Includes combination components, like 'additive_terms'. These combination components will be added to the 'modes' input.
regressor_column_matrix(m, seasonal.features, modes)
Prophet object.
Constructed seasonal features dataframe.
List with keys 'additive' and 'multiplicative' with arrays of component names for each mode of seasonality.
List with items component.cols: A binary indicator dataframe with columns seasonal components and rows columns in seasonal.features. Entry is 1 if that column is used in that component. modes: Updated input with combination components.