[R] Working with text data/text operators

[Dieter Menne]

Mihai.Mirauta wrote:
> 
> 
> Could someone tell me, how can I select from a dataframe only those
> columns whose names contain a certain text?
> 
> For example, if the column names are
> "Bond1.Creditclass","Bond1.Price","Bond2.Creditclass","Bond2.Price", how
> do I select only the columns corresponding to Bond1?
> 

See Wacek's 

https://stat.ethz.ch/pipermail/r-help/2009-February/187462.html

Dieter

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