Biot_Savart.py; ComplexWarning: Casting complex values to real discards the imaginary part

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Using winpython 2.7.5 64-bit
2. running Test_Biot_Savart_Solenoid.py
3.

What is the expected output? What do you see instead?
Expected to see the positive test result, instead got this error:

Biot_Savart.py:46: ComplexWarning: Casting complex values to real discards the 
imaginary part
  B[p] = B[p] + self.__solveSegment(dSegment, point, myWire.I)

What version of the product are you using? On what operating system?
Winpython(on windows 8 64bit):
Python 2.7.5 (default, May 15 2013, 22:44:16) [MSC v.1500 64 bit (AMD64)] on 
win32
Type "help", "copyright", "credits" or "license" for more information.

Imported NumPy 1.7.1, SciPy 0.12.0, Matplotlib 1.3.0 + guidata 1.6.1, guiqwt 
2.3.1
Type "scientific" for more details.

Please provide any additional information below.

Original issue reported on code.google.com by kevinrav...@gmail.com on 16 Oct 2013 at 9:59