[R] subset() multiple arguments

[Peter Dalgaard]

stephen sefick wrote:
> This is what I would like to do and it works just fine.  Is there a way to
> shorten this code so I don't have to subset a subset of a subset?
>
> d<-subset(subset(subset(subset(x, River.Mile<=202), River.Mile>3),
> Lagrangian=="Yes"), EventType=="Regular")
>
> Stephen
>   
"&" is your friend:

d<-subset(x, River.Mile<=202 & River.Mile>3 &
             Lagrangian=="Yes" & EventType=="Regular")




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