Numpy/Python Array Value error

Question

I am trying to create a function to calculate the end-effector position of robotic arm using numpy arrays, but am coming across an error when the code runs. I have a function that passes in angles as arguments.

def FinalPosition(angle1, angle2, angle3, angle4, angle5, angle6):

My IDE is highlighting the last two lines of the array:

    T1 = np.array([np.cos(angle1), -np.sin(angle1)*np.cos(b1), np.sin(angle1)*np.sin(b1), a1*np.cos(angle1)],
        [np.sin(angle1), np.cos(angle1)*np.cos(b1), -np.cos(angle1)*np.sin(b1), a1*np.sin(angle1)],
        [0, np.sin(b1), np.cos(b1), d1],
        [0, 0, 0, 1])

and the error i'm getting is:

     .............................................in FinalPosition
[0, np.sin(b1), np.cos(b1), d1], [0, 0, 0, 1])
ValueError: only 2 non-keyword arguments accepted

Not sure what the issue is, could someone explain?

edit: the IDE hightlight over the last two lines says this.

Expected type 'Optional[bool]', got 'List[Union[int | TypeVar('T'), Any]]' instead less... (Ctrl+F1 Alt+T)

This inspection detects type errors in function call expressions. Due to dynamic dispatch and duck typing, this is possible in a limited but useful number of cases. Types of function parameters can be specified in docstrings or in Python 3 function annotations.

Just embrace these lists with a pair of brackets: np.array([ your lists ]). — ForceBru
– ForceBru, Commented Mar 19, 2017 at 20:44
np.array takes ONE list, a dtype, and some key word arguments. Looks like your input is several lists. — hpaulj
– hpaulj, Commented Mar 19, 2017 at 20:46

AnthonyT · Accepted Answer · 2017-03-20 04:14:07Z

15

Answered by @hpaulj and @ForceBru in the comments. Missing a set of [] brackets.

np.array([ your lists ])

answered Mar 20, 2017 at 4:14

AnthonyT

5361 gold badge5 silver badges14 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Numpy/Python Array Value error

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related