Difference Transform

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

diff_step applies np.diff(..., n=order, axis=0) 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.
order	1	Number of differences. Must be at least 1.

The output has order fewer rows than the selected input and is stored as a payload.