how to create group from matrix

5 次查看（过去 30 天）
pipin
pipin 2023-8-7
评论： Voss 2023-8-7
hi, i want to do table group :
1 column :3,5,9,12
2 column: 4,6,7,8,10,11
3 colum (no..because this element are identical at colum 1 )
..
the column with all zero element to be not insert! (and the column egual )
finally i get this matrix (colum 5,6,7,8 are clone...i not insert it in the group)
1 column :3,5,9,12,0,0
2 column: 4,6,7,8,10,11
i try to use world reserved "unique" but i can't do it

请先登录，再回答此问题。

采纳的回答

Voss
Voss 2023-8-7
编辑：Voss 2023-8-7
Ran in:
M = [0 0 3 4 3 4 4 4; 0 0 5 6 5 6 6 6; 0 0 9 7 9 7 7 7; 0 0 12 8 12 8 8 8; 0 0 0 10 0 10 10 10; 0 0 0 11 0 11 11 11; 0 0 0 0 0 0 0 0; 0 0 0 0 0 0 0 0; 0 0 0 0 0 0 0 0]
M = 9×8
0 0 3 4 3 4 4 4 0 0 5 6 5 6 6 6 0 0 9 7 9 7 7 7 0 0 12 8 12 8 8 8 0 0 0 10 0 10 10 10 0 0 0 11 0 11 11 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
% unique() by column:
M = unique(M.','rows','stable').'
M = 9×3
0 3 4 0 5 6 0 9 7 0 12 8 0 0 10 0 0 11 0 0 0 0 0 0 0 0 0
% remove all-0 rows:
M(all(M == 0,2),:) = [];
% remove all-0 columns:
M(:,all(M == 0,1)) = [];
disp(M);
3 4 5 6 9 7 12 8 0 10 0 11
  4 个评论
显示 2更早的评论

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 Matrices and Arrays 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