How can I discretize data by their sign?
1 回表示 (過去 30 日間)
古いコメントを表示
I would like to discretize data by their sign and return the index of 'alternating sign'.
For example if I have a vector:
A = [-2,-1,5,-10,7,3,-9,-12,11];
Their signs are like:
s = sign(A)
[-1,-1,1,-1,1,1,-1,-1,1]
I would like to return:
[1,1,2,3,4,4,5,5,6]
0 件のコメント
採用された回答
Stephen23
2022 年 9 月 20 日
A = [-2,-1,5,-10,7,3,-9,-12,11];
B = sign(A);
C = cumsum(logical([1,diff(B)]))
0 件のコメント
その他の回答 (1 件)
Chunru
2022 年 9 月 20 日
A = [-2,-1,5,-10,7,3,-9,-12,11];
s = sign(A)
s1 = [1 diff(s)~=0]
y = cumsum(s1)
% [1,1,2,3,4,4,5,5,6]
参考
カテゴリ
Help Center および File Exchange で MATLAB Compiler についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!