Change a 3x100 double to a 300x1 double

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Hollis Williams
Hollis Williams am 24 Mär. 2019
Bearbeitet: madhan ravi am 24 Mär. 2019
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.

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madhan ravi
madhan ravi am 24 Mär. 2019
reshape(a.',[],1) % a is of size 3 X 100
  2 Kommentare
Hollis Williams
Hollis Williams am 24 Mär. 2019
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
madhan ravi am 24 Mär. 2019
Bearbeitet: madhan ravi am 24 Mär. 2019
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

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