Origin Ver. and Service Release: OriginPro 9.1 and Sr2 b271(academic) Operating System: Win.7
I have a set of measurements of (r,theta,z) values taken at angles from theta = -120 to theta = 120 degrees. I am plotting a figure using Polar Contour (Plot--> Contour --> Polor Contour r(x) Theta(y)). The output figure by Origin is like below http://www.originlab.com/ftp/forum_and_kbase/Images/geo1.pdf[/url] .
Between 120 and -120 degrees very good, but it seems pointless lines out of 120 and -120 degrees . I do not have any function data out of 120 and -120 .