[R] Subset and order

[Noah Silverman]

Hello,

I have a data frame with several columns.

I'd like to select some subset *and* order by another field at the same time.  

Example:

a       b       c
1       2       3
3       3       4
2       4       5
1       3       4
etc…


I want to select all rows where b=3 and then order by a.

To subset is easy:  x[x$b==3,]
To order is easy: x[order(x$a),]

Is there a way to do both in a single efficient statement?

Thanks,



--
Noah Silverman, M.S., C.Phil
UCLA Department of Statistics
8117 Math Sciences Building
Los Angeles, CA 90095




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