[R] Joining data frames
murdoch@dunc@n @end|ng |rom gm@||@com
Wed Jun 30 02:07:46 CEST 2021
On 29/06/2021 8:03 p.m., Matthew McCormack wrote:
> I think, but I'm not sure, that when you use merge it basically
> attaches one data frame to the other. I do not think it matches up
> entries from a particular column in each data frame (and I know
> biologists frequently want to match entries from a particular column in
> each data frame). For that, I think you need a join from the dplyr package.
You think wrong. The Description in the help page is short and clear:
"Merge two data frames by common columns or row names, or do other
versions of database join operations."
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