如何在R-studio中编织希腊符号以生成pdf

Question

我正在与R studio markdown和knitr合作，这些都很棒。

我似乎无法将希腊符号编织成pdf。

相同的Rmd文件：

---
title: "Untitled"
author: "Hugo Koopmans"
date: "11-01-2015"
output: pdf_document
---


Test Greek symbol
----------------

P-value
In statistics, the p-value is a function of the observed sample results (a statistic) that is used for testing a statistical hypothesis. Before performing the test a threshold value is chosen, called the significance level of the test, traditionally 5% or 1% [1] and denoted as α. If the p-value is equal or smaller than the significance level (\alpha)

现在我正在使用linx mint 17 texlive 2013 Rstudio版本0.98.1062

结果：

  |.................................................................| 100%
  ordinary text without R code


/usr/lib/rstudio/bin/pandoc/pandoc Preview-25df24aa1731.utf8.md --to latex --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash-implicit_figures --output Preview-25df24aa1731.pdf --template /home/hugo/R/x86_64-pc-linux-gnu-library/3.0/rmarkdown/rmd/latex/default.tex --highlight-style tango --latex-engine pdflatex --variable 'geometry:margin=1in' 


processing file: Preview-25df24aa1731.Rmd
output file: Preview-25df24aa1731.knit.md

! Package inputenc Error: Unicode char \u8:α not set up for use with LaTeX.

See the inputenc package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              

l.73 denoted as α

Try running pandoc with --latex-engine=xelatex.
pandoc: Error producing PDF from TeX source
Error: pandoc document conversion failed with error 43
Execution halted

结果是pandoc抱怨alpha符号。所以产生的胶乳似乎无法处理这个符号......

我想让R studio正确处理这个问题，而无需手动更改tex文件...理想情况下......

任何提示？

雨果

Answer 1

对于Rmarkdown中的希腊符号，您可以使用由$ ... $表示的内联公式，即两个$符号。

试试这个：

If the p-value is equal or smaller than the significance level $\alpha$