CODEWITHSUNDEEP
matlab
guanglei
guanglei

Reputation: 176

In matlab, how to increase the dimension of a matrix?

I have a matrix A=(1 2; 3 4), and I want to augment A to B = (1 2 0; 3 4 0; 0 0 0), what can I do ?

One way is: B = [[A, zeros(2,1)]; zeros(1,3)]

But it might be clumsy in a dynamic process, any other ideas ?

Upvotes: 2

Views: 908

Answers (2)

JustinBlaber
JustinBlaber

Reputation: 4650

Also:

padarray(A,[1 1],'post')

Output:

ans =

     1     2     0
     3     4     0
     0     0     0

It's a little more versatile and makes the semantics very clear.

Upvotes: 1

Daniel
Daniel

Reputation: 36710

B=A
B(3,3)=0

Matlab fills the other elements automatically with zeros

Upvotes: 5

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