Source code for pm4py.visualization.petri_net.util.alignments_decoration

from pm4py.util.colors import get_transitions_color




def get_alignments_decoration(
    net, im, fm, log=None, aligned_traces=None, parameters=None
):
    """
    Get a decoration for the Petri net based on alignments

    Parameters
    -------------
    net
        Petri net
    im
        Initial marking
    fm
        Final marking
    log
        Event log
    aligned_traces
        Aligned traces
    parameters
        Parameters of the algorithm

    Returns
    -------------
    decorations
        Decorations to use
    """
    if parameters is None:
        parameters = {}
    if aligned_traces is None and log is not None:
        from pm4py.algo.conformance.alignments.petri_net import (
            algorithm as alignments,
        )

        aligned_traces = alignments.apply(
            log, net, im, fm, parameters={"ret_tuple_as_trans_desc": True}
        )
    decorations = {}
    net_transitions = {}
    for trans in net.transitions:
        net_transitions[trans.name] = trans
    for align_trace0 in aligned_traces:
        align_trace = align_trace0["alignment"]
        for move in align_trace:
            move_trans_name = move[0][1]
            activity_trace_name = move[0][0]
            if move_trans_name in net_transitions:
                trans = net_transitions[move_trans_name]
                if trans not in decorations:
                    decorations[trans] = {
                        "count_fit": 0,
                        "count_move_on_model": 0,
                    }

                if activity_trace_name == ">>":
                    decorations[trans]["count_move_on_model"] = (
                        decorations[trans]["count_move_on_model"] + 1
                    )
                else:
                    decorations[trans]["count_fit"] = (
                        decorations[trans]["count_fit"] + 1
                    )

    for trans in decorations:
        if trans.label is not None:
            decorations[trans]["label"] = (
                trans.label
                + " ("
                + str(decorations[trans]["count_move_on_model"])
                + ","
                + str(decorations[trans]["count_fit"])
                + ")"
            )
            decorations[trans]["color"] = get_transitions_color(
                decorations[trans]["count_move_on_model"],
                decorations[trans]["count_fit"],
            )

    return decorations