extracting only u or v parameters from surface

[dana]

Hi -
Here is a snapshot of what I get from applying the Isocurve component.
Obviously I am not understanding something simple...

http://grasshopper3d.googlegroups.com/web/isocurve%20problem.jpg?gsc=9SGwjAsAAAA4fOY27sKDfod3JtvUc4p3


Dana