[R] rbind with partially overlapping column names

[Ian Gow]

Hi:

This is a bit of a kluge, but works for your test case:

> df2[,setdiff(names(df1),names(df2))] <- NA
> df1[,setdiff(names(df2),names(df1))] <- NA
> df3 <- rbind(df1,df2)
> df3
a b c
1 A B <NA>
2 A B <NA>
3 <NA> b c
4 <NA> b c

-Ian


On 5/15/11 7:41 PM, "Jonathan Flowers" <jonathanmflowers at gmail.com> wrote:

>Hello,
>
>I would like to merge two data frames with partially overlapping column
>names with an rbind-like operation.
>
>For the follow data frames,
>
>df1 <- data.frame(a=c("A","A"),b=c("B","B"))
>df2 <- data.frame(b=c("b","b"),c=c("c","c"))
>
>I would like the output frame to be (with NAs where the frames don't
>overlap)
>
>a      b     c
>A     B     NA
>A     B     NA
>NA   b     c
>NA   b     c
>
>I am familiar with ?merge and ?rbind, but neither seem to offer a means to
>accomplish this.
>
>Thanks in advance.
>
>Jonathan
>
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