i have two martices

X =

    1.0000    1.2000    1.4000    1.6000    1.8000    2.0000
    1.0000    1.2000    1.4000    1.6000    1.8000    2.0000
    1.0000    1.2000    1.4000    1.6000    1.8000    2.0000
    1.0000    1.2000    1.4000    1.6000    1.8000    2.0000
    1.0000    1.2000    1.4000    1.6000    1.8000    2.0000
    1.0000    1.2000    1.4000    1.6000    1.8000    2.0000 
and Y= 

    1.0000    1.0000    1.0000    1.0000    1.0000    1.0000
    1.2000    1.2000    1.2000    1.2000    1.2000    1.2000
    1.4000    1.4000    1.4000    1.4000    1.4000    1.4000
    1.6000    1.6000    1.6000    1.6000    1.6000    1.6000
    1.8000    1.8000    1.8000    1.8000    1.8000    1.8000
    2.0000    2.0000    2.0000    2.0000    2.0000    2.0000
 and i need an n*2 matrix by pairing up corresponding elements of each of the matrices x and y. the 
ex [ 1 1; 1.2 1; 1.4 1; 1.6 1; 1.8 1; 2 1; 1 1.2; 1.2 1.2;...............] and so on

Answer 1

[Stephan]

x = [1 2; 3 4]
y = [5 6; 7 8]
z = [x(:) y(:)]

[Bhavana Chinnabalannagari]

For bigger matrices, it gives away only the diagonal elements

[Stephan]

No, see this example:

x = reshape(1:25,5,5)
y = reshape(26:50,5,5)
z = [x(:) y(:)]

result:

x =

       1     6    11    16    21
       2     7    12    17    22
       3     8    13    18    23
       4     9    14    19    24
       5    10    15    20    25

y =

      26    31    36    41    46
      27    32    37    42    47
      28    33    38    43    48
      29    34    39    44    49
      30    35    40    45    50

z =

       1    26
       2    27
       3    28
       4    29
       5    30
       6    31
       7    32
       8    33
       9    34
      10    35
      11    36
      12    37
      13    38
      14    39
      15    40
      16    41
      17    42
      18    43
      19    44
      20    45
      21    46
      22    47
      23    48
      24    49
      25    50

Diagonal values would be 5 pairs - this are 25 pairs of values. I think this is what you expected - isnt it?

[Bhavana Chinnabalannagari]

yeah , your right.