dear all, thanks it helped a lot, the problem was that I should treat my data as set of species, not samples, so as output I get 4087*4087 matrix, which afterwards will be applied for PCO,
the thing was, that in cause of big number of values, programm do not show all computed distances and even lower triangle is not seen, finally I applied >distm<-dist(hell.dframe,diag=TRUE,upper=TRUE) and it worked thanks for kind explanation! -- View this message in context: http://r.789695.n4.nabble.com/exploring-dist-tp3387187p3393170.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.