modify the code to accept jpegs of various sizes

function out=load_database();
  % We load the database the first time we run the program.
  persistent loaded;
  persistent w;
  if(isempty(loaded))
      v=zeros(10304,400);
      for i=1:40
          cd(strcat('s',num2str(i)));
          for j=1:10
              a=imread(strcat(num2str(j),'.pgm'));
              v(:,(i-1)*10+j)=reshape(a,size(a,1)*size(a,2),1);
          end
          cd ..
      end
      w=uint8(v); % Convert to unsigned 8 bit numbers to save memory. 
  end
  loaded=1;  % Set 'loaded' to aviod loading the database again. 
  out=w;
sir i want to modify this code in order to make it accept jpeg images of various sizes rather than only accepting pgm images of 11kb...

the error i m facing is..

Error in ==> load_database at 14 v(:,(i)*6+j)=reshape(a,size(a,1)*size(a,2),1);

please help..i do not knw much of matlab...

Answer 1

[Walter Roberson]

v(:,(i-1)*10+j)=a(:);

[pooja]

i am getting error

??? Subscripted assignment dimension mismatch.

Error in ==> load_database at 15 v(:,(i)*6+j)=a(:);