I’m thinking of make a command to change Hankel matrix into x time series

2 次查看（过去 30 天）
Ahmed
Ahmed 2023-6-29
编辑： David Goodmanson 2023-6-30 
    y =
      [17    24     1     8    15
      23     5     7    14    16
       4     6    13    20    22
      10    12    19    21     3
      11    18    25     2     9] my question how could  I use function to be x =  [17 ,24,5,7,13,20,21,3,9].

请先登录，再回答此问题。

回答（1 个）

David Goodmanson
David Goodmanson 2023-6-29
编辑：David Goodmanson 2023-6-30
Hi Ahmed,
here is one way
y = magic(5)
n = size(y,2);
x = zeros(1,2*n-1);
x(1:2:end) = diag(y).';
x(2:2:end) = diag(y,1).'
  2 个评论
Ahmed
Ahmed 2023-6-29
编辑：Ahmed 2023-6-29
it did not work
Unable to perform assignment because the left and right sides have a different number of elements.
I have n * m matrix 5000*3000
i want to have x of time series from hankel matrix
David Goodmanson
David Goodmanson 2023-6-29
编辑：David Goodmanson 2023-6-30
Hi Ahmed,
your example was a square matrix. I changed the code in the answer so it works when there are more rows than columns, such as 5000x3000. Except in that case, at row 3000 the pattern will hit column 3000 at the right hand side of the matrix. This leaves a 2000x3000 matrix at the bottom that is not being sampled from. Is anythng supposed to happen then?

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Logical 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