I have a number in one matrix, how do I find this number in a corresponding matrix?

I have a number in a matrix say 17 and I need to find this row number(17) in another matrix and find the corresponding value in that cell.

How do I pull the corresponding value for the row from another matrix?

[José-Luis]

 logical_index = some_matrix == 17;

Not sure I understand what you mean.

Answer 1

[Star Strider]

See if this does what you want:

A = [1:20]';
M = [10:27]';

y = M(A(17),:)

Here, A has numbers from 1 to 20, and we’re (not coincidentally) accessing A(17). The 17th row of M contains 26, and it returns that value in y. (If M had more than one element in row 17, the entire row would appear in y.)

[Franchesca]

This is what I want thank you very much!!

[Star Strider]

My pleasure!