Add covariance type to summary

statsmodels · Oct 4, 2013 · 1a1d7be · 1a1d7be
1 parent 4c0a730
commit 1a1d7be
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/statsmodels/genmod/generalized_estimating_equations.py b/statsmodels/genmod/generalized_estimating_equations.py
@@ -694,8 +694,8 @@ def fit(self, maxit=60, ctol=1e-6, starting_params=None):
             self._update_assoc(beta)
 
         if fitlack >= ctol:
-            warnings.warn("Iteration reached prior to convergence",
-                          ConvergenceWarning)
+            warnings.warn("Iteration limit reached prior to "
+                          "convergence", ConvergenceWarning)
 
         if beta is None:
             warnings.warn("Unable to estimate GEE parameters.",
@@ -967,6 +967,7 @@ def summary(self, yname=None, xname=None, title=None, alpha=.05):
                     ('Family:', [self.model.family.__class__.__name__]),
                     ('Dependence structure:', [self.model.varstruct.__class__.__name__]),
                     ('Date:', None),
+                    ('Covariance type: ', ['Robust',])
         ]
 
         NY = [len(y) for y in self.model.endog_li]