i had converted image into blocks. I converted blocks to linear array. Next i calculated mean values for first 8 arrays. now i want to convert mean values to linear array again. please send suitable code. please don't ignore it. thank u very much.

for i=1:4:16
    for j=1:4:16
        block=I(i:i+3,j:j+3);
        %convert 4X4 into 16X1 column vector
        tv(:,col)=reshape(block,16,1);
        col=col+1;
        count=count+1;
        column=column+4;
    end
    row=row+4;
end
%find mean of 8 arrays
nn=8; 
for count=1:16
    sum1=sum1+tv(:,count);
    if count==nn*nnn
        mean(:,r)=sum1/8;
        sum1=0;
        nnn=nnn+1;
        r=r+1;
    end
end