You can also use the polar plot VIs: http://digital.ni.com/public.nsf/websearch/9CEC8B2C1E67039586256DEF006F9A0E?OpenDocument
You can also use the polar plot VIs: http://digital.ni.com/public.nsf/websearch/9CEC8B2C1E67039586256DEF006F9A0E?OpenDocument