Questions for manipulating datasets in R e.g. sorting and matching
hi steffi, try DataSort<-Data[order(Data[,5],Data[,6],Data[,8]),1:14] and for further details ?order. For matching try ?merge. Best Regards, Christian Stefanie von Felten, IPW&IfU schrieb:
Hello everyone, I want to sort a dataset in R, using multiple columns as sorting criteria. I know I can sort a dataset "Data" with 14 columns using one column (the fifth), by typing: DataSort<-Data[order(Data[,5]),1:14] But how can the dataset be sorted by column 5, then by 6, then by 8? Another question is, how two datasets can be matched by a column present in both of them? Steffi
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