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Special characters in regexp

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Prasanna Srisailan
Prasanna Srisailan 2013-3-28
I have a large CSV data file which I process by: [num txt] = xlsread('file.csv') Some variables (in string format) stored in 'txt' have spaces and special characters; which I clear using 'regexprep'. But some of the variables have the 'caret - ^' character which cannot be replaced by this way.
Because of which I cannot designate these as variables and assign them the data.
Is there an alternate way of doing this?

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Azzi Abdelmalek
Azzi Abdelmalek 2013-3-28
You can precede ^ with \
Example
str='abcd^ef';
new_str=regexprep(s,'\^','')

更多回答（1 个）

Walter Roberson
Walter Roberson 2013-3-28
Use \^ to represent literal ^ . See also http://www.mathworks.com/help/matlab/ref/regexptranslate.html
But better yet is to code your expression so that it replaces everything other than specific characters.
regexprep( txt, '[^a-z0-9_]', '' ) %if you want to delete them
If you are looking to turn strings into variable names, you can use http://www.mathworks.com/help/matlab/ref/genvarname.html
But if you are planning to use them as variable names, them please read http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

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