Divide array into 3 parts

23 views (last 30 days)
Ahmed Abdulla
Ahmed Abdulla on 15 Jan 2022
Answered: Image Analyst on 15 Jan 2022
I have a matrix of size (N,3), where I want to divide this matrix into 3 matrices where matrix 1 is 70% of N, matrix 2 is 15% of N and matrix 3 is 15% of N. is there an easy way to perform this division?

Answers (1)

Image Analyst
Image Analyst on 15 Jan 2022
Maybe use this
% Create sample data.
N = 100
M = randi(9, N, 3)
% Split matrix up into parts.
[rows, columns] = size(M)
endingRows = round([0.7, 0.85] * rows)
m1 = M(1:endingRows(1), :);
m2 = M(endingRows(1)+1:endingRows(2), :);
m3 = M(endingRows(2) + 1 : end, :);
If you want, you could use randperm to randomize where the rows are taken from.

Categories

Find more on Matrices and Arrays in Help Center and File Exchange

Products


Release

R2019a

Community Treasure Hunt

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

Start Hunting!