The following is in response to a question on the R-Help list.
Consider two datasets:
reported <-
structure(list(Product = structure(c(1L, 1L, 1L, 1L, 2L, 2L,
3L, 4L, 5L, 5L), .Label = c("Cocoa", "Coffee C", "GC", "Sugar No 11",
"ZS"), class = "factor"), Price = c(2331, 2356, 2440, 2450, 204.55,
205.45, 17792, 24.81, 1273.5, 1276.25), Nbr.Lots = c(-61L, -61L,
5L, 1L, 40L, 40L, -1L, -1L, -1L, 1L)), .Names = c("Product",
"Price", "Nbr.Lots"), row.names = c(1L, 2L, 3L, 4L, 6L, 7L, 5L,
10L, 8L, 9L), class = "data.frame")
exportfile
Two possible solutions:
A.
m <- rbind(reported, exportfile)
m1 <- m[duplicated(m),]
res <- m[is.na(match(m$key, m1$key)),]
B.
exportfile$key