get the value of element from matrix

1 次查看（过去 30 天）
ha ha
ha ha 2019-5-17
编辑： Stephen23 2019-5-17
Let's say: I have matrix A, B
A=[1 1 200; 2 2 2;9 9 9; 5 5 5; 3 3 355];%matrix 5x3
B=[9 9; 1 1; 3 3]%matrix 3x2
How can I call the result matrix somehow the value of two first column in matrix A is the same as in matrix B?
result=[9 9 9; 1 1 200; 3 3 355];

请先登录，再回答此问题。

采纳的回答

Stephen23
Stephen23 2019-5-17
编辑：Stephen23 2019-5-17
Simply use ismember and basic MATLAB indexing:
>> [X,Y] = ismember(B,A(:,1:2),'rows');
>> Z = A(Y(X),:)
Z =
9 9 9
1 1 200
3 3 355

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Get Started with MATLAB 的更多信息

标签

尚未输入任何标签。

Community Treasure Hunt

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

Start Hunting!

Translated by