ones(size(data, 2), 1) , what mean??

ones(size(data, 2), 1) , what mean??

Answer 1

[Wayne King]

Create a vector of ones which has the number of rows equal to the number of columns in the matrix data and 1 column

So if data is 100x10

data = randn(100,10);

then

y = ones(size(data,2),1);

creates a vector y that is 10x1.

If data is 100x1000

then

y = ones(size(data,2),1);

creates a vector of 1s that is 1000x1