R: Extracts the observations used for the estimation

obs {fixest} | R Documentation

## Extracts the observations used for the estimation

### Description

This function extracts the observations used in `fixest` estimation.

### Usage

    obs(x)

### Arguments

`x` | A `fixest` object.

### Value

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$setosa))
    (obs_versi = obs(est_split$versicolor))

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

    etable(est_split, est_versi)

[Package fixest version 0.10.1 Index]