清空筛选条件
清空筛选条件

Reuse parts of the matching expression as replace string

4 次查看（过去 30 天）
Léon
Léon 2013-11-7
编辑： Adam Danz 2020-8-29
Hello,
I stuck in the usage of the regexprep() function and hope sb. can point me to the correct solution.
myarray = {'ABC 500mm';'DEF 3mm';'GHI 0.1mm'};
output = cellfun(@(myarray) regexprep(myarray,'\d*+mm','${regexp($0,''\d*'',''match'')}'),myarray, 'UniformOutput',false);
This 'solution' sadly produces an error as it states that the replacement string does not output a real string to use here. What I try to do is pretty simple - erase all occurrences of 'mm' when found after a number.
Many thanks!

请先登录，再回答此问题。

采纳的回答

Sean de Wolski
Sean de Wolski 2013-11-7
编辑：Sean de Wolski 2013-11-7
myarray = {'ABC 500mm';'DEF 3mm';'GHI 0.1mm';'3mmm'};
regexprep(myarray,'(\d)mm','$1')
Explained:
capture a token () for any digit \d followed by mm. Replace whole expression with the token (i.e. the digit).
Also the regexp* family of functions can work on cellstr arrays :)
  2 个评论
Adam Danz
Adam Danz 2020-8-29
编辑：Adam Danz 2020-8-29
Nice explanation, Sean de Wolski!
Regular expressions are one of those things that you could use for years and learn something new every time you put one together.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Characters and Strings 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by