[R] (no subject)
ligges at statistik.tu-dortmund.de
Mon Feb 16 13:15:47 CET 2009
Vincze Orsolya wrote:
> There are three columns, I was just careless.
> I succeed to merge the two tables. But:
> 1) in the first table there were rows, which were not present in the second
> table, these rows were deleted from the merged table too, but I need them.
> 2) If i want to import from the second table just a certain column, not all
> that is missing from the first, how can i do that?
> 3) How can I save the generated table?
> Sorry about the banal questions.... I'm beginner.
> And thanks for the help...
> Have a nice day
Homework? Then please ask you course material or teacher.
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
> 2009/2/15 Peter Dalgaard <p.dalgaard at biostat.ku.dk>
>> Vincze Orsolya wrote:
>>> Dear all,I had just started to learn R. So my question may sound a bit
>>> stupid for you.
>>> Is that possible to match and merge two tables in R? I mean I have two
>>> tables, in the first I have two columns: RING NUMBER, WEIGHT and CAPTURE
>> Err, ... for large values of "two"? Or is one of the three a rowname?
>> DATE, in the second RING NUMBER, SEX and CAPTURE DATE.
>>> 1) First I want to see, if to the ring numbers are the same, the capture
>>> dates are too?
>>> 2) And second if ring numbers are the same, to import the sex from the
>>> second table in the first.
>>> Is that possible?
>> Yes. It's a job for merge()
>> O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
>> c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
>> (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
>> ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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