r - 为 LaTeX 编译清理字符串的函数？

Question

虽然 xtable()有一个 sanitize.text.function允许使用特殊字符清理字符串以阻止 LaTeX 编译破坏 Sweave/knitr 文档的参数，该包不会将该函数导出到用户空间。

我如何清理像 asdf_text 这样的字符串外xtable上下文，以便将其转换为类似 asdf\_text 的内容? (如果可能的话，我更喜欢一个小的、独立的解决方案。)

Answer 1

除非我误解了您的问题，否则我认为您忽略了 latexTranslate ，这也在 Hmisc 中包(并记录在与 ?latex 相同的帮助页面上):

‘latexTranslate’ translates particular items in character strings to LaTeX format, e.g., makes ‘a^2 = a\$^2\$’ for superscript within variable labels. LaTeX names of greek letters (e.g., ‘"alpha"’) will have backslashes added if ‘greek==TRUE’. Math mode is inserted as needed. ‘latexTranslate’ assumes that input text always has matches, e.g. ‘[) [] (] ()’, and that surrounding by ‘\$\$’ is OK.

library("Hmisc")
latexTranslate("asdf_text")
## [1] "asdf\\_text"
latexTranslate("a^2")
## [1] "a$^{2}$"