How to search and replace a text from a character vector?

Question

Kazi Alam 2021-7-8

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/874503-how-to-search-and-replace-a-text-from-a-character-vector

评论： Kazi Alam 2021-7-8

采纳的回答： Bhavya Chopra

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Hallo, Thanks for reading,

I have a character array (1x22222) read from a text file. Using the character vector I would like

to serach for the following line within the array: ( ' * ' here is represented as random text part)

'(:PAR :N CORNERS :DIM (4 2) :V #2A(*)'

After that I would like to replace the text with following line:

'(:PAR :N CORNERS :DIM (4 2) :V #2A((0.0 4.0) (2.5 4.0) (2.5 0.0) (0.0 0.0))'

I have the following lines of code but it cannot find the intended text

f = regexprep(character_array,'(:PAR :N CORNERS :DIM (4 2) :V #2A(*)'],...
'(:PAR :N CORNERS :DIM (4 2) :V #2A((0.0 4.0) (2.5 4.0) (2.5 0.0) (0.0 0.0))');

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Answer 1

Bhavya Chopra 2021-7-8

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https://ww2.mathworks.cn/matlabcentral/answers/874503-how-to-search-and-replace-a-text-from-a-character-vector#answer_742438

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Please note that ‘(‘ is a special character. For replacing the described lines with the intended text, please replace the expression (second argument of the regexprep function) with:

'\(:PAR :N CORNERS :DIM \(4 2\) :V #2A\(.*?\)'

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Kazi Alam 2021-7-8

@Bhavya Chopra thank you very much. A follow-up question, if you are interested.

I have similar lines with varying number as you can see in photo below ( numbered the lines). If I want to change the numbers on individual lines what would be the procedure. Right now with wildcard only the first line can be changed.