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Hello Everyone, I would like to know if I can call one of the columns of a list, to use it as a variable in a function. Thanks in advance for any advice! Jana -- Jana Makedonska, B.Sc. Biology, Universite Paul Sabatier Toulouse III M.Sc. Paleontology, Paleobiology and Phylogeny, Universite de Montpellier II Ph.D. candidate in Physical Anthropology and Part-time lecturer Department of Anthropology College of Arts & Sciences State University of New York at Albany 1400 Washington Avenue 12222 Albany, NY Office phone: 518-442-4699 http://electricsongs.acade...

...how to specify a different line pattern for each ellipse. I can only modify the pattern for all ellipses with the "lty" argument. Any help will be highly appreciated. Thanks in advance! Jana -- Jana Makedonska, B.Sc. Biology, Universite Paul Sabatier Toulouse III M.Sc. Paleontology, Paleobiology and Phylogeny, Universite de Montpellier II Ph.D. candidate in Physical Anthropology and Part-time lecturer Department of Anthropology College of Arts & Sciences State University of New York at Albany 1400 Washington Avenue 12222 Albany, NY Office phone: 518-442-4699 http://electricsongs.acade...

Here's a question for ecologists on the r-help list-- I'm addressing this to ecologists in particular because they're most likely to be familiar with the equation in question but I'll be happy to discuss the problem with anyone who's willing to take a whack at it. I'm trying to write a function to calculate the large sample variance of species richness estimates by