writing a file

pathname ='D:\dataset\' ;
 dirlist = dir( [pathname '*.jpg'] );
 pickind='jpg';
for x = 1:length(dirlist)

I = imread([pathname, dirlist(x).name]);
I=imresize(I,[256 256]);
size(I)
m = mean(I(:));
I1=double(I);
V = var(double(I(:)));
J = stdfilt(I); 
SD =  std(double(I(:)));

result=[m V SD];
final_col2{k}=result;
end
save('new','final_col2');

please tell how to write a function file for this and call it in a main file

[TAB]

final_col2{k}=result

k = ?

[kash]

sorry Tabrez it is x

final_col2{x}=result

[Titus Edelhofer]

Hi Kash,

this is more or less the same question as

http://www.mathworks.com/matlabcentral/answers/25354-error-in-writing-function-file

Perhaps we continue the discussion there ...

Titus

[kash]

titus no one answered there also,cau u explain here plz

[Walter Roberson]

Please do not start new questions just because no one has answered a previous question. You can post reminders, and you can edit questions to reflect current situations.

Answer 1

[TAB]

Here there is one input in the code which is pathname and your final output is final_col2. So you can make a function as

function FinalOut = MyFunc(InputPath)
   pathname = InputPath;
   dirlist = dir( [pathname '*.jpg'] );
   ...
   ...
   ...
   ...
   final_col2{k}=result;
   end
   save('new','final_col2');

     FinalOut = final_col2;
  end

Also 'final_col2' should be initialized before starting the loop for efficiency purpose.

final_col2=cell(length(dirlist),1)

[kash]

Thanks Tabrez,but how to call this in main file

[TAB]

Hope, your 'main file' is another matlab function or script.

You can call above function as

RetData=MyFunc('D:\dataset\');

If you are not aware of Matlab functions, please see

http://www.mathworks.com/help/techdoc/matlab_prog/f7-38085.html