> PS: Just a related side-question: Why is merge_all not included in the
> "newer" package reshape2 as this is considered to be a reboot of the
> reshape package?
Because it doesn't work very well, as you've discovered.
There's an equivalent join_all in plyr.
Hadley
--
Chief Scientist, RStudio
Hi Rui,
thank you so far for your answer...
...as i found these other problems also myself, I decided to go
for a looping apporach with the base merge command and always
add a new dataframe to the old one (growing dataframe).
/johannes
On Fri, Jan 11, 2013 at 1:26 PM, Rui Barradas wrote:
> Hell
Hello,
To "solve" the problem you can use all.x and all.y but I think there are
other problems with merge_all, in the example below it doesn't include
df2$Y in the result df.
df1 <- data.frame(col1=1:10, col2=11:20, col3=21:30, X = rnorm(10))
df2 <- data.frame(col1=1:10, col2=11:20, col3=21:
Hi,
I'd like to merge mutliple dataframes from a list of dataframes by some common
columns. The approach for simply merging 2 dataframes is working with:
merge(df1,df2,by=c("col1","col2","col3"),all=TRUE)
For mutliple dataframes in a list I try to use the merge_all command
from the package resha
4 matches
Mail list logo
