creating a matrix by a vector in the following condition
1 次查看(过去 30 天)
显示 更早的评论
Imagine that there is a vector, such as:
v=[a1; a2; a3; a4; a5; a1; a2; a3; a4; a5; a1; a2; a3; a4; a5; a1; a2; a3; a4; a5; a1; a2; a3; a4; a5;]
I need to rearrange this vector and transfer it to a matrix such that the elements are positioned like the following matrix:
matrix=
a1 a2 a3
a2 a1 a2
a3 a2 a1
a4 a3 a2
a5 a4 a3
a1 a2 a3
a2 a1 a2
a3 a2 a1
a4 a3 a2
a5 a4 a3
I need a for loop that creates this matrix. It is like each column starts with the second element of the previous column(e.g.: a2 in column 2) and ends at the one to the last element of the previous column(e.g: a3 at column 3). Also, it happens for each block (a1 to a5).
I could not explain it very well but hopefully, the example makes it clear.
Thanks in advance for your help.
2 个评论
James Tursa
2018-2-23
编辑:James Tursa
2018-2-23
No, this is not clear. For one, your 3rd column does not seem to satisfy the "starts with the second element of the previous column" rule. And I can't figure out the rule for filling in the in-between elements either. Why do you have to use a for-loop?
回答(1 个)
SRT HellKitty
2018-2-23
If each column is always going to be the same length and 'v' is always going to be 1-5 repeated this should work.
matrix = [[v(1:10)], [v(2); v(1:9)], [v(3); v(2); v(1:8)]]
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!