viz.ABS_PARENT
viz.REL_PARENT

Return the matrix in the parents coordinate system. If a sub-node name is specified, it will return the accumulated matrix from the sub-node up to the parents coordinate system.

viz.ABS_GLOBAL
viz.REL_GLOBAL

Return the matrix in global coordinates. If a sub-node name is specified, it will return the accumulated matrix from the sub-node up to the global coordinate system.

viz.ABS_LOCAL
viz.REL_LOCAL

This mode is only usefull when specifying a sub-node name as well. If the specified sub-node is an OSG transform node, it will return its matrix.