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Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Feb 5, 2019 at 10:04 AM sasa kosanic <sasa.kosa...@gmail.com> wrote: > Dear All, > > I would like to merge two data sets however I am doing something wrong... > 1 data set contains 2 columns of 'species occurrence'(1 column) in Germany > and 'species names' (2 column). > and the second one names of 'Red list species'(1 column) and 'species > status' (2 column). > so I would like to merge Red list species with species names from the first > table and to sign the species status > I have tried with merge function but got this an error:" 'by' must specify > a uniquely valid column" > I also tried with the function left_join, however no success. > > Also columns in two data sets are different in size. 1 table has 7189 rows > and 2 table just 426 rows as we do not have much Red list Species. > > I would appreciate your help. > > Kind regards, > Sasha > > > Dr Sasha Kosanic > Ecology Lab (Biology Department) > Room M842 > University of Konstanz > Universitätsstraße 10 > D-78464 Konstanz > Phone: +49 7531 883321 & +49 (0)175 9172503 > > http://cms.uni-konstanz.de/vkleunen/ > https://tinyurl.com/y8u5wyoj > https://tinyurl.com/cgec6tu > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.
