Change a 3x100 double to a 300x1 double

I have a 3 x 100 double ie. 100 column vectors next to each other all with 3 rows, and I need to take each column vector and put them all on top of each other in one long 300 x 1 column vector, what would be the easiest way of doing this?

I appreciate there is help material on idexing matrices but I could not find anything which particularly explains how to do this.

Answer 1

[madhan ravi]

reshape(a.',[],1) % a is of size 3 X 100

[Hollis Williams]

That doesn't quite work as it seems to re-order the elements somehow. So if I have a matrix like

1 8 9

2 6 4

4 2 3

I need the new vector to be

1

2

4

8

6

2

9

4

3

At the moment with your suggestion you get the right size but it's like the elements get bunched together if they have the same size.

[madhan ravi]

a = [ 1 8 9 ;...
      2 6 4 ;...
      4 2 3 ]

Result = reshape(a,[],1)
%or 
Result = a(:)

Gives:

Result =

     1
     2
     4
     8
     6
     2
     9
     4
     3