timor.utilities.errors

Custom error messages for robotics applications

Exceptions

DuplicateValueError	This can be raised whenever a duplicate value is added to a container.
InvalidAssemblyError	This can be raised when an assembly of modules should be created that's not valid
NonOrthogonalRotationError	Raised when a rotation matrix is not orthogonal
RotationVolumeError	Raised when a rotation matrix is not volume preserving
TimeNotFoundError	Raised when a time step t can not be found in a trajectory, solution, etc. that is indexed at this time t.
UnexpectedSpatialShapeError	Can be thrown whenever a spatial input (point, rotation, transformation) has the wrong input shape
UniqueValueError	This error can be raised whenever a values, such as an ID or name should be unique, but isn't

Functions

assert_has_3d_point(p)	Checks whether the input can be interpreted as a point in cartesian space
assert_is_3d_point(p)	Stronger assertion on points in cartesian space
assert_is_homogeneous_transformation(T)	Checks for shape, valid rotation matrix and last row
assert_is_rotation_matrix(R)	Checks whether a 3x3 matrix is a valid rotation (orthonormal)

Module Contents

exception timor.utilities.errors.DuplicateValueError

This can be raised whenever a duplicate value is added to a container.

Containers, such as a list, set, that allows unique values only.

Initialize self. See help(type(self)) for accurate signature.

exception timor.utilities.errors.InvalidAssemblyError

This can be raised when an assembly of modules should be created that’s not valid

Initialize self. See help(type(self)) for accurate signature.

exception timor.utilities.errors.NonOrthogonalRotationError

Raised when a rotation matrix is not orthogonal

Initialize self. See help(type(self)) for accurate signature.

exception timor.utilities.errors.RotationVolumeError

Raised when a rotation matrix is not volume preserving

Initialize self. See help(type(self)) for accurate signature.

exception timor.utilities.errors.TimeNotFoundError

Raised when a time step t can not be found in a trajectory, solution, etc. that is indexed at this time t.

Initialize self. See help(type(self)) for accurate signature.

exception timor.utilities.errors.UnexpectedSpatialShapeError

Can be thrown whenever a spatial input (point, rotation, transformation) has the wrong input shape

Initialize self. See help(type(self)) for accurate signature.

exception timor.utilities.errors.UniqueValueError

This error can be raised whenever a values, such as an ID or name should be unique, but isn’t

Initialize self. See help(type(self)) for accurate signature.

timor.utilities.errors.assert_has_3d_point(p)

Checks whether the input can be interpreted as a point in cartesian space

Raises:

UnexpectedSpatialShapeError

Parameters:

p (numpy.ndarray)

timor.utilities.errors.assert_is_3d_point(p)

Stronger assertion on points in cartesian space

Raises:

UnexpectedSpatialShapeError

Parameters:

p (numpy.ndarray)

timor.utilities.errors.assert_is_homogeneous_transformation(T)

Checks for shape, valid rotation matrix and last row

Raises:

UnexpectedSpatialShapeError, AssertionError

Parameters:

T (numpy.ndarray)

timor.utilities.errors.assert_is_rotation_matrix(R)

Checks whether a 3x3 matrix is a valid rotation (orthonormal)

Raises:

AssertionError

Parameters:

R (numpy.ndarray)