RegressionPerformanceTab - categorical columns not supported

[iuiu34]

Documentation link says it supports categorical columns.
But the following code

import pandas as pd
from evidently import ColumnMapping
from evidently.dashboard import Dashboard
from evidently.dashboard.tabs import (
    RegressionPerformanceTab
)
from sklearn import datasets

iris = datasets.load_iris()
iris_frame = pd.DataFrame(iris.data, columns=iris.feature_names)
iris_frame['target'] = iris.target
iris_frame['prediction'] = iris.target + 0.1
column_mapping = ColumnMapping(target='target', prediction='prediction')
# first column as string
iris_frame['sepal length (cm)'] = iris_frame['sepal length (cm)'].apply(lambda x: f"value_str_{x}")

iris_data_drift_report = Dashboard(tabs=[RegressionPerformanceTab()])
iris_data_drift_report.calculate(iris_frame[:100], iris_frame[100:], column_mapping=column_mapping)

raises error

  File "C:\...\lib\site-packages\evidently\analyzers\regression_performance_analyzer.py", line 234, in _error_cat_feature_bias
    majority=float(ref_overal_value),
ValueError: could not convert string to float: 'value_str_value_str_5.0'

[emeli-dral]

Hi @iuiu34 ,
thank you for reporting this! Categorical columns are meant to be supported in all Dashboards. We add this fix to the closest release.

[0lgaF]

Hi @iuiu34 !
Thanks for pointing this out!
The bug is fixed. 👩‍🔧 The update will be published in the next release.
#291