为 LaTeX 编译清理字符串的功能? [英] Function to sanitize strings for LaTeX compilation?

问题描述

虽然 xtable() 有一个 sanitize.text.function 参数，它允许清理带有特殊字符的字符串以阻止 LaTeX 编译破坏 Sweave/knitr 文档，包不会将功能导出到用户空间.

While xtable() has a sanitize.text.function argument which allows to sanitize strings with special charaters to stop LaTeX compilation from breaking in Sweave/knitr documents, the package does not export the function to the userspace.

如何在 xtable 上下文之外对 asdf_text 之类的字符串进行清理，以便将其转换为 asdf\_text 之类的内容?(如果可能的话，我更喜欢小型、独立的解决方案.)

How can I sanitize strings like asdf_text outside of the xtable context, so as to have it transformed to something like asdf\_text? (If possible I would prefer a small, self-contained solution.)

推荐答案

除非我误解了你的问题，否则我认为你忽略了 latexTranslate，它也在 Hmisc 包(并记录在与 ?latex 相同的帮助页面上):

Unless I misunderstand your question, I think you've overlooked latexTranslate, which is also in the Hmisc package (and documented on the same help page as ?latex):

‘latexTranslate’翻译字符串中的特定项目转换为 LaTeX 格式，例如，使'a^2 = a$^2$' 为上标在变量标签内.希腊字母的 LaTeX 名称(例如，如果‘greek==TRUE’，‘"alpha"’) 将添加反斜杠.数学根据需要插入模式.latexTranslate"假设输入文本总是有匹配的，例如‘[)[](]()’，以及周围的通过‘$$’就可以了.

‘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$^{2}$"

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