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R:gsub保留字符串中字符之间的空格而不会删除

[英]R: gsub keep the space between characters in a string without removing

我有一个字符串,它们之间有数字字符。

TestString = "white tiger roars.12.03.001-fast horse runs13.15.01.001-cat is useless 11.01.09.001-dog barks22.07.01.001"

我不要看起来像

"white tiger roars-fast horse runs-cat is useless-dog barks"

到目前为止,我的方法无法保留单词之间的空格。

gsub("[^a-z-]", "", TestString) 
#"whitetigerroars-fasthorseruns-catisuseless-dogbarks"
gsub("\\s?(\\d+|\\.)","","white tiger roars.12.03.001-fast horse runs13.15.01.001-cat is useless 11.01.09.001-dog barks22.07.01.001")
[1] "white tiger roars-fast horse runs-cat is useless-dog barks"

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