Beaulieu.Jake at epamail.epa.gov
2011-Oct-09 17:46 UTC
[R] two-dimensional Kolmogorov-Smirnow (2DKS) test
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]]
On Oct 9, 2011, at 1:46 PM, Beaulieu.Jake at epamail.epa.gov wrote:> 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! >I have not been able to find an R implementation. (Tried RSiteSearch and RSeek with "2d kolmogorov" and pursued promising links and citations. This 2005 article suggests that it is not a simple (or even a well-defined) problem: http://bura.brunel.ac.uk/bitstream/2438/1166/1/acat2007.pdf This effort at a parallelized solution reports little improvement, perhaps supporting the Lopes, el al conclusion that the Cooks algorithm is not O(n*log(n) after all. And this is a page with a link to some Matlab code: http://www.subcortex.net/research/code/testing-for-differences-in-multidimensional-distributions> 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. >-- David Winsemius, MD West Hartford, CT
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