Expand Elements in a Table/Matrix

Sorry i re-post, I was not able to find an answer for this.

Let's say I have a matrix A, where the 1st row and column would be indexes.

A =

     0     1     2     3
    10     5     6     9
    20     5    23     6
    30     3     4     7

How would I expand it to all the combination of row x column values with out using loops. Like bellow:

A_Elements=

     1    10     5
     1    20     5
     1    30     3
     2    10     6
     2    20    23
     2    30     4
     3    10     9

[Walter Roberson]

What determines how often each item should be repeated?

[Walter Roberson]

Should that have continued with

3 20 9

3 30 7

?

[Carlos C]

The answer A_Elements is what the answer needs to be. Essentially think of the values in row 1 to be "x" values and column 1 to be the "y" values and the values in the middle to be z(x,y)

Answer 1

[Andrei Bobrov]

my variant

[j i] = meshgrid(A(1,2:end),A(2:end,1));
A_Elements2 = [j(:) i(:) reshape(A(2:end,2:end),[],1)]

[Carlos C]

Thanks for the reply, this worked

Answer 2

[Walter Roberson]

[reshape(repmat(A(1,2:end),size(A,1)-1,1),[],1), repmat(A(2:end,1),size(A-1)-1,1), reshape(A(2:end,2:end),[],1)]

[Carlos C]

I get this error when running this script:

"??? Error using ==> horzcat

CAT arguments dimensions are not consistent."