Hello everyone,

I have a MATLAB script that reads some data from a text file and then does some calculations and writes to another file. I would like to run this script for several thousand files in the same directory that don't have very similar file names. I was wondering how  you would go about doing something like this. Is there anything in MATLAB similar to the find command in linux, which allows you to run a command for every file in a directory?

Thank you!

On Fri, 26 Mar 2010 14:55:21 -0400, Diana  <diana.qiu@yale.edu> wrote:

> Hello everyone,
>
> I have a MATLAB script that reads some data from a text file and then  
> does some calculations and writes to another file. I would like to run  
> this script for several thousand files in the same directory that don't  
> have very similar file names. I was wondering how  you would go about  
> doing something like this. Is there anything in MATLAB similar to the  
> find command in linux, which allows you to run a command for every file  
> in a directory?
>
> Thank you!

Maybe you could use ideas in:
http://www.mathworks.com/matlabcentral/fileexchange/22544-recursive-directory-walk-with-exec-unix-type

"Diana " <diana.qiu@yale.edu> wrote in message 
news:hoivup$n41$1@fred.mathworks.com...
> Hello everyone,
>
> I have a MATLAB script that reads some data from a text file and then does 
> some calculations and writes to another file. I would like to run this 
> script for several thousand files in the same directory that don't have 
> very similar file names. I was wondering how  you would go about doing 
> something like this. Is there anything in MATLAB similar to the find 
> command in linux, which allows you to run a command for every file in a 
> directory?

See question 4.12 in the newsgroup FAQ.  You will need to have some way 
either to generate a list of the files you want to process or to determine, 
given a file name, whether you want to process it.

-- 
Steve Lord
slord@mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ 

"Diana " <diana.qiu@yale.edu> wrote in message <hoivup$n41$1@fred.mathworks.com>...
> Hello everyone,
> 
> I have a MATLAB script that reads some data from a text file and then does some calculations and writes to another file. I would like to run this script for several thousand files in the same directory that don't have very similar file names. I was wondering how  you would go about doing something like this. Is there anything in MATLAB similar to the find command in linux, which allows you to run a command for every file in a directory?
> 
> Thank you!

one of the solutions

     d=dir('*');     % <- retrieve all names: file(s) and folder(s)
     d=d(~[d.isdir]);     % <- keep file name(s), only
     d={d.name}.';     % <- file name(s)
     nf=numel(d);
for  i=1:nf
     disp(sprintf('working on %5d/%5d: %s',i,nf,d{i}));
% do something, eg,
%    type(d{i});
end

us

"us " <us@neurol.unizh.ch> wrote in message <hoj0h1$3c1$1@fred.mathworks.com>...
> "Diana " <diana.qiu@yale.edu> wrote in message <hoivup$n41$1@fred.mathworks.com>...
> > Hello everyone,
> > 
> > I have a MATLAB script that reads some data from a text file and then does some calculations and writes to another file. I would like to run this script for several thousand files in the same directory that don't have very similar file names. I was wondering how  you would go about doing something like this. Is there anything in MATLAB similar to the find command in linux, which allows you to run a command for every file in a directory?
> > 
> > Thank you!
> 
> one of the solutions
> 
>      d=dir('*');     % <- retrieve all names: file(s) and folder(s)
>      d=d(~[d.isdir]);     % <- keep file name(s), only
>      d={d.name}.';     % <- file name(s)
>      nf=numel(d);
> for  i=1:nf
>      disp(sprintf('working on %5d/%5d: %s',i,nf,d{i}));
> % do something, eg,
> %    type(d{i});
> end
> 
> us

Thank you very much!