[R] joining multiple lists

David Winsemius dwinsemius at comcast.net
Fri Apr 24 04:30:57 CEST 2009


I'm not sure that merge will do what you originally requested. At  
least look at rbind before deciding to go with merge.


On Apr 23, 2009, at 9:30 PM, Daniel Bradley wrote:

> Merge()!
>
> Thanks!
>
> On Fri, Apr 24, 2009 at 11:26 AM, Daniel Bradley <dannyboy477 at gmail.com 
> >wrote:
>
>> Hi!
>>
>> I'm reading and cleaning data from multiple excel spreadsheets.   
>> All the
>> data has the same column names and the natural next step is to join  
>> the
>> lists of data together to make one list for reporting purposes.  I  
>> had
>> thought that c(file1data, file2data) would do the trick but that  
>> seems to
>> append the new columns to the list so I end up with duplicate  
>> column names
>> "col1" "col2" "col3" "col1" col2" "col3" rather than consolidated  
>> column
>> data.  It's obviously a straight forward operation, but damned if I  
>> can find
>> a straight forward explanation on the web.  Any assistance would be  
>> most
>> appreciated!
>>

David Winsemius, MD
Heritage Laboratories
West Hartford, CT



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