Clear Filters
Clear Filters

how to convert 2D matrix to 1D

665 views (last 30 days)
Anfal
Anfal on 13 Dec 2014
Edited: AIJAZ BHAT on 2 Nov 2020
i want to convert 2D array with size 83*6580 to 1D array , any help ?

Answers (2)

Star Strider
Star Strider on 13 Dec 2014
If you just want to make a vector out of it, use the ‘(:)’ notation:
A = rand(83,6580);
V = A(:);
‘V’ is a (546140x1) double.
  3 Comments
Stephen23
Stephen23 on 14 Feb 2018
"To make V as 1D array"
Unlike some languages MATLAB does not have any concept of 1D arrays: all arrays have atleast 2 explicit dimensions and infinite implicit trailing singleton dimensions. Because the first dimension is the row dimension the most "basic" kind of vector is actually a column vector.
AIJAZ BHAT
AIJAZ BHAT on 2 Nov 2020
Edited: AIJAZ BHAT on 2 Nov 2020
Alright I also want to add a precaution here while using it, It operates in column wise concatenation.

Sign in to comment.


अंबरीश प्रशांत चांदूरकर Ambarish Prashant Chandurkar
To Convert a 2D Matrix into a 1D Array( i.e a row vector), such that row vector is formed by concatenating consecutive rows of the 2D Matrix, use the following Code :
OneDArray = reshape(TwoDArray',[1 size(TwoDArray,1)*size(TwoDArray,2)]);
  2 Comments
Tyler David MacLean
Tyler David MacLean on 6 Oct 2020
I dig the matrix math here didnt even thing of doing it like this.
Stephen23
Stephen23 on 6 Oct 2020
Simpler:
OneDArray = reshape(TwoDArray.',1,[]);

Sign in to comment.

Categories

Find more on Creating and Concatenating Matrices in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!