| Argument | Variable | Type | Length | Range | Default | Description |
| id | Id | str | 1 | | 0 | script id |
| handle | Self | self | 1 | | | handle to self |
| disabled | Disabled | bool | 1 | | 0 | disable execution and piping |
| i | Centerlines | vtkPolyData | 1 | | | the input split centerlines |
| ifile | CenterlinesInputFileName | str | 1 | | | filename for the default Centerlines reader |
| referencesystems | ReferenceSystems | vtkPolyData | 1 | | | reference systems relative to the split centerlines |
| referencesystemsfile | ReferenceSystemsInputFileName | str | 1 | | | filename for the default ReferenceSystems reader |
| radiusarray | RadiusArrayName | str | 1 | | MaximumInscribedSphereRadius | name of the array where centerline radius values are stored |
| groupidsarray | GroupIdsArrayName | str | 1 | | GroupIds | name of the array where centerline group ids are stored |
| centerlineidsarray | CenterlineIdsArrayName | str | 1 | | CenterlineIds | name of the array where centerline ids are stored |
| tractidsarray | TractIdsArrayName | str | 1 | | TractIds | name of the array where centerline tract ids are stored |
| blankingarray | BlankingArrayName | str | 1 | | Blanking | name of the array where blanking information about branches is stored |
| normalarray | ReferenceSystemsNormalArrayName | str | 1 | | Normal | name of the array where reference system normal vectors are stored |
| upnormalarray | ReferenceSystemsUpNormalArrayName | str | 1 | | UpNormal | name of the array where reference system upnormal vectors are stored |
| vectorsarray | BifurcationVectorsArrayName | str | 1 | | BifurcationVectors | |
| inplanevectorsarray | InPlaneBifurcationVectorsArrayName | str | 1 | | InPlaneBifurcationVectors | |
| outofplanevectorsarray | OutOfPlaneBifurcationVectorsArrayName | str | 1 | | OutOfPlaneBifurcationVectors | |
| inplaneanglesarray | InPlaneBifurcationVectorAnglesArrayName | str | 1 | | InPlaneBifurcationVectorAngles | |
| outofplaneanglesarray | OutOfPlaneBifurcationVectorAnglesArrayName | str | 1 | | OutOfPlaneBifurcationVectorAngles | |
| orientationarray | BifurcationVectorsOrientationArrayName | str | 1 | | BifurcationVectorsOrientation | |
| bifurcationgroupidsarray | BifurcationGroupIdsArrayName | str | 1 | | BifurcationGroupIds | |
| normalizevectors | NormalizeBifurcationVectors | bool | 1 | | 0 | |
| ofile | BifurcationVectorsOutputFileName | str | 1 | | | filename for the default BifurcationVectors writer |
| Argument | Variable | Type | Length | Range | Default | Description |
| id | Id | str | 1 | | 0 | script id |
| handle | Self | self | 1 | | | handle to self |
| o | BifurcationVectors | vtkPolyData | 1 | | | the output data |
| vectorsarray | BifurcationVectorsArrayName | str | 1 | | BifurcationVectors | |
| inplanevectorsarray | InPlaneBifurcationVectorsArrayName | str | 1 | | InPlaneBifurcationVectors | |
| outofplanevectorsarray | OutOfPlaneBifurcationVectorsArrayName | str | 1 | | OutOfPlaneBifurcationVectors | |
| inplaneanglesarray | InPlaneBifurcationVectorAnglesArrayName | str | 1 | | InPlaneBifurcationVectorAngles | |
| outofplaneanglesarray | OutOfPlaneBifurcationVectorAnglesArrayName | str | 1 | | OutOfPlaneBifurcationVectorAngles | |
| orientationarray | BifurcationVectorsOrientationArrayName | str | 1 | | BifurcationVectorsOrientation | |
| bifurcationgroupidsarray | BifurcationGroupIdsArrayName | str | 1 | | BifurcationGroupIds | |
