用knitr设置HTML元素 [英] Setting HTML meta elements with knitr
问题描述
我使用knitr生成HTML报告，并且希望包含作者和生成日期元标记。
我的Rhtml页面看起来像这样。 / p>
< html>
< head>
< meta name =authorcontent =<！ - rinline Sys.getenv（'USERNAME'） - >>
< meta name =datecontent =<！ - rinline as.character（Sys.time（）） - >>
< / head>
< body>
< / body>
< / html>
不幸的是，在I knit（test.Rhtml），knitr生成的HTML是
< meta name =authorcontent =< code class =knitr inline> RCotton< / code>>
< meta name =datecontent =< code class =knitr inline> 2013-01-02 14：38：16< / code>>
这是无效的HTML。我真正想要生成的内容类似于
< meta name =authorcontent =RCotton>
< meta name =datecontent =2013-01-02 14:38:16>
我可以生成没有得到代码的R代码标签包装它？或者是否有另一种方式来指定标签属性（如这些内容属性）？
到目前为止，我最不想要的计划是用 readLines / str_replace / writeLines ，但这看起来相当糟糕。
另一种方法是在内联代码中添加 I（）不需要< code> 标记就可以打印字符，例如
< HTML>
< head>
< meta name =authorcontent =<！ - rinline I（Sys.getenv（'USERNAME'）） - >>
< meta name =datecontent =<！ - rinline I（as.character（Sys.time（））） - >>
< / head>
< body>
< / body>
< / html>
I'm generating HTML reports using knitr, and I'd like to include author and generation date meta tags.
My Rhtml page looks something like this.
<html>
<head>
<meta name="author" content="<!--rinline Sys.getenv('USERNAME') -->">
<meta name="date" content="<!--rinline as.character(Sys.time()) -->">
</head>
<body>
</body>
</html>
Unfortunately, after I knit("test.Rhtml"), the HTML that knitr generates is
<meta name="author" content="<code class="knitr inline">RCotton</code>">
<meta name="date" content="<code class="knitr inline">2013-01-02 14:38:16</code>">
which isn't valid HTML. What I'd really like to generate is something like
<meta name="author" content="RCotton">
<meta name="date" content="2013-01-02 14:38:16">
Can I generate R code that doesn't get a code tag wrapping it? Or is there another way to specify tag attributes (like these content attributes)?
So far my least-worst plan is to manually fix the content with readLines/str_replace/writeLines, but this seems rather kludgy.
Another (undocumented) approach is to add I() around your inline code to print the characters as is without the <code> tag, e.g.
<html>
<head>
<meta name="author" content="<!--rinline I(Sys.getenv('USERNAME')) -->">
<meta name="date" content="<!--rinline I(as.character(Sys.time())) -->">
</head>
<body>
</body>
</html>
这篇关于用knitr设置HTML元素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IT屋！
