I'm trying to show a wordcloud2 wordcloud, but it only works in an html-knitted Rmd file. This works:
---
title: "Untitled"
output: html_document
---
```{r wordcloud}
library(wordcloud2)
wordcloud2(demoFreq)
```
But this does not:
---
title: "Untitled"
output: pdf_document
---
```{r wordcloud}
library(wordcloud2)
wordcloud2(demoFreq)
```
It will knit with always_allow_html: yes in the YAML, but the wordcloud doesn't show up:
---
title: "Untitled"
output: pdf_document
always_allow_html: yes
---
```{r wordcloud}
library(wordcloud2)
wordcloud2(demoFreq)
```
I'm thinking maybe to save the figure as an image, then load it in the .Rmd, but that seems clumsy. Better ideas?
One way to do it, as I said, is to save as an image and load it in .Rmd. Not too bad actually:
---
title: "Untitled"
output: pdf_document
---
```{r wordcloud}
library(wordcloud2)
library(webshot)
library(htmlwidgets)
my_graph <- wordcloud2(demoFreq, size = 1.5)
saveWidget(my_graph, "tmp.html", selfcontained = F)
webshot("tmp.html", "wc1.png", delay = 5, vwidth = 2000, vheight = 2000)
```
The delay argument needs to be big enough to let the html fully render; if you watch a wordcloud2 generate, it takes a few seconds. 5 seconds seems enough for this, but you may have to increase it for bigger/more complex wordclouds, or if your computer is slow.