obs function

Extracts the observations used for the estimation

This function extracts the observations used in fixest estimation.

obs(x)

Arguments

• x: A fixest object.

Returns

It returns a simple vector of integers.

Examples

base = iris
names(base) = c("y", "x1", "x2", "x3", "species")
base$y[1:5] = NA

# Split sample estimations
est_split = feols(y ~ x1, base, split = ~species)
(obs_setosa = obs(est_split[[1]]))
(obs_versi = obs(est_split[sample = "versi", drop = TRUE]))

est_versi = feols(y ~ x1, base, subset = obs_versi)

etable(est_split, est_versi)