從R Markdown在另一個文件位置創建PDF

Question

我試圖使用包和R中的pandoc從R Markdown（.Rmd）文檔創建PDF。我遇到的問題是我想要在另一個文件夾中創建一個PDF，並使用與.Rmd文件的文件名/文件夾不同的文件名。我正在運行MiKTeX 2.9，RStudio 0.98.1087，rmarkdown 0.3.3，pandoc 1.13.1，R 3.0.2和Windows 7-64位。輸入文件被命名爲「Cases by Measure and Site.Rmd」。我想輸出文件被命名爲<date>.pdf，並放置在以下目錄（相對於.Rmd文件）：./Output/Cases by Measure and Site/

我可以不用在同一個文件位置的問題，創建一個PDF：

library("rmarkdown") 
render(input="./R Scripts/Reports/Cases by Measure and Site.Rmd", 
     output_format="pdf_document") 

這是我在不同的位置創建一個PDF嘗試：

library("rmarkdown") 
date <- Sys.Date() 
render(input="./R Scripts/Reports/Cases by Measure and Site.Rmd", 
     output_format="pdf_document", 
     output_file=paste("./R Scripts/Reports/Output/Cases by Measure and Site/", date, ".pdf", sep="")) 

這裏是試圖使文件到新的位置，當我收到錯誤：

"C:/Program Files/RStudio/bin/pandoc/pandoc" Cases_by_Measure_and_Site.utf8.md --to latex --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash-implicit_figures --output "./R Scripts/Reports/Output/Cases by Measure and Site/2014-10-31.pdf" --template "C:\PROGRA~1\R\R-30~1.2\library\RMARKD~1\rmd\latex\default.tex" --highlight-style tango --latex-engine pdflatex --variable "geometry:margin=1in" 
pandoc.exe: Could not find image `R%20Scripts\Reports\Output\Cases%20by%20Measure%20and%20Site\2014-10-31_files/figure-latex/unnamed-chunk-2-1.pdf', skipping... 
! Missing $ inserted. 
<inserted text> 
      $ 
l.136 ...files/figure-latex/unnamed-chunk-2-1.pdf} 

pandoc.exe: Error producing PDF from TeX source 
Error: pandoc document conversion failed with error 43 
In addition: Warning message: 
running command '"C:/Program Files/RStudio/bin/pandoc/pandoc" Cases_by_Measure_and_Site.utf8.md --to latex --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash-implicit_figures --output "./R Scripts/Reports/Output/Cases by Measure and Site/2014-10-31.pdf" --template "C:\PROGRA~1\R\R-30~1.2\library\RMARKD~1\rmd\latex\default.tex" --highlight-style tango --latex-engine pdflatex --variable "geometry:margin=1in"' had status 43 

這裏是我的[R降價文件的內容：

--- 
title: "My Title" 
author: "My Name" 
date: "`r format(Sys.time(), '%B %d, %Y')`" 
output: pdf_document 
--- 

```{r} 
summary(cars) 
``` 

```{r, echo=FALSE} 
plot(cars) 
``` 

Answer 1

簡短的回答是：在目錄名稱空間。這工作：

render(input="./test.Rmd", 
     output_format="pdf_document", 
     output_file=paste("./Output/Cases.by.Measure.and.Site/", date, ".pdf", sep=""))