[R] dataframe conversion

[Uwe Ligges]

Pieter Provoost wrote:
> The data structures in R are still very puzzling to me. Can anyone tell 
> me how I can easily convert these two dataframes to one single dataframe 
> with two columns (mean and sd) with 7 rows?
> 
>  > meanprofile
>        V1       V2       V3       V4       V5       V6       V7
> 2292.001 2178.620 1654.310 1784.004 1160.052 1142.061 1046.675
>  > sdprofile
>        V1       V2       V3       V4       V5       V6       V7
> 310.6714 347.2072 197.2464 532.3916 161.2955 227.3634 108.5017


This is quite an unusual task, because you won't have data structure in 
a data.frame most of the times. In particular, you cannot make a row 
from a data.frame to a column generally.

In this case, we just convert the data.frame to matrix. I think most 
easily you can write:

   dat <- t(rbind(meanprofile, sdprofile))
   colnames(dat) <- c("meanprofile", "sdprofile")

Uwe Ligges



> Thanks!
> Pieter
> 
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