Find string with options (*)

Question

Horace Lai 2013-5-30

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Hi,

I have a cell of strings that I want to see if any of them match a certain string pattern. The string pattern can be something like 'Object(1)=' or Object(123)='. So basically 'Object(*)=' where the asterisk represents a number. Is there a function in Matlab that has a feature that can search strings like that?

Horace

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Answer 1

José-Luis 2013-5-30

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编辑：José-Luis 2013-5-30

在 MATLAB Online 中打开

expr = 'Object\([0-9]*\)='; %Regular expression  
bla = 'asad ca Object(0)= asdas Object(k)=asdObject(1999)='; %string to search  
your_idx = regexp(bla,expr); %Returns starting index of matches

Note that you can also get the index of the ending of the matches, the matched strings themselves, etc... For more details please look at:

doc regexp

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Horace Lai 2013-5-30

Thanks. Just what I was looking for

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Answer 2

Azzi Abdelmalek 2013-5-30

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https://ww2.mathworks.cn/matlabcentral/answers/77434-find-string-with-options#answer_87081

编辑：Azzi Abdelmalek 2013-5-30

在 MATLAB Online 中打开

s='123 sdd5 Object(1)= 25 333sss'
idx=strfind(s,'Object(1)=')

%or

k=123
pattern=sprintf('Object(%d)=',k)
s='123 sdd5 Object(123)= 25 333sss'
idx=strfind(s,pattern)

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Horace Lai 2013-5-30

Hi, thanks for the response. But it wasn't really what I was looking for. I am looking for a solution where you do not know the number before hand. In your first example you knew the number was 1 and in the second you knew hte number was 123.