Hello, This is your starting point:
http://cran.r-project.org/web/views/ExperimentalDesign.html Best regards, Carlos J. Gil Bellosta http://www.datanalytics.com On Thu, 2009-09-03 at 17:38 -0700, B_miner wrote: > Hello! > > > This is not a topic I am well versed in but required to become well versed > in...I welcome any assistance! > > Using R, I want to create an optimal design for an experiment. I'll be > analyzing the results with logistic regression or some generalized linear > model. I am thinking that the algdesign package can help (but no idea where > to start?). > > I'm presenting an example here that I have seen the answer to (in SAS) in > order to make sure I would have gotten it *right*. > > There are 5 factors: 4 are quantitative with three levels each and 1 is > qualitative with two levels. > > Factor and levels: > > Intro: 0, 1.99, 2.99 > Duration: 6, 9 ,12 > GOTO: 3.99, 4.99, 5.99 > Fee: 0, 15, 45 > Color: Red, White > > > In order to screen these factors, I would want to get a design where I could > evaluate all main effects, all first order interactions and the squared > terms of Intro, Duration, GOTO and FEE (for example Intro*Intro). > > Looking for the D-optimal design. > > Is this something that R can provide? > > > These are, according to the SAS paper I read the following: > Obs intro duration goto fee color > 1 0.00 6 3.99 0 WHITE > 2 0.00 6 3.99 45 RED > 3 0.00 6 5.99 0 RED > 4 0.00 6 5.99 45 WHITE > 5 0.00 9 3.99 45 RED > 6 0.00 9 4.99 15 WHITE > 7 0.00 9 5.99 0 RED > 8 0.00 12 3.99 0 RED > 9 0.00 12 3.99 45 WHITE > 10 0.00 12 5.99 0 WHITE > 11 0.00 12 5.99 45 RED > 12 0.00 12 5.99 45 WHITE > 13 1.99 6 3.99 15 RED > 14 1.99 6 4.99 45 WHITE > 15 1.99 6 5.99 0 WHITE > 16 1.99 9 5.99 45 RED > 17 1.99 12 3.99 0 WHITE > 18 1.99 12 5.99 15 RED > 19 2.99 6 3.99 0 WHITE > 20 2.99 6 3.99 45 WHITE > 21 2.99 6 4.99 0 RED > 22 2.99 6 5.99 15 WHITE > 23 2.99 6 5.99 45 RED > 24 2.99 9 3.99 0 RED > 25 2.99 12 3.99 15 WHITE > 26 2.99 12 3.99 45 RED > 27 2.99 12 4.99 0 WHITE > 28 2.99 12 4.99 45 RED > 29 2.99 12 5.99 0 RED > 30 2.99 12 5.99 45 WHITE > > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
