what does this line mean

t= [ones(1,10)  1+ones(1,10)  2+ones(1,15)  3+ones(1,10) ];

[Adam]

https://uk.mathworks.com/help/matlab/math/creating-and-concatenating-matrices.html

doc ones

tells you what the ones function does.

Answer 1

[Benjamin Großmann]

ones(r, c) creates an array of ones with r rows and c columns. That said, ones(1, c) creates a line vector with c elements. Here, four line vectors are created and written side by side in one line vector. Therefore, t is a line vector containing 10 ones, 10 twos, 15 threes and 10 fours.