The reference below describes the utility of the two-dimensional Kolmogorov-Smirnow (2DKS) test for detecting relationships in bivariate data. If this test has been implemented in R I would love to know about it!
Thanks, jake Garvey, J. E., E.A. Marschall, and R.A. Wright (1998). "From star charts to stoneflies: detecting relationships in continuous bivariate data." Ecology 79(2): 442-447. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.