Works for me. Can you make a reproducible example [1] the way the
footers of all emails on this list ask you to? The str and dput functions
are very useful tools mentioned in the referenced article.
[1]
http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
On Wed, 14 May 2014, Abhinaba Roy wrote:
Hi Peter,
Thanks for your reply, I tried to convert my data.table into a data.frame
and then merging but I am getting the same error. But when I check the
class of my previously data.table object it returns "data.frame".
Any clue as to why this is happening?
Regards
On Tue, May 13, 2014 at 7:13 PM, peter dalgaard <pda...@gmail.com> wrote:
On 13 May 2014, at 14:34 , Abhinaba Roy <abhinabaro...@gmail.com> wrote:
Hi R-helpers,
I am trying the following code in R
merge(x=Master1,y=demo_dtls,by.x=c("ID_CASE","ts"),by.y=c("ID_CASE","TS_EVENT"))
where,
class(demo_dtls$TS_EVENT)
[1] "POSIXct" "POSIXt"
class(Master1$ts)
[1] "POSIXct" "POSIXt"
and
class(Master1)[1] "data.table" "data.frame"> class(demo_dtls)[1]
"data.frame"
But I am getting the following error
Error in merge.data.table(x = Master1, y = demo_dtls, by.x =
c("ID_CASE", :
Can not match keys in x and y to automatically determine appropriate
`by` parameter. Please set `by` value explicitly.
Why am I getting this error?
You are using merge.data.frame syntax for merge.data.table. The latter
knows about by=, but not by.x= and by.y= (so presumably you need to rename
variables in x or y).
- Peter
Any help will be appreciated
--
Regards
Abhinaba Roy
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PLEASE do read the posting guide
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and provide commented, minimal, self-contained, reproducible code.
--
Peter Dalgaard, Professor
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd....@cbs.dk Priv: pda...@gmail.com
--
Regards
Abhinaba Roy
Statistician
Radix Analytics Pvt. Ltd
Ahmedabad
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