For a matrix with an unknown number of rows, how to find the number of rows n and transform it into n matrices.

7 次查看（过去 30 天）
Wesley
Wesley 2020-12-11
评论： Ameer Hamza 2020-12-11
  8 个评论
显示 6更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Ameer Hamza
Ameer Hamza 2020-12-11
编辑：Ameer Hamza 2020-12-11
You can find the number of rows in a matrix using size()
data1;
n = size(data,1)
or height() [only in R2020b and later]
data1;
n = height(data)
The second part of your question about transforming it into a matrix is not clear.

更多回答（1 个）

Ameer Hamza
Ameer Hamza 2020-12-11
编辑：Ameer Hamza 2020-12-11
I guess you are trying to do something like this
rows = data1(:,2);
cols = data1(:,1);
M = zeros(max(rows), max(cols));
idx = sub2ind(size(M), rows, cols);
M(idx) = 1;
Result
>> imshow(M)
  4 个评论
显示 2更早的评论

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 3-D Scene Control 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