Log Transform

log_step(
    name: str,
    **kwargs: Any,
) -> MCStep

log_step applies log(x + offset) elementwise to a selected input array.

Key Parameters:

Name	Default	Description
source	required	Input source channel.
filter_key	"filter"	Filter result key when reading filter output.
payload_key	None	Producer payload key when source="payload".
columns	None	Optional column subset.
burn_in	0	Rows dropped before transformation.
drop_initial	False	Drop the initial state row for state inputs.
offset	0.0	Constant added before taking logs.

The output is stored in the step payload and can be consumed downstream with source="payload".