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I want to delete some lines from a .txt file

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RANJITHA H V
RANJITHA H V 2016-4-12
编辑： Azzi Abdelmalek 2016-4-12
I WANT TO REMOVE LINES WHICH CONTAINS CHARACTERS AND ALPHABETS AND I WANT TO RETAIN ONLY NUMBERS IN A TEXT DOCUMENT USING MATLAB. SOME ONE PLEASE HEP ME IN DOING SO. In the above text file, there are some lines like 'HUMAN DETECTED' 'Animal Detected'. I want to create a new file which contains only numbers and not these lines containing alphabetic messages.

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2016-4-12
line='I want to delete 123 lines from 24 .txt file 0.458 and67.45'
out=regexp(line,'\d+(\.)?\d+','match')
Azzi Abdelmalek
Azzi Abdelmalek 2016-4-12
编辑：Azzi Abdelmalek 2016-4-12
fid=fopen('12-04-16-10-01-16.txt')
M=textscan(fid,repmat('%f ',1,16))
fclose(fid)
out=cell2mat(M)

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