[R] Querying a data frame or data.table
michael.bedward at gmail.com
Fri Dec 3 09:44:22 CET 2010
Sounds just like the subset function (?)
x <- as.data.frame(matrix(sample(5, 100, rep=TRUE), ncol=10))
subset(x, V1 > 3 & V2 < 5)
On 3 December 2010 19:05, Santosh Srinivas <santosh.srinivas at gmail.com> wrote:
> Hello Group,
> Is there an easy way to query a data.frame or data.table (this is
> fast!) for multiple conditions?
> I don't want to use a SQL kind of statement.
> I am looking for something like a subset with multiple conditions.
> Any tips of the like the binary search methodology used for data.table
> would also help.
> Thanks in advance.
> R-help at r-project.org mailing list
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> and provide commented, minimal, self-contained, reproducible code.
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