Convert array initialization code

I am trying to convert some sample Matlab code I found to another language for implementing in some custom software. I do not have Matlab and am brand new to its syntax. Can anyone help translate what kind of an array/matrix the below is creating?

v = [x y z]
[row col] = size(v);
v2 = [zeros(row, 1) v]

It seems like it would be creating a 2D array with the first row being all zeros and the second being the vector v; however, I don't know if that makes sense for how it is being used. Can anyone confirm what the value of v2 would be?

[Star Strider]

‘...first row being all zero...’

No. The first column is all zeros, with its row length defined by whatever the value of ‘row’ is. If row=1, it’s a scalar.

Answer 1

[Thorsten]

You're right, the code adds a zero in front of vector v or a zero column if v is a matrix.

[Jon Wynveen]

So if x, y, and z are scalar values, then v2 would be [0 x y z], correct?