zigzag

PURPOSE ^

'ZIGZAG' generates a vector from a matrix using 'zigzag' ordenation

SYNOPSIS ^

function aa=zigzag(a)

DESCRIPTION ^

'ZIGZAG' generates a vector from a matrix using 'zigzag' ordenation

 USE: lin=zigzag(a);

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 
0002 %'ZIGZAG' generates a vector from a matrix using 'zigzag' ordenation
0003 %
0004 % USE: lin=zigzag(a);
0005 function aa=zigzag(a)
0006 
0007 N=size(a);
0008 N=N(1);
0009 
0010 b=fliplr(a);
0011 aa=diag(b,N-1);
0012 
0013 for i=N-2:-1:1-N,
0014 
0015     anyad=diag(b,i);
0016     if (i/2-floor(i/2))>0
0017        anyad=anyad(length(anyad):-1:1);
0018     end
0019     aa=[aa;anyad];
0020 
0021 end

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