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

58 vues (au cours des 30 derniers jours)
Mark le 24 Juin 2014
Commenté : bassant tolba le 27 Avr 2023
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.
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### Réponse acceptée

Mischa Kim le 24 Juin 2014
Modifié(e) : Mischa Kim le 24 Juin 2014
Mark, you could use
A = [1000; 1000; 1000; 1000];
B = reshape([A'; zeros(size(A'))],[],1);
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carles Martinez le 3 Oct 2019
and in an horizontal array?

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### Plus de réponses (1)

Paul Hoffrichter le 23 Avr 2021
Modifié(e) : Paul Hoffrichter le 23 Avr 2021
>> 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
>> 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
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bassant tolba le 27 Avr 2023
Please what should I do to add inequal number of zeros between each elemet?

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