Hello! I have two matrices of equal dimension ll and lu that I want to do a ks.test on corresponding rows in these matrices (dim(ll) is [1] 101 100). If I do e.g. > ks.test(ll[50,],lu[50,]) just for testing, it displays a lot of numbers, and some more info: [116] -3.000000e-02 -4.000000e-02 -4.000000e-02 -3.000000e-02 -4.000000e-02 [121] -3.000000e-02 -4.000000e-02 -3.000000e-02 -2.000000e-02 -3.000000e-02 [126] -2.000000e-02 -1.000000e-02 -3.469447e-18 -1.000000e-02 -3.469447e-18 Two-sample Kolmogorov-Smirnov test data: ll[50, ] and lu[50, ] D = 0.11, p-value = 0.5806 alternative hypothesis: two.sided Warning message: cannot compute correct p-values with ties in: ks.test(ll[50, ], lu[50, ]) The documentation doesn't discuss the output in any length, so I am wondering what it tells me. The D is the test statistic if I've got it right, and there is a p-value, but if I understand the warning, it isn't exact. Is it possible to qualitatively say how it differs from the exact p-value? And, what is the long vector that is printed? Best, Kjetil -- Kjetil Kjernsmo Graduate astronomy-student Problems worthy of attack University of Oslo, Norway Prove their worth by hitting back E-mail: kjetikj at astro.uio.no - Piet Hein Homepage <URL:http://www.astro.uio.no/~kjetikj/> Webmaster at skepsis.no -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._