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.
Newbie Matrix problem refined; Can't convert .csv data to matrix
2 messages · rwatkins@cornerstonelp.com, Peter Dalgaard
<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