MATLAB: Fit a constant only linear regression model using ‘fitlm’

Question

I have the following simple regression model

y(t) = B + u(t)

where B=1 and u(t) are random drawings from the standard normal distribution. Also n = 100. I would like to fit a constant only linear regression model but am unsure how to do so. I imagine I have to use 'fitlm', but for some reason cannot specify that there are no predictor variables . My code so far is simply:

b = 1

u = randn(100,1)

y = b + u

Answer 1

If you wanted to fit this using fitlm you could do the following:

fit1 = fitlm(ones(size(y)),y,'y~1');