Archimedean Spirals script, Chinese YinYang

 From:  bemfarmer
6906.2 In reply to 6906.1 
Another perspective:

http://www.researchgate.net/publication/221922302_A_Geomedical_Approach_to_Chinese_Medicine_The_Origin_of_the_Yin-Yang_Symbol

- Brian

The following does not work for negative b:
ArchimedeanSpiral:
_FxGraph3D a*pow(v,(1/b))*cos(v)/PI;c*pow(v,(1/b))*sin(v)/PI;0;0;1;0;6.283185307179586;0;50;6;1;6;U