[R] How to re-arrange data in table?

[hadley wickham]

On 2/16/07, Rene Braeckman <RMan54 at cox.net> wrote:
> Thanks for the reply. I applied your suggestions on my example and maybe I
> am missing something but these are alternate ways to create the original
> table but not the re-arranged table. The data are not stacked by Analyte. I
> will take a look at the documentation for this library to check whether
> other code can do it.
> Rene

The first example produces:

> cast(dfm, Analyte + result_variable ~ Dose, myStats)
   Analyte result_variable       X200        X400        X600
1      RBV               n  4.0000000   4.0000000   4.0000000
2      RBV            mean 36.3162818  75.9106859 103.3703973
3      RBV              SD  6.2482597  21.9670933  16.6163538
4      RBV              CV 17.2051197  28.9380777  16.0745767
5      RBV          median 34.9785799  70.2915655  96.9303908
6      RBV             min 30.5608993  56.5248140  92.2041812
7      RBV             max 44.7470678 106.5347986 127.4166264
8      TBV               n  4.0000000   4.0000000   4.0000000
9      TBV            mean  3.4647015   8.0472022  11.9026746
10     TBV              SD  0.8035588   0.1214145   0.1639920
11     TBV              CV 23.1927273   1.5087796   1.3777746
12     TBV          median  3.3883839   8.0290574  11.9685917
13     TBV             min  2.5689998   7.9216424  11.6625081
14     TBV             max  4.5130385   8.2090518  12.0110069

Which looks stacked by analyte to me (although not in exactly the same
format as your table).  Perhaps I misunderstand what you want.

Maybe you want:

> cast(dfm, result_variable ~ Dose | Analyte, myStats)
$RBV
  result_variable     X200      X400      X600
1               n  4.00000   4.00000   4.00000
2            mean 36.31628  75.91069 103.37040
3              SD  6.24826  21.96709  16.61635
4              CV 17.20512  28.93808  16.07458
5          median 34.97858  70.29157  96.93039
6             min 30.56090  56.52481  92.20418
7             max 44.74707 106.53480 127.41663

$TBV
  result_variable       X200      X400       X600
1               n  4.0000000 4.0000000  4.0000000
2            mean  3.4647015 8.0472022 11.9026746
3              SD  0.8035588 0.1214145  0.1639920
4              CV 23.1927273 1.5087796  1.3777746
5          median  3.3883839 8.0290574 11.9685917
6             min  2.5689998 7.9216424 11.6625081
7             max  4.5130385 8.2090518 12.0110069


Hadley