Querying a data frame or data.table
Sounds just like the subset function (?) x <- as.data.frame(matrix(sample(5, 100, rep=TRUE), ncol=10)) subset(x, V1 > 3 & V2 < 5) Michael
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. S
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