清空筛选条件
清空筛选条件

replace the unique value of a vector

2 次查看（过去 30 天）
pavlos
pavlos 2014-2-9
编辑： Jan 2014-2-9
Hello,
Please help me with the following.
Consider a vector a=[2;3;3;5;5;5];
How can we replace the unique value "2" with the most populated one, i.e. "5".
The unique value can be found anywhere in the vector, in the above example it is shown as the first element.
The new vector should look like this:
b=[5;3;3;5;5;5];
Thank you very much.
Best,
Pavlos

请先登录，再回答此问题。

采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2014-2-9
编辑：Azzi Abdelmalek 2014-2-9
a=[2;3;3;5;5;5];
c=unique(a);
ii=histc(a,c)
[idx1,idx1]=min(ii)
[idx2,idx2]=max(ii)
minv=c(idx1)
maxv=c(idx2)
b=a
b(a==minv)=maxv
%or
a=[2;3;3;5;5;5];
c=unique(a);
ii=histc(a,c)
[~,jj]=sort(ii)
a(a==c(jj(1)))=c(jj(end))

更多回答（2 个）

Jan
Jan 2014-2-9
编辑：Jan 2014-2-9
See FEX: RunLength :
a = [2;3;3;5;5;5];
[B, N, Ind] = RunLength(a);
[maxNum, maxInd] = max(N);
mostValue = B(maxInd);
uniqueInd = Ind(N == 1);
a(uniqueInd) = mostValue;
pavlos
pavlos 2014-2-9
Both methods work excellent.
Thank you very much.

类别

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

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by