David Moskowitz
2014-May-01 18:14 UTC
[R] How do I create multiple orthogonal designs with the Conjoint package?
Hi, I am trying to create multiple orthogonal designs using the Conjoint package. I have 4 factors with 5 levels in each. library(conjoint) experiment<-expand.grid( price<-c("a1","a2","a3","a4","a5"), tag<-c("b1","b2","b3","b4","b5"), smell<-c("c1","c2","c3","c4","c5"), aroma<-c("f1","f2","f3","f4","f5")) design<-caFactorialDesign(data=experiment,type="fractional") print(design) print(cor(caEncodedDesign(design))) The resulting design from the above code has 22 test combinations.= (listed below). I would like to be able to create multiple designs instead of just having one. Is there a way to do that? Var1 Var2 Var3 Var4 19 a4 b4 c1 f1 40 a5 b3 c2 f1 96 a1 b5 c4 f1 107 a2 b2 c5 f1 148 a3 b5 c1 f2 157 a2 b2 c2 f2 176 a1 b1 c3 f2 195 a5 b4 c3 f2 239 a4 b3 c5 f2 252 a2 b1 c1 f3 299 a4 b5 c2 f3 313 a3 b3 c3 f3 335 a5 b2 c4 f3 366 a1 b4 c5 f3 381 a1 b2 c1 f4 447 a2 b5 c3 f4 469 a4 b4 c4 f4 478 a3 b1 c5 f4 543 a3 b4 c2 f5 559 a4 b2 c3 f5 587 a2 b3 c4 f5 625 a5 b5 c5 f5 [1] "R version 3.0.3 (2014-03-06)" Thank you [[alternative HTML version deleted]]