5d8b81e16143d6eea9e86a586fe737854c03c772,linearmodels/tests/panel/test_firstdifference_ols.py,,test_firstdifference_ols,#Any#,23

Before Change

    clusters = mod.dependent.dataframe.copy()
    for entity in mod.dependent.entities:
        clusters.loc[entity] = np.random.randint(9)

    ols_clusters = clusters.copy()
    index = mod.dependent.first_difference().dataframe.index

After Change

    assert_results_equal(res, ols_res)

    clusters = data.vc1
    ols_clusters = mod.reformat_clusters(data.vc1)
    fd = mod.dependent.first_difference()
    ols_clusters = ols_clusters.dataframe.loc[fd.index]
    res = mod.fit(cov_type="clustered", clusters=clusters)
    ols_res = ols_mod.fit(cov_type="clustered", clusters=ols_clusters)
    assert_results_equal(res, ols_res)

Instances