MATLAB: Insert values of a vector between two elements of another vector and at the end of it.

arrayinsertvectors

I have a vector a=[0.2 2 3 4] and I have another vector that is b=[0.1 1 2 5] so how can I insert each element of b between elements of a and the last element of b after the last element of a?

So in effect, take 0.1 from b, insert it between 0.2 and 2 in a, take 1 from b and insert it between 2 and 3 in a, take 2 from b and insert it between 3 and 4 and take 5 from b and insert it after 4

so after this process, a new matrix say c will be c=[0.2 0.1 2 1 3 2 4 5]

The logic I would assume would be used is take the last element of b and remove it, the follow a process to insert the remaining values of b into a then in that new vector, insert the last value at the end. Idk, any help is greatly appreciated, thanks.

Best Answer

Is it just

c = [a;b]
c = c(:)

Did I understand it correctly?

HTH

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MATLAB: Cumnwise multiplication between a matrix and a vector.

A = [1 2 3; 7 2 4; 2 0 4]
B = [1 2 3]
C = bsxfun(@times,A,B)

MATLAB: How to make a causal interleaver in the Communications Toolbox

Causal Interleaving is not available in Communications Toolbox, as a workaround you can write your own function that does this. If you re-arrange your input to be:

[a0 a1 a2 a3 a4 b0 b1 b2 b3 b4 c0 c1 c2 c3 c4] as :

input = [0 0 0 0 0; a0 a1 a2 a3 a4; b0 b1 b2 b3 b4; c0 c1 c2 c3 c4]

The output is:

 input =
 [  0,  0,   0,   0,    0 ]
 [ a0, a1, a2, a3, a4 ]
 [ b0, b1, b2, b3, b4]
 [ c0, c1, c2, c3, c4 ]

Then you truncate zeros of the first 3 columns, and c3 and c4 of the last 2 columns to get the following matrix:

 A1 =
 [ a0, a1, a2,  0,   0 ]
 [ b0, b1, b2, a3, a4]
 [ c0, c1, c2, b3, b4]

You can see that the output A0 0 A1 0 A2 B0 A3 B1 A4 B2 C0 B3 C1 B4 C2 ...is done by the following operations on the matrix A1:

1. Leaving the first column unchanged,

2. Replacing the second column with the fourth column,

3. Replacing the third column with second column,

4. The fourth column with the fifth column,

5. and the fifth column with the third column,

The output is:

 Output =
 [ a0,  0, a1,  0,  a2 ]
 [ b0, a3, b1, a4, b2]
 [ c0, b3, c1, b4, c2]

Note that you can use the following tips to get and change columns:

If input is A = [0 0 0 0 0; a0 a1 a2 a3; a4 b0 b1 b2 b3 b4; c0 c1 c2 c3 c4]

e1 = A(:,1); e2 = A(:,2)…to get columns of A

e1(1) = []; truncates the first element of the first column of A

e4(4) = []; truncates the last element of the last element of the last column of A

Best Answer

Related Solutions

MATLAB: Cumnwise multiplication between a matrix and a vector.

MATLAB: How to make a causal interleaver in the Communications Toolbox

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