<class 'spatialmath.pose3d.SE3'>

[pinocchio-1]

Hello，i'm a fresh man in this field. How can I convert <class 'spatialmath.pose3d.SE3'> to 4*4 numpy array （because I want to refer every single element of the fkine result ）.Thank you very much.
For example:
T = myrobot.fkine(q)
print(T[1][3])-----ERROR

[micsc12]

Hello :)
SE3 objects have a .data property, which you can use. Remember that SE3 can contain both a single pose or a list of poses, which is why it returns a list of numpy arrays. Try this:

# show all poses 
print(T.data)
# show first pose in list
print(T.data[0])
# access translational part of first pose: 
print(T.data[0][0:3,3])

[petercorke]

The preferred way is T.A where A stands for (numpy) array. This is common to all the pose classes.