featurebyte.Feature.log

log( ) -> FrozenSeriesT

Description

Computes the natural logarithm of each element.

Returns

• FrozenSeriesT
  Column or Feature with natural logarithm values
  
  

Examples

Compute natural logarithm values for a Column in a View:

>>> view = catalog.get_view("GROCERYINVOICE")
>>> view["AmountLog"] = view["Amount"].log()
>>> view.preview(5).filter(regex="Amount")
  Amount  AmountLog
0   10.68   2.368373
1   38.04   3.638638
2    1.99   0.688135
3   37.21   3.616578
4    1.20   0.182322

Compute natural logarithm values for a Feature:

>>> feature = catalog.get_feature("InvoiceCount_60days")
>>> feature_log = (feature + 1.0).log()