Fit multidimensional array into other multidimensional matrix with changing index

Hi!

Let's say you have the matrix A= 4 x 4 x 2 and B=2 x 2 x 2. I want for A(:,:,1) to paste B(:,:,1)=[1 1; 1 1] onto A(:,:,1) such that

A(:,:,1)=[ 1 1 0 0;

1 1 0 0;

0 0 0 0;

0 0 0 0]

and I want for A(:,:,2) to paste B(:,:,2)=[2 2; 2 2] onto A(:,:,2) such that

A(:,:,1)=[ 0 0 0 0;

0 0 0 0;

0 0 2 2;

0 0 2 2]

without using a for loop. Is this possible?

Kind regards,

Pascal

Answer 1

[KALYAN ACHARJYA]

Suppose, as per your question, considering random A and B

A=rand(4,4,2);
B=rand(2,2,2);

Now you want for A(:,:,1) to paste B(:,:,1)

Let's see

>>A(:,:,1)
    0.4387    0.1869    0.7094    0.6551
    0.3816    0.4898    0.7547    0.1626
    0.7655    0.4456    0.2760    0.1190
    0.7952    0.6463    0.6797    0.4984

A(:,:,1) is having size 4x4 and

>>B(:,:,1)
 0.8143    0.9293
 0.2435    0.3500

B(:,:,1) is having size 2x2

How do you going to replace?

[Pascal Loohuis]

It's not as a replacement, it's more that certain values will be replaced by the values of B. Sorry for the misunderstanding.

[KALYAN ACHARJYA]

certain values will be replaced by the values of B

Just an example:

>>A(:,:,1)
    0.4387    0.1869    0.7094    0.6551
    0.3816    0.4898    0.7547    0.1626
    0.7655    0.4456    0.2760    0.1190
    0.7952    0.6463    0.6797    0.4984

and

>>B(:,:,1)
 0.8143    0.9293
 0.2435    0.3500

Now you can replace the B(:,:,1) in any quadrant of A(:,:,1) ; 2x 2 area??

Is this??

[Pascal Loohuis]

That's right. But I want to extend it to a multidimensional A and B. Whereby the different 2 by 2 matrices of B are placed on different positions within matrices of A.