Dear all,
Possibly a rudimentary question, however any help is greatly appreciated.  I
am sorting a large matrix into an array of dim(p(i),q,3).  I put each entry
into a corresponding matrix (1 of the 3) based on some criteria.  I figure
this will assist me in condensing code as I can loop through the 3rd
dimension of the array instead of generating 3 separate matrices and using
the same block of code 3 times.  My question is how to get the colnames of
the 3 nested matrices in the array to match the colnames of the data
matrix.  In other words...

DATA:
   Exp   region   Qty   Ct  ...q
1   S      CB     3.55  2.15  .
2   S      TG     4.16  2.18  .
3   C      OO     2.36  3.65  .
4   C   .           .         .
.   .     .           .       .
.   .       .           .     .
.   .         .           .   .
p   ...........................



ARRAY
1
   [,1]   [,2]    [,3] [,4]...q
1   SOME DATA WILL FILL THIS   .
2   .  .              .        .
3   .   .              .       .
4   .    .              .      .
.   .     .              .     .
.   .      .              .    .
.   .       .              .   .
P(1) ...........................

2
   [,1]   [,2]    [,3] [,4]...q
1   SOME DATA WILL FILL THIS   .
2   .  .              .        .
3   .   .              .       .
4   .    .              .      .
.   .     .              .     .
.   .      .              .    .
.   .       .              .   .
P(2) ...........................
3
   [,1]   [,2]    [,3] [,4]...q
1   SOME DATA WILL FILL THIS   .
2   .  .              .        .
3   .   .              .       .
4   .    .              .      .
.   .     .              .     .
.   .      .              .    .
.   .       .              .   .
P(3) ...........................

Again, how to get those [,1], [,2]... to read (and operate) in the same
fashion as the column names in the data matrix?  Also, am I interpreting the
dimensions of the array incorrectly?  Please feel free to post any helpful
links on the subject, as I have found "dimnames" and "array" in the R-help
documentation unhelpful.  Any help is greatly appreciated.

Dave Mitchell
Undergraduate: Statistics and Mathematics,
University of Illinois, Urbana-Champaign

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