,6968110,1507382,5745079,15311213,8958588,1849069,6819488)))

# prepare plot data
currentPrem <-   
  premiumtable %>% 
  filter(Var2 == rptyear, Freq != 0) %>% 
  mutate(Freq = as.numeric(Freq))

# create plot labels
labels = paste0(currentPrem$Var1, "\n $",prettyNum(round(as.numeric(currentPrem$Freq)/1000), big.mark = ","))

# create plot
piechart <- plot_ly(currentPrem,
                    labels = ~labels,
                    values = ~Freq, type = 'pie',
                    textposition = 'outside',
                    textinfo = 'label',
                    colors = colours) %>%
  layout(title = paste("YTD Numbers:", rptyear),
         xaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE),
         yaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE),
         showlegend = FALSE)

htmlwidgets::saveWidget(widget = piechart, file = "hc.html")
webshot(url = "hc.html", file = "hc.png", delay = 1, zoom = 4, vheight = 500)

```

輸出