I want to be able to preallocate multiple iterations of a matrix inside a for loop i.e. matrix(cou​nt)=zeros(​L:1), matlab keeps telling me dimensions don't match. Is there a syntax way to do this? I was thinking maybe change to an if else if.....

if true
  % code
end
 Fs=2000;
 nBits=8;
 nChannel=1;
 devID=1;
 L=4000;

   disp('press 1 for training dictionary')
   result=input(':');
   if result==1
    count=input('number of refernce files to make(max number 5): ')
    if count>5
        disp('I told you not to go higher than 5!!!')
    else
    dictionmatrix1=zeros(L:1);<---I want to preallocate based on the count
    dictionmatrix2=zeros(L:1);
    dictionmatrix3=zeros(L:1);
    dictionmatrix4=zeros(L:1);     
    dictionmatrix5=zeros(L:1);
    end

    for count=n:-1:1
    ISAC=audiorecorder(Fs,nBits,nChannel,devID);
    disp('Please makes sure to speak clearly and at the same distance from the microphone')
    disp('for all reference samples. Recording in....')
    for time=3:-1:0
       x=time
       pause(1);
       disp(x);       
    end
    disp('Start Recording');
    recordblocking(ISAC,2);
    disp('Processing');
    testarray=getaudiodata(ISAC);
    a=zeros(L:1);
    a(1:L)=testarray(1:L);
    dictionmatrix(count)=a;%<------I want to save to the preallocated matrix

end end

if true
  % code
end

Answer 1

[Sagar Damle]

If you want to create 5 vectors of the same size,instead of

count=5
  for n=count:-1:1
      dictionmatrix{n}=zeros(L:1)
  end

you can use

dictionmatrix = zeros(L,1,count)

where you can refer to matrix3 as a whole by -

dictionmatrix(:,:,3).

If you want to refer 4th element of 2nd matrix,then use -

dictionmatrix(4,1,2)

[Jack]

Thanks for the help, worked great.