Adjust size of vector/matrix

Hello, How can I choose a vector array with first 50 elements? Eg: Say I have vector A with 1x50 dimension and B with 1x60. How can I make dimension of B same to A such that B will have first 50 elements? I tried using resample (B,50,60) but it seems that it choose 50 elements randomly, with some repetition. Is using imresize correct?

Any help will be appreciated.

Thank you in advance.

[madhan ravi]

linspace(min(B),max(B),numel(A)) %?

[Jos (10584)]

Is there a relationship between A and B? Do you want to change the elements of the new B, or truncate B?

A simple example:

A = [1 2 3]

B = [10 20 30 40 50 60]

What do you want B to look like in the end? [10 20 30], [10 35 60]?

[Deepak Sapkota]

Thank you everyone. A and B are related. I found what I was looking for. It was new vec_B=old_B(:,1:50). And this picks first 50 elements.

Answer 1

[Kevin Phung]

f you want to set the first 50 elements of B to be equal to A:

B(1:50) = A;

If you mean to delete excess elements in B until you get to the same size as A:

B = B(1:numel(A)); % this will turn B from 1x60 to 1x50, 
                   % or whatever the number of elements in A is.

[Deepak Sapkota]

Thank you Kevin Phung

[Kevin Phung]

you're welcome!