How can I insert zeros into every other index of a column vector?

I would like to basically double my column vector by adding zeros in between each piece of data, for example,

A=

1000

1000

1000

1000

B=

1000

0

1000

0

1000

0

1000

0

I tried creating a column vector of zeros and then inserting those zeros into every other index without overwriting the data that was already in that index but I can't seem to get it to work. Any Suggestions would be greatly apprieciated.

Answer 1

[Mischa Kim]

Mark, you could use

 A = [1000; 1000; 1000; 1000];
 B = reshape([A'; zeros(size(A'))],[],1);

[Mark]

Very cool, thanks so much, works perfectly and is way simplier than what I was trying to do.

[Sathyanarayanan Srinivasan]

What if I want to include more than just 1 zero? How can I use the reshape function in that case?

[carles Martinez]

and in an horizontal array?

Answer 2

[Paul Hoffrichter]

@carles Martinez

>> and in an horizontal array?

Whether A is vertical or horizontal, use upsample.

A =
     1     2     3     4
>> B = upsample(A,2)
B =
     1     0     2     0     3     0     4     0
>> A = A'
A =
     1
     2
     3
     4
>> B = upsample(A,2)
B =
     1
     0
     2
     0
     3
     0
     4
     0

@Sathyanarayanan Srinivasan

>> What if I want to include more than just 1 zero?

B = upsample(A,3)
B =
     1
     0
     0
     2
     0
     0
     3
     0
     0
     4
     0
     0

[bassant tolba]

Please what should I do to add inequal number of zeros between each elemet?