How to add data of 2 vectors with different size

Hi

I have 2 vectors and I want to merge them directly. A=[1;2;3;4;5] and B=zeros(17,1) where, elements of A are going to these indices [4 5 7 11 13];

A_new=[0;0;0;1;2;0;3;0;0;0;4;0;5;0;0;0;0]

Answer 1

[Star Strider]

One way:

B = zeros(17,1);
A = [1;2;3;4;5];
I = [4 5 7 11 13];
A_new = B;
A_new(I) = A;

[Jamais avenir]

Thanks, But I want to add them directly, for example like solving this case: If I had :

aa = [1 2 3 4]; bb = [100 100]; and wanted to get this result: 

cc = [101 102 3 4]

The answer could be :

cc = aa + [bb zeros(1,2)];

Is there any similar answer ?

[Star Strider]

That isn’t the same as in your original Question.

You have to address them by the appropriate subscripts, and it works:

aa = [1 2 3 4]; 
bb = [100 100];
cc = aa;
cc(1:2) = cc(1:2) + bb;

There may be other ways, but that’s the most efficient.