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What does the symbol ";" mean in the statement "p1 = [x; y]"?

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Manoj Murali
Manoj Murali 2012-2-15
编辑： dpb 2013-10-13
What does the symbol ";" mean in the following statement?
p1 = [x; y];

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Friedrich
Friedrich 2012-2-15
Hi,
this means x and y are combined vertically to a new vector. So p1 = [x;y] creates a vector
p1 = (x)
(y)
Or simply try it with an example
p1 = [1;2]
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Jan
Jan 2012-2-15
Horizontal concatenation: [a, b], or [a b] or cat(2, a, b) or horzcat(a, b)
Vertical concatenation: [a; b], cat(1, a, b), vertcat(a, b)
Another method, which is prone to errors is using the line break as separator:
[a
b]

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k.v.swamy
k.v.swamy 2012-2-15
hi, p1 = [x; y]; means u r combining the vectors x and y in to a single vector p1.

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