[R] scatter.smooth error

[Peter Flom]

Hello

When I run 

scatter.smooth(jitter(weight), jitter(height2), span = .25, evaluation
= 50, pch = '.')

I get the type of graph I thought I would get, but also a warning.....

k-d tree limited by memory. ncmax= 528 


I always get concerned when there are warnings I don't understand. 
What's a k-d tree?  Is this something to be concerned about?

Thanks

Peter

Peter L. Flom, PhD
Assistant Director, Statistics and Data Analysis Core
Center for Drug Use and HIV Research
National Development and Research Institutes
71 W. 23rd St
www.peterflom.com
New York, NY 10010
(212) 845-4485 (voice)
(917) 438-0894 (fax)