MAINT: organize imports

Author: AlexanderFabisch

examples/animations/animate_angle_axis_interpolation.py

@@ -11,10 +11,11 @@
 interpolate with slerp.
 """
 
-import numpy as np
+import matplotlib.animation as animation
 import matplotlib.pyplot as plt
+import numpy as np
 from mpl_toolkits.mplot3d import axes3d  # noqa: F401
-import matplotlib.animation as animation
+
 from pytransform3d import rotations as pr
 
 velocity = None

examples/animations/animate_camera.py

@@ -6,13 +6,13 @@
 Animate a camera moving along a circular trajectory while looking at a target.
 """
 
-import matplotlib.pyplot as plt
 import matplotlib.animation as animation
+import matplotlib.pyplot as plt
 import numpy as np
 
+from pytransform3d.plot_utils import Frame, Camera, make_3d_axis
 from pytransform3d.rotations import matrix_from_euler
 from pytransform3d.transformations import transform_from
-from pytransform3d.plot_utils import Frame, Camera, make_3d_axis
 
 
 def update_camera(step, n_frames, camera):

examples/animations/animate_quaternion_integration.py

@@ -6,10 +6,11 @@
 Integrate angular accelerations to a quaternion sequence and animate it.
 """
 
-import numpy as np
+import matplotlib.animation as animation
 import matplotlib.pyplot as plt
+import numpy as np
 from mpl_toolkits.mplot3d import axes3d  # noqa: F401
-import matplotlib.animation as animation
+
 from pytransform3d import rotations as pr
 
 

examples/animations/animate_quaternion_interpolation.py

@@ -11,12 +11,12 @@
 slerp.
 """
 
-import numpy as np
+import matplotlib.animation as animation
 import matplotlib.pyplot as plt
+import numpy as np
 from mpl_toolkits.mplot3d import axes3d  # noqa: F401
-import matplotlib.animation as animation
-from pytransform3d import rotations as pr
 
+from pytransform3d import rotations as pr
 
 velocity = None
 last_R = None

examples/animations/animate_rotation.py

@@ -8,12 +8,13 @@
 that will be rotated about the x-axis.
 """
 
-import numpy as np
+import matplotlib.animation as animation
 import matplotlib.pyplot as plt
+import numpy as np
 from mpl_toolkits.mplot3d import axes3d  # noqa: F401
-import matplotlib.animation as animation
-from pytransform3d.plot_utils import Frame
+
 from pytransform3d import rotations as pr
+from pytransform3d.plot_utils import Frame
 
 
 def update_frame(step, n_frames, frame):

examples/animations/animate_trajectory.py

@@ -6,10 +6,11 @@
 Animates a trajectory.
 """
 
-import numpy as np
+import matplotlib.animation as animation
 import matplotlib.pyplot as plt
+import numpy as np
 from mpl_toolkits.mplot3d import axes3d  # noqa: F401
-import matplotlib.animation as animation
+
 from pytransform3d.plot_utils import Trajectory
 from pytransform3d.rotations import passive_matrix_from_angle, R_id
 from pytransform3d.transformations import transform_from, concat

examples/apps/app_transformation_editor.py

@@ -6,11 +6,10 @@
 The transformation editor can be used to manipulate transformations.
 """
 
-from pytransform3d.transform_manager import TransformManager
 from pytransform3d.editor import TransformEditor
-from pytransform3d.transformations import transform_from
 from pytransform3d.rotations import active_matrix_from_extrinsic_euler_xyx
-
+from pytransform3d.transform_manager import TransformManager
+from pytransform3d.transformations import transform_from
 
 tm = TransformManager()
 

examples/plots/plot_axis_angle.py

@@ -8,16 +8,16 @@
 axis.
 """
 
-import numpy as np
 import matplotlib.pyplot as plt
+import numpy as np
+
 from pytransform3d.rotations import (
     random_axis_angle,
     matrix_from_axis_angle,
     plot_basis,
     plot_axis_angle,
 )
 
-
 original = random_axis_angle(np.random.RandomState(5))
 ax = plot_axis_angle(a=original)
 for fraction in np.linspace(0, 1, 50):

examples/plots/plot_axis_angle_from_two_vectors.py

@@ -11,16 +11,16 @@
 lines.
 """
 
-import numpy as np
 import matplotlib.pyplot as plt
+import numpy as np
+
+from pytransform3d.plot_utils import make_3d_axis, plot_vector
 from pytransform3d.rotations import (
     axis_angle_from_two_directions,
     matrix_from_axis_angle,
     plot_axis_angle,
     plot_basis,
 )
-from pytransform3d.plot_utils import make_3d_axis, plot_vector
-
 
 a = np.array([1.0, 0.0, 0.0])
 b = np.array([0.76958075, -0.49039301, -0.40897453])

examples/plots/plot_bivector.py

@@ -13,10 +13,10 @@
 normalizing the vector.
 """
 
-import numpy as np
 import matplotlib.pyplot as plt
-import pytransform3d.rotations as pr
+import numpy as np
 
+import pytransform3d.rotations as pr
 
 a = np.array([0.6, 0.3, 0.9])
 b = np.array([0.4, 0.8, 0.2])