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From: us on 22 Jul 2010 14:09
"Reza Zare" <persianfriend12(a)yahoo.com> wrote in message <i290o4$c6p$1(a)fred.mathworks.com>...
> Hello All,
>
> I have a text file( sample.txt) containing some numbers, I wana write all the similar number into another file and delete them from original file? pls advise me on this... my code is as follow: for this case, first, fourth and fifth line are having similar number, so I have written this three numbers into another file, how can I delete them from the sample.txt.
>
> sample.txt
> **********************
> 1880 1121-127-700-500
> 1882 1121-115-710-400
> 1891 1121-115-700-400
> 1892 1121-127-700-500
> 1893 1121-127-700-500
> ...
>
> **********************
> for i=1:12
> fid=fopen('sample.txt');
> c=textscan(fid,'%s %s');
> a=c{2}{1};
> a1=c{2}{i};
> tf=isequal(a,a1);
> if (tf==1)
> fid1=fopen('class1.txt','a+');
> fwrite(fid1, c{1}{i});
> end
> end
> fclose(fid1);
> fclose(fid);

one of the many solutions
- using your exemplary file's content...

fold='foo.txt'; % <- your file name
fnew='foo_new.txt';
clear s t;
[s,t]=textread(fold,'%d%s','delimiter','\n');
ix=ismember(t,t(1));
fp=fopen(fnew,'wt');
if fp > 0
fprintf(fp,'%d\n',s(ix));
fclose(fp);
end
type(fnew);
%{
1880
1892
1893
%}

us
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