write_boundaries Last update: 16.07.2026 AnalysisPly.write_boundaries(filename, format=None, offset_type='no_offset', with_direction_arrows=False, arrow_length=None, arrow_type='standard_arrow') Writes boundaries in IGES/STEP format. Parameters filename: Output file. format: ‘iges’, ‘step’, None (automatic format recognition). offset_type: ‘no_offset’ (default), ‘bottom_offset’, ‘middle_offset’, ‘top_offset’. with_direction_arrows: The element directions should be written to. arrow_length: Length of the direction arrows (default is average element edge size). arrow_type: Type to be used as arrows (‘standard_arrow’ (default), ‘no_arrow’, ‘half_arrow’).