清空筛选条件
清空筛选条件

matrix ismember of another matrix

3 次查看（过去 30 天）
alex
alex 2014-3-17
评论： alex 2014-3-17
hello!
i have
A=[1 2 3 4 5]
B=[2 4]
i want to create D=[1 3 5], which is the A without the elements of B
j=1;
A=[1 2 3 4 5];
B=[2 4];
C=ismember(A,B);
for i=1:5
if C(i)==0
A(j)=A(i);
j=j+1;
end
end
for i=1:3
D(i)=A(i);
end
the code above works fine,but i want to know if there is any other way to do this,for any matrices with any dimentions
Thank you very much!

请先登录，再回答此问题。

采纳的回答

per isakson
per isakson 2014-3-17
编辑：per isakson 2014-3-17
A=[1 2 3 4 5];
B=[2 4];
C = setdiff( A, B )
returns
C =
1 3 5
Not sorted:
C = setdiff( A, B, 'stable' );
.
This works with vectors, however, "any matrices with any dimentions" is a different story
  2 个评论
alex
alex 2014-3-17
i have a problem here
A = 2:.1:15
B=[9.4000 10.4000]
C=setdiff(A,B)
the elements 9.4000 and 10.4000 are in the C
however,if B=[9.3000 10.3000] then the setdiff works fine.
any idea why this happens?

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Whos 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by