In my program which traces out the path of a particle, I get the following error:
Traceback (most recent call last):
File "C:\Users\Felix\Google Drive\Research\particles.py", line 154, in <module>
bfield += b_X(r_p(r,pos[2]))*(r_p(r,pos[2])/r)
*((r-r_p(r,pos[2]))**2+pos[2]**2)^(-1/2)*np.array
([(1-r_p(r,pos[2])/r)*pos[0],(1-r_p(r,pos[2])/r)*pos[1],pos[2]])
TypeError: ufunc 'bitwise_xor' not supported for the input types,
and the inputs could not be safely coerced to any supported types
according to the casting rule ''safe''
I can't seem to find what's going on. I don't have any instances of xor (although I suppose it might be encoded in an if/else statement).
In the offending line you are using a ^
when you want a **
to raise a value to a power. Python interprets this as an xor:
bfield += b_X(r_p(r,pos[2]))*(r_p(r,pos[2])/r)*((r-r_p(r,pos[2]))**2+
pos[2]**2)^(-1/2)*np.array([(1-r_p(r,pos[2])/r)*pos[0],
(1-r_p(r,pos[2])/r)*pos[1],pos[2]])
See:
http://docs.python.org/2/reference/expressions.html#binary-bitwise-operations