问题描述
从knitr 1.12开始，具有功能include_graphics.来自?include_graphics:
As of knitr 1.12, there is the function include_graphics. From ?include_graphics:
在编织ioslides Rmarkdown演示文稿时，似乎include_graphics()处理路径中带有〜"的路径(到用户目录的快捷方式)，但是在编织word/html文档时失败.
It seems that include_graphics() handles paths with "~" in them (shortcut to user directory) when knitting an ioslides Rmarkdown presentation, but fails when knitting a word/html document.
ioslide的可复制示例(请注意，这些示例会将Rlogo.png的副本复制到您的桌面上:
Reproducible example for ioslides (note that these will make a copy of the Rlogo.png onto your desktop:
---
title: "Rlogo ioslides"
output: ioslides_presentation
---
## Images?
```{r}
require(knitr)
rlogo <- paste0(.libPaths(), "/png/img/Rlogo.png")
include_graphics(rlogo)
file.copy(from = rlogo, to = "~/Desktop")
include_graphics("~/Desktop/Rlogo.png")
```
/Applications/RStudio.app/Contents/MacOS/pandoc/pandoc + RTS -K512m -RTS rlogo.utf8.md --to html --from markdown + autolink_bare_uris + ascii_identifiers + tex_math_single_backslash --output rlogo.html-智能-电子邮件混淆无-自包含-变量转换= 0.4-模板/Library/Frameworks/R.framework/Versions/3.3/Resources/library/rmarkdown/rmd/ioslides/default.html --include-in-header/var/folders/5_/l71sk6kn29z17n011g8kld5m0000gp/T//RtmpKAAz4I/rmarkdown-str91efb7c6c16.html --mathjax --variable'mathjax-url: https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML ' 输出文件:rlogo.knit.md
/Applications/RStudio.app/Contents/MacOS/pandoc/pandoc +RTS -K512m -RTS rlogo.utf8.md --to html --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output rlogo.html --smart --email-obfuscation none --self-contained --variable transition=0.4 --template /Library/Frameworks/R.framework/Versions/3.3/Resources/library/rmarkdown/rmd/ioslides/default.html --include-in-header /var/folders/5_/l71sk6kn29z17n011g8kld5m0000gp/T//RtmpKAAz4I/rmarkdown-str91efb7c6c16.html --mathjax --variable 'mathjax-url:https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML' output file: rlogo.knit.md
/Applications/RStudio.app/Contents/MacOS/pandoc/pandoc + RTS -K512m -RTS rlogo.utf8.md-至ioslides_presentation.lua-来自markdown + autolink_bare_uris + ascii_identifiers + tex_math_single_backslash --output/var/folders/5_/l71sk6kn29z17n011g8kld5m0000gp/T//RtmpKAAz4I/ioslides-output91ef159c1e3e.html --slide-level 2
/Applications/RStudio.app/Contents/MacOS/pandoc/pandoc +RTS -K512m -RTS rlogo.utf8.md --to ioslides_presentation.lua --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output /var/folders/5_/l71sk6kn29z17n011g8kld5m0000gp/T//RtmpKAAz4I/ioslides-output91ef159c1e3e.html --slide-level 2
创建的输出:rlogo.html
Output created: rlogo.html
Word/html文档的可复制失败:
And reproducible failure for word/html document:
---
title: "Rlogo word/html"
output:
html_document: default
word_document: default
---
## Images?
```{r}
require(knitr)
rlogo <- paste0(.libPaths(), "/png/img/Rlogo.png")
include_graphics(rlogo)
file.copy(from = rlogo, to = "~/Desktop")
include_graphics("~/Desktop/Rlogo.png")
```
/Applications/RStudio.app/Contents/MacOS/pandoc/pandoc + RTS -K512m -RTS rlogo.utf8.md --to html --from markdown + autolink_bare_uris + ascii_identifiers + tex_math_single_backslash --output rlogo.html --smart --email-obfuscation none --self-contained --standalone --section-divs --template/Library/Frameworks/R.framework/Versions/3.3/Resources/library/rmarkdown/rmd/h/default.html --no-highlight --variable highlightjs = 1 --variable'theme:bootstrap'--include-in-header/var/folders/5_/l71sk6kn29z17n011g8kld5m0000gp/T//RtmpCR2Vrn/rmarkdown-str91681de2b0f3.html --mathjax --variable'mathjax-url: https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML ' 输出文件:rlogo.knit.md
/Applications/RStudio.app/Contents/MacOS/pandoc/pandoc +RTS -K512m -RTS rlogo.utf8.md --to html --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output rlogo.html --smart --email-obfuscation none --self-contained --standalone --section-divs --template /Library/Frameworks/R.framework/Versions/3.3/Resources/library/rmarkdown/rmd/h/default.html --no-highlight --variable highlightjs=1 --variable 'theme:bootstrap' --include-in-header /var/folders/5_/l71sk6kn29z17n011g8kld5m0000gp/T//RtmpCR2Vrn/rmarkdown-str91681de2b0f3.html --mathjax --variable 'mathjax-url:https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML' output file: rlogo.knit.md
pandoc:无法获取〜/Desktop/Rlogo.png〜/Desktop/Rlogo.png: openBinaryFile:不存在(没有这样的文件或目录)错误: pandoc文档转换失败，错误67，执行暂停
pandoc: Could not fetch ~/Desktop/Rlogo.png ~/Desktop/Rlogo.png: openBinaryFile: does not exist (No such file or directory) Error: pandoc document conversion failed with error 67 Execution halted
我正在使用MacOS Sierra.
I'm using MacOS Sierra.
为什么在一种情况下失败，而在另一种情况下失败?
Why is this failing in one case but not the other?
推荐答案
如果您使用path.expand('~/path')，应该可以.问题是~的分辨率.一些函数为您调用path.expand-其他函数可能需要您自己执行.如果事物是相对设置的，则可以选择相对路径或相对路径.我更喜欢相对路径方法，因为它在R和github等上都能很好地工作.
Should work if you use path.expand('~/path') instead, I would expect. The problem is the resolution of the ~. Some functions call path.expand for you - others might require you to do it yourself. That or relative paths are an option if things are set up relatively. I prefer the relative path approach because it works nicely in R and with github, etc.
根据@yihui的响应-normalizePath是另一个可以保持的工具记住.
Per @yihui's response - normalizePath is another tool to keep in mind.
在您的示例中:
...
include_graphics(path.expand("~/Desktop/Rlogo.png"))
...
这篇关于当路径包含“〜"时，R Markdown编织失败.适用于html/pdf文档，但适用于ioslides的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！