问题
I would like to put ggplots into a list and then later print each one in the list. That should be done with rmarkdown and knitr in RStudio. MWE (of course, in real, the list gets filled somewhere else than printed):
---
title: "nice title"
author: "Me"
date: 12\. Januar 2016
output:
pdf_document:
fig_caption: yes
fig_width: 7
keep_tex: yes
number_sections: yes
toc: yes
html_document: default
---
Here is my plot:
```{r, echo=F}
library(ggplot2)
printGGlist <- function(gglist){
for(gg in gglist){
print(gg)
}
}
g1 <- ggplot(diamonds, aes(carat, cut)) + geom_point()
g2 <- ggplot(diamonds, aes(carat, cut)) + geom_density()
gg <- list(g1, g2)
printGGlist(gg)
```
more text
The LaTeX code I get is however
\includegraphics{MyProject_files/figure-latex/unnamed-chunk-7-1.pdf}!
\href{MyProject_files/figure-latex/unnamed-chunk-7-2.pdf}{}!
\href{MyProject_files/figure-latex/unnamed-chunk-7-3.pdf}{}!
Of course the result is not pretty. What happended here?
回答1:
This is a bug recently introduced in knitr 1.12, and I have fixed it in the development version (>= 1.12.2): https://github.com/yihui/knitr#installation
来源：https://stackoverflow.com/questions/34768660/printing-ggplots-out-of-list-does-not-work-in-knitr-with-rmarkdown