Hi:
You've got to convert m to a data frame first:
> m <- data.frame(m)
> m$nms <- rownames(m)
> merge(df, m, by.x = 'col1', by.y = 'row.names')
col1 col2.x col1 col2.y
1 kk 6 8 9
2 kk 3 8 9
HTH,
Dennis
On Wed, May 12, 2010 at 5:03 PM, Yuan Jian <jayuan2...@yahoo.com> wrote:
> Hello,
>
> how to merge a data.frame and a matrix by one column in the data.frame and
> rownames of the matrix?
> df <- data.frame(col1=c("kk","yy","kk"),col2=c(6,4,3))
> > df
> col1 col2
> 1 kk 6
> 2 yy 4
> 3 kk 3
> m<-matrix(c(3,8,56,9), nrow=2, dimnames =
> list(c("aa","kk"),c("col1","col2")))
> > m
> col1 col2
> aa 3 56
> kk 8 9
>
> the result is expected as
> col1.x col2.x col1.y col2.y
> kk 6 8 9
> kk 3 8 9
>
> Yuan Jian
>
>
>
>
>
> [[alternative HTML version deleted]]
>
>
> ______________________________________________
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
>
>
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