concatenate vectors

Hi, let's say I have e.g. three column-vectors a(nx1), b(nx1), c(nx1) I want to concatinate them to have another column-vector (nx1) which has a,b,c inside one after another. How do I do this? Any help regarding that question is appreciated! Thanks in advance!

Answer 1

[Titus Edelhofer]

Hi Miriam,

now with column vectors. Does this what you expect?

a = [1; 2];
b = [3; 4; 5];
c = [6; 7];
d = [a; b; c]

Titus

[Miriam]

Sorry, I mean column vectors of course!! (nx1)

[Miriam]

I changed it in the question, thanks for the remark.

[Titus Edelhofer]

updated as well ;-)

Answer 2

[Walter Roberson]

You cannot do that with numeric vectors. Numeric vectors do not permit nesting.

An nx1 vector is a column vector, by the way, not a row vector.

The code below creates an n x 1 cell array in which each entry is [a(k),b(k),c(k)]

NewArray = mat2cell([a,b,c], ones(1,length(a)), 3 );

I would, though, tend to think that likely whatever you are doing would be more easily done by creating an n x 3 array:

NewArray  = [a,b,c];

Answer 3

[William]

Newvect = [a(nx1);b(nx1);c(nx1)]

or

Newvect = [a(nx1) b(nx1)c(nx1)]

or try

help strcat
help horzcat

[Miriam]

ok great, that's it, thanks!