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.
