[R] data frame handling

[Lily_stats]

Dear all, 

I have an xts object , t.xts with 4 columns: "v1" "DD1" "v2" "DD2" and
created a data frame :

t <- as.data.frame(t.xts)

I would like to extract data and create a new data frame for when the values
in column DD1 falls between 0 and 30 and extract the corresponding v1 value.

How can I do this?

Thanks.



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