[R] Questions for manipulating datasets in R e.g. sorting and matching

[Christian Montel]

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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Dr. Christian Montel
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