How to find elements of an array by using another array elements as indices

조회 수: 1 (최근 30일)
Hi everyone,
Let's say
A= [2 5 4 3 5 7 5 6 8 2 8 4 3 1 4];
B= [1 3 4 7];
I need to find elements of A by using elements of B as indices of elements of A. In other words, I need 1st, 3rd, 4th and 7th elements of A and information of indices is given in B. Is this possible without using for loop? If yes, how? I am glad if you can help.

채택된 답변

Ang Feng
Ang Feng 2020년 5월 17일
Matlab allows you to acces elements of a matrix in serveral ways. In your case, try this
A(B)
I have this results from Matalab
A(B)
ans =
2 4 3 5
, which is what you are looking for.
Other ways of indexing a matrix can be found here

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Matrix Indexing에 대해 자세히 알아보기

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by