[R] Adding data.frames together

Joris DeWolf Joris.DeWolf at cropdesign.com
Wed Mar 10 08:58:00 CET 2004


check rbind
Joris

John Sweval wrote:

>I have a series of data frames that are identical structurally, i.e. -
>made with the same code, but I need to add them together so that they
>become one, longer, data frame, i.e. - each of the slot vectors are
>increased in length by the length of the added data frame vectors.
>
>So if I have df1 with a slot A so that length(df1$A) = 100 and I have
>df2 with a slot A so that length(df2$A)=200 then I need a method to
>create df3 its slot A is the df1$A plus df2$A such that length(df3$A) =
>300.
>
>It does not appear that if you use data.frame to join two data frames it
>just adds the slots of both sources to the destination data frame and
>that is not what I want.
>
>In my finally solution, I need to do this with multiple data.frames that
>slot-wise are identical, but each slot length is different between data
>frames.
>
>Seems like there should be an easy solution, but I just have not
>stumbled across it in the documentation.
>
>Thanks,
>John C. Sweval
>  Database Architect
>  Illumigen Biosciences, Inc.
>    Email: jsweval at illumigen.com
>    Phone: 206-378-0400
>    Fax: 206-378-0408
>
>
>	[[alternative HTML version deleted]]
>
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>

-- 

====================================================================== 
Joris De Wolf
CropDesign N.V. 
Plant Evaluation Group
Technologiepark 3 
B-9052 Zwijnaarde 
Belgium 
Tel. : +32 9 242 91 55
Fax  : +32 9 241 91 73
====================================================================== 


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