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From: Rebecca on 5 May 2008 16:33
I'm having a similar issue that I was hoping this code
would solve but I can't seem to figure it out.
You wrote:

> >> A=23;
> >> fprintf('%03d\n', A)
> 023


I need the number produced to be used to name files
automatically as I collect data. I want files to be named
filename01,filename02,filename03...filename23. I can get
the filenames but they come out like this:
filename1,filename2...filename23. Which causes problems
when I try to later index 'which' iteration the file was
(say I need to label things on a graph I get e1 instead of
01 (actually I get 81 because I'm using a date at the end
of the filename but this isn't really important)

This code doesn't seem to allow me to use the output in a
filename (it comes out just filename with no #). If I use
str2double I get NaN.

Can you help me too?
From: Rebecca on 5 May 2008 16:37
I'm having a similar issue that I was hoping this code
would solve but I can't seem to figure it out.
You wrote:

> >> A=23;
> >> fprintf('%03d\n', A)
> 023


I need the number produced to be used to name files
automatically as I collect data. I want files to be named
filename01,filename02,filename03...filename23. I can get
the filenames but they come out like this:
filename1,filename2...filename23. Which causes problems
when I try to later index 'which' iteration the file was
(say I need to label things on a graph I get e1 instead of
01 (actually I get 81 because I'm using a date at the end
of the filename but this isn't really important)

This code doesn't seem to allow me to use the output in a
filename (it comes out just filename with no #). If I use
str2double I get NaN.

Can you help me too?
From: Walter Roberson on 5 May 2008 16:46
In article <fvnqtv$jnt$1(a)fred.mathworks.com>,
Rebecca <rjones(a)gc.cuny.removeme.edu> wrote:

>I need the number produced to be used to name files
>automatically as I collect data. I want files to be named
>filename01,filename02,filename03...filename23.

for K=1:23
fid = num2str(K,'filename%02d.mat'); %create the name
save(fid, 'fid', 'K'); %use the file somehow
end
--
So you found your solution
What will be your last contribution?
-- Supertramp (Fool's Overture)
From: someone on 5 May 2008 16:49
"Rebecca " <rjones(a)gc.cuny.removeme.edu> wrote in message
<fvnr5f$3tm$1(a)fred.mathworks.com>...
> I'm having a similar issue that I was hoping this code
> would solve but I can't seem to figure it out.
> You wrote:
>
> > >> A=23;
> > >> fprintf('%03d\n', A)
> > 023
>
>
> I need the number produced to be used to name files
> automatically as I collect data. I want files to be
named
> filename01,filename02,filename03...filename23. I can get
> the filenames but they come out like this:
> filename1,filename2...filename23. Which causes problems
> when I try to later index 'which' iteration the file was
> (say I need to label things on a graph I get e1 instead
of
> 01 (actually I get 81 because I'm using a date at the end
> of the filename but this isn't really important)
>
> This code doesn't seem to allow me to use the output in a
> filename (it comes out just filename with no #). If I use
> str2double I get NaN.
>
> Can you help me too?

See Q 4.12 in the MATLAB FAQ at:

http://matlabwiki.mathworks.com/MATLAB_FAQ

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