[R] compare two data frames with same columns names but of different dimensions

[Gaurav Sood]

m <- rbind(reported, exportfile)
m1 <- m[duplicated(m),]
m[is.na(match(m$key, m1$key)),]

On Mon, Feb 27, 2012 at 9:46 AM, Arnaud Gaboury
<arnaud.gaboury at a2ct2.com> wrote:
> Dear List,
>
> I want to compare and return the rows which are NOT in the two data frames. Classic methods don't work as the df have NOT the same dimensions.
>
>
> Here are one example of my df:
>
> 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 <-
> structure(list(Product = c("Cocoa", "Cocoa", "Cocoa", "Coffee C",
> "Coffee C", "GC", "Sugar No 11", "ZS", "ZS"), Price = c(2331,
> 2356, 2440, 204.55, 205.45, 17792, 24.81, 1273.5, 1276.25), Nbr.Lots = c(-61,
> -61, 6, 40, 40, -1, -1, -1, 1)), .Names = c("Product", "Price",
> "Nbr.Lots"), row.names = c(NA, 9L), class = "data.frame")
>
> As you can see, they have same column names.
> My idea was to merge these two df when passing as argument "not to take into account duplicate rows", so I will get one df with rows which are not in both df.
> Is it possible? How to do it?
>
> TY for any help.
>
>
> Arnaud Gaboury
>
> A2CT2 Ltd.
>
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