Error with dodge kwarg when using FacetGrid together with pointplot

[chris-n-self]

This seems to be the same issue as this but in a different circumstance: #3553

If do the following:

g = sns.FacetGrid(
    df,
    col="col_field",
    hue="hue_field",
)
g.map(
    sns.pointplot,
    'x_field',
    'y_field',
    estimator='mean',
    errorbar='sd',
    linestyles='none',
    markers='x',
    dodge=0.1,
)

I get this error:

File ~/miniconda3/envs/my_env/lib/python3.10/site-packages/seaborn/categorical.py:1217, in _CategoricalPlotter.plot_points(self, aggregator, markers, linestyles, dodge, color, capsize, err_kws, plot_kws)
   1208 agg_data = sub_data if sub_data.empty else (
   1209     sub_data
   1210     .groupby(self.orient)
   (...)
   1213     .reset_index()
   1214 )
   1216 if dodge:
-> 1217     hue_idx = self._hue_map.levels.index(sub_vars["hue"])
   1218     step_size = dodge / (n_hue_levels - 1)
   1219     offset = -dodge / 2 + step_size * hue_idx

AttributeError: 'NoneType' object has no attribute 'index'

If I set dodge=True instead of a value I do not get an error but the dodge is not applied

[thuiop]

Please provide a reproducible example. But I bet the issue is that you are passing the hue argument to the FacetGrid instead of inside map.

[mwaskom]

Yes — this wouldn't work anyway, even if it gave a better error message. I think you want to use catplot here.