How to vertically combine two matrices with a space in-between them?

4 次查看（过去 30 天）
Jimmy Neutron
Jimmy Neutron 2021-6-16
评论： Stephen23 2021-6-16
I am working with a ton of the same matrices that I want to save into an excel file with two blank lines of cells separating all of them. In this case I will use three. I tried vertcat, but I get an error that the dimensions are not consistent... I don't understand why it should be a problem if the have the same number of columns...
A = [ 1 2 3 4; 5 6 7 8; 3 2 4 5]
B = [ 6 3 2 1, 5 6 4 6, 7 8 1 2 ]
C = [ 5 4 1 2; 5 9 5 6; 4 1 2 1]
I would like to achieve a single matrix that looks like this:
1 2 3 4
5 6 7 8
3 2 4 5
6 3 2 1
5 6 4 6
7 8 1 2
5 4 1 2
5 9 5 6
4 1 2 1
How would I go about iterating and joining the matrices in a loop?
  1 个评论
Stephen23
Stephen23 2021-6-16
"I tried vertcat, but I get an error that the dimensions are not consistent... I don't understand why it should be a problem if the have the same number of columns"
They don't have the same number of columns:
B = [ 6 3 2 1, 5 6 4 6, 7 8 1 2 ]
% ^ ^
Actually checking the sizes is much more reliable than relying on what you think/hope their sizes are.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Chunru
Chunru 2021-6-16
编辑：Chunru 2021-6-16
Ran in:
You can insert one row of NaN. An array or matrix must be filled with numbers and cannot have blanks (unless you use strings). NaNs are also considered as numbers and they can be put into an array or matrix.
A = [ 1 2 3 4; 5 6 7 8; 3 2 4 5];
B = [ 6 3 2 1; 5 6 4 6; 7 8 1 2 ];
C = [ 5 4 1 2; 5 9 5 6; 4 1 2 1];
D =[A; nan(1,4); B; nan(1,4); C]
D = 11×4
1 2 3 4 5 6 7 8 3 2 4 5 NaN NaN NaN NaN 6 3 2 1 5 6 4 6 7 8 1 2 NaN NaN NaN NaN 5 4 1 2 5 9 5 6

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 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