Tnx all for the helpful suggestions. Life is good. Happy holidays Bruce
-- Bruce W. Miller, PhD. Neotropical bat risk assessments Conservation Fellow - Wildlife Conservation Society If we lose the bats, we may lose much of the tropical vegetation and the lungs of the planet Using acoustic sampling to identify and map species distributions and pioneering acoustic tools for ecology and conservation of bats for >25 years. Key projects include providing free interactive identification keys and call fact sheets for the vocal signatures of New World Bats ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.