Indexing values, selecting a range, and outputting values

Let's say I have two sets of data.

A = [1 2 3 4 5 6 7 8 9 10]

B = [4 5 2 8 9 0 1 0 4 6 ]

Let's say I only care about values of B for a given range in A (for example 4<= A <=7) and want the corresponding values of B in a matrix C = [8 9 0 1].

How do I map the values of B to values in A, select the given range in A, then output the correct B values to matrix C? Thanks!

Answer 1

[Stephen23]

Use logical indexing:

>> A = [1 2 3 4 5 6 7 8 9 10];
>> B = [4 5 2 8 9 0 1 0 4 6 ];
>> C = B(A>=4 & A<=7)
C =
   8   9   0   1

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