Convert vector to matrix

2 views (last 30 days)
Andres Ulloa
Andres Ulloa on 26 Jul 2022
Commented: Andres Ulloa on 26 Jul 2022
How can I convert a vector of 30482x1 (it is the accumulated of 4 measurements of 17 min at 8 hz) to a matrix that has columns of 8160 data.
  3 Comments
dpb
dpb on 26 Jul 2022
On top of which, given the statement that "it is ... 4 measurements of 17 min at 8 hz)"
>> mod(30482,4)
ans =
2
>>
so the list isn't a complete set of four.

Sign in to comment.

Accepted Answer

dpb
dpb on 26 Jul 2022
Given the above problems regarding the number of elements in the vector vis a vis the number of channels (and it can't be there's a timestamp as it's also not divisible by five), the best you can do is something like
N=numel(x); % x is the data vector, determine how long it actually is
nCh=4; % the supposed number of channels/columns
M=N-mod(N,nCh); % how many nCh records there actually are
x=reshape(x(1:M),[],nCh); % keep M samples; reshape() to nCh columns
NB --
>> 8160*4
ans =
32640
>>
  1 Comment
Andres Ulloa
Andres Ulloa on 26 Jul 2022
Thank you so much!

Sign in to comment.

More Answers (0)

Categories

Find more on Resizing and Reshaping Matrices in Help Center and File Exchange

Products


Release

R2015a

Community Treasure Hunt

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

Start Hunting!

Translated by