清空筛选条件
清空筛选条件

How to change matrix dimensions?

14 次查看（过去 30 天）
Rens
Rens 2012-12-6
Hi,
I have a question regarding a 3D matrix with portfolio returns.
I have a 10000x35x12, which is 10000 simulated return paths for 35 years and 12 months in each year. Now I want to make this a 2D matrix with dimensions 10000x420 (35x12) such that the 420 months of return are in the right order. Can somebody help me with that?
Thanks in advance!
Greetz

请先登录，再回答此问题。

回答（4 个）

Andrei Bobrov
Andrei Bobrov 2012-12-6
M - your 3D array with size < 10000,35,12 >
out = reshape(permute(M, [1 3 2]),size(M,1),[]);
Muruganandham Subramanian
try this:
a=zeros(1000,35,12);
b=reshape(a,[1000 420]);
Azzi Abdelmalek
Azzi Abdelmalek 2012-12-6
[n,m,p]=size(A)
b=reshape(A,n,p*m)
idx=reshape(1:p*m,m,p)'
out=b(:,idx(:))
Rens
Rens 2012-12-6
Thanks guys! Appreciate it! All the different codes give the same return matrix so it should be alright!

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating 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