R粘贴功能错误 [英] R paste function error
本文介绍了R粘贴功能错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我试图产生这个输出字符串
I trying to produce this output character string
CONTAINS(ORIG_DOC,'SECTIONS("7 - 既往医疗/手术史")(DM"的精确形式，DM2"的精确形式，糖尿病")') <>0
使用如下粘贴功能
paste("CONTAINS(ORIG_DOC,'SECTIONS("7 - Past Medical/Surgical History")(PRECISE FORM OF "DM", PRECISE FORM OF "DM2", "diabetes")') <> 0")
我收到一个错误
Error: unexpected numeric constant in "paste("CONTAINS(ORIG_DOC,'SECTIONS("7"
不确定我在这里遗漏了什么，非常感谢任何帮助.
Not sure what I am missing here, any help is much appreciated.
推荐答案
将所有双引号 " 转义为 \" 并使用 noquote:
Escape all double-quotes " as \" and use noquote:
> txt = noquote(paste("CONTAINS(ORIG_DOC,'SECTIONS(\"7 - Past Medical/Surgical History\") (PRECISE FORM OF \"DM\", PRECISE FORM OF \"DM2\", \"diabetes\")') <> 0"))
> txt
[1] CONTAINS(ORIG_DOC,'SECTIONS("7 - Past Medical/Surgical History") (PRECISE FORM OF "DM", PRECISE FORM OF "DM2", "diabetes")') <> 0
>
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