[R] (no subject)

[Uwe Ligges]

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.

Best wishes,
Uwe Ligges

> 
> 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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