MATLAB: I have 10 feature v ectors, each containing 4 values and i need to store each vector in a matrix using loop and later want to create a .mat file but stucked at loop.. how do i do

the .mat file contains last value only

clc;
clear all;
close all;
for i=1:9
    j=num2str(i);
    k=strcat(j,'.jpg');    
    I1=imread(k);
    subplot(4,4,i+1);
    imshow(I1);
    [cA,cH,cV,cD] = dwt2(I1,'db1');
    [cA1,cH1,cV1,cD1] = dwt2(cA,'db1');
    [cA2,cH2,cV2,cD2] = dwt2(cA1,'db1');
    [cA3,cH3,cV3,cD3] = dwt2(cA2,'db1');
    mc1=mean(mean(cA));
    mc2=mean(mean(cA1));
    mc3=mean(mean(cA2));
    mc4=mean(mean(cA3));
    vectorcA=[mc1 mc2 mc3 mc4 ];
    n=size(vectorcA)
    m=zeros(9,n);
    m(:,:)= vectorcA
    save demo.mat m
  end

Best Answer

If you have 10 feature vectors, why does your loop only go up to 9? Try this:
m = zeros(10, n);
for i = 1 : 10
    % Other code.
    % Store 1-by-4 feature vector into row i of m:
    m(i, :)= vectorcA;
end
save('demo.mat', 'm');
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