[R] Newbie Matrix problem refined; Can't convert .csv data to matrix

[Peter Dalgaard BSA]

<rwatkins at cornerstonelp.com> writes:

> Thanks to all for your previous help.  I see now that my problem is
> converting my .csv file of data into a matrix.  My example is a (3x3) matrix
> with a "header" row (that doesn't contain numerics).
> 
> Thanks again for your time and gracious consideration.

I believe that was actually answered in at least one of the replies
you already got, but to reiterate: Use as.matrix to coerce the data
frame returned by read.csv to a matrix. As in:

> A <- as.matrix(read.csv(stdin()))
0: A,B,C
1: 1,2,3
2: 4,5,6
3: 7,8,9
4:
> A%*%A

      A   B   C
  1  30  36  42
  2  66  81  96
  3 102 126 150


-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907