search for: sociobiolog

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Using merge
2011 Feb 11
1
Using merge
...case? Look: data1<-data.frame(journal=c("Ecology","Environmental Entomology","Neotropical Biology And Conservation")) data2<-data.frame(journal=c("Ecology","Environmental Entomology","Neotropical Biology and Conservation","Sociobiology"),qualis=c("A1","A2","B1","B5")) merge(data1,data2) > merge(data1,data2) journal qualis 1 Ecology A1 2 Environmental Entomology A2 the expected result is: journal...