Creating an array of vectors

Question

0 个投票

Hello everyone. I have a list of 3d vectors representing positions in space and need to generate an array (A) with the following form.

In 2d: X=[X0 X1 X2 ... Xn] Y=[Y0 Y1 Y2 ... Yn]

A=[X0 Y0; X0 Y1; X0 Y2; X1 Y0; X1 Y1; X1 Y2; X2 Y0; X2 Y1; X2 Y2; ... ; Xn Yn]

As mentioned, I'll actually need it in 3d. I provided the 2d example for simplicity.

Thank you for your help!!

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Walter Roberson 2018-7-1

Is every X to be used with every Y, or is it only adjacent coordinates? Like *2 linked to *1, *2, *3 but not *0 ?

B Rogers 2018-7-1

Every X is paired with every Y.

Answer 1

Walter Roberson 2018-7-1

0 个投票

For the case of every point linked to every other point:

[T1, T2, T3] = ndgrid(X, Y, Z);
A = [T1(:), T2(:), T3(:)];

B Rogers 2018-7-1

I knew there must be a way easier than how I was trying to do it. This works perfectly. Thank You Walter.