Take row from a vector based on the value of another vector

For example, I have this column vector:

A =

           0
      5.1205
      5.6338
           0
      2.9639
      5.6774
           0
      2.6281
      0.7772
      2.5641

I want to remove other rows and take only rows where the index is from a vector

B =

       2
       3
       5
       6
       8
       9
      10

So, it will become

C =

      5.1205
      5.6338
      2.9639
      5.6774
      2.6281
      0.7772
      2.5641

[Stephen23]

Very basic MATLAB concepts, such as how to use indexing, are explained in the introductory tutorials. These are highly recommended for all beginners:

https://www.mathworks.com/help/matlab/getting-started-with-matlab.html

Answer 1

[Robert U]

Hi Jerry,

Matlab documentation is your friend:

https://de.mathworks.com/help/matlab/math/matrix-indexing.html

C = A(B)

Kind regards,

Robert