extract numbers from cell array

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alex
alex 2014-5-10
评论： Sebastian Lopez 2023-4-19
hello!
i have this cell array wich may have many cells,and not only three as here.
A = {'jdldi'; 'jdks5.4555h'; 'f67'}
i want to extract only the numbers,and show them as one number
for this example i want the result to be 5.455567
any help please?
Thank you very much!
  2 个评论
alex
alex 2014-5-10
in the first cell:no numbers
in the second cell:5.4555
in the third cell:67
so,i want to merge all the numbers from every cell and take the number 5.455567

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2014-5-10
A = {'jdldi'; 'jdks5.4555h'; 'f67'}
b=regexp(A,'\d+(\.)?(\d+)?','match')
out=str2double([b{:}])
  3 个评论
显示 1更早的评论
Azzi Abdelmalek
Azzi Abdelmalek 2014-5-10
编辑：Azzi Abdelmalek 2014-5-10
A = {'jdldi'; 'jdks5.4555h'; 'f67'}
b=regexp(A,'\d+(\.)?(\d+)?','match')
out=strjoin([b{:}],'')
alex
alex 2014-5-10
thank you very much Azzi! have a nice day!

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更多回答（2 个）

Andrei Bobrov
Andrei Bobrov 2014-5-10
A1 = regexp(A,'[\d*\.]*\d*','match')
A2 = [A1{:}]
out = str2double(strcat(A2{:}))
Jan
Jan 2014-5-10
编辑：Jan 2014-5-18
A simple version:
A = {'jdldi'; 'jdks5.4555h'; 'f67'}
S = cat(2, A{:});
S(isletter(S)) = [];
The simpler the code, the less chances to insert a bug.

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