Defining contrasts

[yakir12]

Is there any way to define contrasts (like the contrasts - kwarg in https://juliastats.org/GLM.jl/dev/api/#GLM.lm)?

For my relatively simple use-case, I just want to be able to deterministically set the "base-level" to one of the two levels in my single factor...

MWE:

df = DataFrame(y = rand(10), x = repeat(["a", "this should be the base level, not a..."], 5))
fm = @formula(y ~ x)
m = BetaRegression.fit(BetaRegressionModel, fm, df)