Defining&visualising 3-or-more-dimensional arrays using the Variables/Workspace window

Question

z8080 2017-1-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/319187-defining-visualising-3-or-more-dimensional-arrays-using-the-variables-workspace-window

评论： Marco Morganti 2017-1-6

I'd like to use the Variables/Workspace window to visually define a 3D array consisting of N matrices, by pasting the values of each constituent matrix. The first index of the 3D array would indicate the matrix number, and the remaining two indices would define the matrices themselves.

Problem is, the Variables/Workspace window does not seem too dimensional-friendly, and displays arrays of 3 or more dimensions by enumerating along the final dimension.

Hope I've explained this clearly enough, thanks for any replies! Am using v2016a.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Marco Morganti 2017-1-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/319187-defining-visualising-3-or-more-dimensional-arrays-using-the-variables-workspace-window#answer_249486

在 MATLAB Online 中打开

Hi,

you could use the permute() function to alter the order of the dimensions. In this case, if you want your current third dimension to become the first one you could use the command:

permute(A,[3,1,2])

where A is the matrix you want to change.

2 个评论
显示无隐藏无

z8080 2017-1-5

Thanks but how does this allow me to input data into the 3D array matrix by matrix, as I explained?

Marco Morganti 2017-1-6

在 MATLAB Online 中打开

You could concatenate the matrices along the third dimension, so that when visualizing the 3D matrix you would see the original matrices separately:

a = zeros(4);
b = ones(4);
c = 2*ones(4);
cat(3,a,b,c)
ans(:,:,1) =
     0     0
     0     0
ans(:,:,2) =
     1     1
     1     1
ans(:,:,3) =
     2     2
     2     2