Generate jpg files using line length (pixels) and orientation (degrees)

[Dan Sommers]

> Unfortunately getting a new error.
> 
> Traceback (most recent call last):
>   File "C:\Users\Owner\Desktop\Stimuli Generation\Coordinates\Generate_w corr.py", line 68, in <module>
>     makeimg(length, orientation)
>   File "C:\Users\Owner\Desktop\Stimuli Generation\Coordinates\Generate_w corr.py", line 40, in makeimg
>     orientation = orientation % 180
> TypeError: not all arguments converted during string formatting
>>>>

My guess is that orientation contains a string that doesn't contain a '%'
character:

Python 3.4.2 (default, Oct  8 2014, 10:45:20) 
[GCC 4.9.1] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 'this is a string' % 180
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: not all arguments converted during string formatting