scipy.spatial.transform.RigidTransform.
__getitem__#
- RigidTransform.__getitem__(self, indexer)#
- Extract transform(s) at given index(es) from this object. - Creates a new - RigidTransforminstance containing a subset of transforms stored in this object.- Parameters:
- indexerint or slice or array_like
- Specifies which transform(s) to extract. A single indexer must be specified, i.e. as if indexing a 1 dimensional array or list. 
 
- Returns:
- transformRigidTransforminstance
- Contains
- a single transform, if indexer is a single index 
- a stack of transform(s), if indexer is a slice, or an index array. 
 
 
 
- transform
- Raises:
- TypeError
- If the transform is a single transform. 
 
 - Examples - >>> from scipy.spatial.transform import RigidTransform as Tf >>> t = [[0, 0, 0], [1, 0, 0], [2, 0, 0]] # 3 translations >>> tf = Tf.from_translation(t) - A single index returns a single transform: - >>> tf[0].as_matrix() array([[1., 0., 0., 0.], [0., 1., 0., 0.], [0., 0., 1., 0.], [0., 0., 0., 1.]]) - A slice returns a stack of transforms: - >>> tf[1:3].translation array([[1., 0., 0.], [2., 0., 0.]]) - An index array returns a stack of transforms: - >>> tf[[0, 2]].translation array([[0., 0., 0.], [2., 0., 0.]])