I want to make a function with save option.

I have the following code in my script (this code looks for the file in directory and save with filename#, numbering sequentially).

 %To save several files with same name and numbering each file
 mylist=dir('file*.dat');%see in the current folder if the file with same name exists
 number=length(mylist);%number of files with name 'file'
 filename=sprintf('file_%d.dat',number+1);%name the file with number
 save(filename,'LP','-ascii')%save the file in .dat format

I want to make this a function so that I can use it in several places by just calling the function. I did like following, but not working!

 function [ output_args ] = saveseq( filename, variable )
  mylist=dir('filename*.dat');%see in the current folder if the file with same name exists
  number=length(mylist);%number of files with name 'filename'
  filename=sprintf('filename_%d.dat',number+1);%name the file with number
  save(filename,'variable','-ascii')%save the file in .dat format
 end

it is saying 'name' and 'variable' are unused!.. how can I feed 'filename' and 'variable' into the code so that it can be used as a function?

Answer 1

[Mahdi]

The problem is in the way you're handling the variables. Basically, the inputs to your function in this case are taken as variables, but you're never using the variables inside the function (because of the way you've defined it), basically:

To call the function, use

savesq('name1', 'variable1')

then, inside the function, use

string1=sprintf('_%d.dat', number+1)
filename1=strcat(filename,string1)
save(filename1, variable, '-ascii')

[aneps]

Yes it works thank you... But there is another problem that this time inside the function

 mylist=dir('name1*.dat')

is not doing the job! it is not really finding the files with name* (files with name and ending with numbers) in the directory!

[aneps]

Oh.... thank you... I solved it... I just modified as follows

 name='Test_1s';
 findfile=strcat(name,'*.dat');
 mylist=dir(findfile);

Then as normally as you have suggested

 number=length(mylist);
 string1=sprintf('_%d.dat', number+1)
 filename1=strcat(filename,string1)
 save(filename1, variable, '-ascii')

This works very well.... thank you again... I think I am improving each day :D

[Mahdi]

No problem :)