Excluding one vector from another vector with repetition

4 次查看（过去 30 天）
Sarah Ansari
Sarah Ansari 2018-6-18
评论： Bruno Luong 2020-12-9
I want to get a new vector that has elements of S excluding the values in C with repetition.
S=[1 3 0 2 0 0] C=[0 2] B=setdiff(S,C) B=[1 3] while I need the output as [1 3 0 0]. I need the other zeros in the output but setdiff removes all the zeros. I also tried ismember function and it has the same result.
B=S(~ismember(S,C)) B=[1 3]
To make it clearer, I need to exclude a from s with repetition while keeping the same order of elements in s.

请先登录，再回答此问题。

采纳的回答

Paolo
Paolo 2018-6-18
S=[1 3 0 2 0 0];
C=[0 2];
[~,col] = ismember(C,S);
S(col) = [];
S =
1 3 0 0
  7 个评论
显示 5更早的评论
Jan
Jan 2020-12-9
Please open a new thread, because this is a different question. Include some examples, which clarify uniquely, which outputs are wanted for which input.

请先登录，再进行评论。

更多回答（1 个）

Bruno Luong
Bruno Luong 2020-12-9
编辑：Bruno Luong 2020-12-9
From Alexander Gallard above comment (I agree he should open a new thread)
"This method didn't work for me if my C was, say, [0,0,2]
If I want to remove two zeros this wasn't quite cutting it.'
A=[3 1 0 2 0 0 4];
B=[0 7 0 2];
D = DiffRep(A,B)
function D=DiffRep(A,B)
D=A(~ismember(count(A),count(B),'rows'));
end
function C=count(A)
A=A(:);
[C,i]=sort(A);
j=find([true;diff(C)]);
lgt=diff(j);
c=ones(size(A));
c(j(2:end))=1-lgt;
c=cumsum(c);
c(i)=c;
C=[A,c];
end
gives result
A =
3 1 0 2 0 0 4
B =
0 7 0 2
D =
3 1 0 4

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

产品


版本

R2016b

Community Treasure Hunt

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

Start Hunting!

Translated by