Can I use lm() to fit more than one response and more than one variables in single expression

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  Dear All,
Can I use lm() to fit more than one response in
  single expression. e.g data is a matrix of these
variables
R1 R2 R3  X1 X2 X3
1 2 1 1 2 3

  Now i wnat to fit
R1~X1
R2~X2
R3~X3

in turn, and I don't want to do it use loops

of couse it it easy to make it using loops,but the proceed  is very slow since the data is very big

Can't anybody give me some tips or help, my eamil: guoshicheng2005 at yeah.net
No. You will have to iterate in some way. How big can the data be that 
this is slow? Anyway, since there may be overhead by calling it via the 
formula interface,. you can directly fit using an explicitly given 
Design matrix in lm.fit().

Best,
Uwe Ligges

2011-10-13

Best wishes
Yours Alxe

--
Ministry of Education Key Laboratory of Contemporary Anthropology
School of Life Sciences, Fudan University
220 Handan Road
Shanghai, China 200433
Phone:15216760764
E-mail: guoshicheng2005 at yeah.net
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