Subsetting based on values of a different data frame in R

Question

I want to subset data if every value in the row is greater than the respective row in a different data frame. I also need to skip some top rows. These previous questions did

Answer 1

requisite data.table solution:

library(data.table)

# just to preserve the order, non-alphabetically
idsA <- factor(rownames(A), levels=rownames(A))
idsB <- factor(rownames(B), levels=rownames(B))

# convert to data.table with id
ADT <- data.table(id=idsA, A, key="id")
BDT <- data.table(id=idsB, B, key="id")

# filter as needed
ADT[BDT][name1 > name1.1 & name2 > name2.1, list(id, name1, name2)]