How to select desired row

1 次查看（过去 30 天）
Setiadi Suriana
Setiadi Suriana 2019-4-25
评论： Setiadi Suriana 2019-4-26
I have a workspace A with value 81536x10 double. I want to take create new workspace from workspace A with row 1 to 112, 225 to 336, 449 to 560 and so on.

请先登录，再回答此问题。

采纳的回答

Jos (10584)
Jos (10584) 2019-4-25
ix = [0:224:81563]' + 1:112 ; % calculate row indices
ix(ix>size(A,1)) = [] % remove row indices that are too larger
A2 = A(ix, :) % a single array
Alternatively, you can store each section in a cell array
A3 = arrayfun(@(k) A(k:k+111, :), 1:224:81563, 'un', 0) % no check of indices
  5 个评论
显示 3更早的评论
Jos (10584)
Jos (10584) 2019-4-25
Oh, this might be related to your version of ML.
A = randi(100,6,2)
ix = bsxfun(@plus,[0:1]', 1:4:size(A,1))
A(ix,:)
should return rows 1-2 and rows 5-6 of A
Setiadi Suriana
Setiadi Suriana 2019-4-26
Thank you, now it is working

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 Image Arithmetic 的更多信息

标签

产品


版本

R2017b

Community Treasure Hunt

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

Start Hunting!

Translated by