MATLAB Answers

Indexing problem. I want to insert a vector into another vector with a loop.

3 views (last 30 days)
GEORGIOS BEKAS
GEORGIOS BEKAS on 22 Jun 2020
Answered: the cyclist on 22 Jun 2020
I have a matrix A, whose initial form is as follows:
A = [5 4 3]
By using the following expression:
A = [A,zeros(1, 12)];
My matrix turns into:
A = [5 4 3 0 0 0 0 0 0 0 0 0 0 0 0]
I want to insert a vector
i = [1 -1 -1 1]
, and create multiple expressions of A, via a loop.
The result should be something like this:
A = [5 4 3 1 -1 -1 1 0 0 0 0 0 0 0 0]
And then like this:
A = [5 4 3 0 0 1 -1 -1 1 0 0 0 0 0 0 ]
And later like this:
A = [5 4 3 0 0 0 0 1 -1 -1 1 0 0 0 0 ]
The final form of A, should be like this:
A = [5 4 3 0 0 0 0 0 0 0 0 1 -1 -1 1]
How could I code a loop that generates these versions of A?

Answers (1)

the cyclist
the cyclist on 22 Jun 2020
Here is one way.
A = [5 4 3];
B = [1 -1 -1 1 0 0 0 0 0 0 0 0 0 0];
for nb = 0:numel(B)-4
output = [A circshift(B,nb)]
end
The variable output is the different "versions of A".

Products


Release

R2015a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!