[R] Pivoting a data.frame

[Athula Herath]

Hi,
 
I would like tranform a data.frame which has a structure similar to the:
 
Col1    Col2    Col3
B1      1       0.3
B1      2       0.4
B1      3       0.3
B2      1       0.2
B2      2       0.2
B2      5       0.4
B2      6       0.1
B3      1       0.2
B3      2       0.1
B3      5       0.2
 
[Data Frame 1]
 
Into the following structure (pivoting or transpose is
being used sometimes to describe this, I believe).
  
        B1      B2      B3
1       0.3     0.2     0.2
2       0.4     0.2     0.1
3       0.3     NA      NA
5       NA      0.4     0.2
6       NA      0.1     NA
 
[Data Frame 22]
 
As you see above, the columns of Table 1 is rearrange to
categorise the third column (in terms of Col1 and Col2).
 
I wonder whether anybody here could help me to code this
in S-Plus or R, or point me on the direction how to do
this.
 
 
Many Thanks,
 
Athula.


-- 
Athula Herath, PhD, CEng, MBCS, Biostatistician
Oxford GlycoSciences,10, The Quadrant
Abingdon Science Park, Abingdon, OXON OX14 3YS
Email:Athula.Herath at ogs.co.uk Phone:+44 [0]1235 544202  FAX:+44 [0]1235
554701
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._