caEncodedDesign: Function caEncodedDesign encodes full or fractional factorial...

In conjoint: An Implementation of Conjoint Analysis Method

Description

Function caEncodedDesign encodes full or fractional factorial design. Function converts design of experiment to matrix of profiles.

Usage

caEncodedDesign(design)

Arguments

design

design of experiment returned by caFactorialDesign function

Author(s)

Andrzej Bak [e-mail],

Tomasz Bartlomowicz [e-mail]

Department of Econometrics and Computer Science, Wroclaw University of Economics, Poland http://keii.ue.wroc.pl/conjoint

References

Bak A., Bartlomowicz T. (2012), Conjoint analysis method and its implementation in conjoint R package, [In:] Pociecha J., Decker R. (Eds.), Data analysis methods and its applications, C.H.Beck, Warszawa, p.239-248.

Bak A. (2009), Analiza Conjoint [Conjoint Analysis], [In:] Walesiak M., Gatnar E. (Eds.), Statystyczna analiza danych z wykorzystaniem programu R [Statistical Data Analysis using R], Wydawnictwo Naukowe PWN, Warszawa, p. 283-317.

Green P.E., Srinivasan V. (1978), Conjoint Analysis in Consumer Research: Issues and Outlook, "Journal of Consumer Research", September, 5, p. 103-123.

SPSS 6.1 Categories (1994), SPSS Inc., Chicago.

See Also

caFactorialDesign and caRecreatedDesign

Examples

#Example 1
library(conjoint)
experiment<-expand.grid(
price=c("low","medium","high"),
variety=c("black","green","red"),
kind=c("bags","granulated","leafy"),
aroma=c("yes","no"))
design=caFactorialDesign(data=experiment,type="orthogonal")
print(design)
code=caEncodedDesign(design)
print(code)
print(cor(code))
write.csv2(design,file="orthogonal_factorial_design.csv",row.names=FALSE)
write.csv2(code,file="encoded_orthogonal_factorial_design.csv",row.names=FALSE)

Example output

This is package 'modeest' written by P. PONCET.
For a complete list of functions, use 'library(help = "modeest")' or 'help.start()'.

Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: 'rgl_init' failed, running with rgl.useNULL = TRUE 
3: .onUnload failed in unloadNamespace() for 'rgl', details:
  call: fun(...)
  error: object 'rgl_quit' not found 
    price variety       kind aroma
4     low   green       bags   yes
9    high     red       bags   yes
10    low   black granulated   yes
17 medium     red granulated   yes
21   high   black      leafy   yes
23 medium   green      leafy   yes
29 medium   black       bags    no
42   high   green granulated    no
52    low     red      leafy    no
   price variety kind aroma
4      1       2    1     1
9      3       3    1     1
10     1       1    2     1
17     2       3    2     1
21     3       1    3     1
23     2       2    3     1
29     2       1    1     2
42     3       2    2     2
52     1       3    3     2
        price variety kind aroma
price       1       0    0     0
variety     0       1    0     0
kind        0       0    1     0
aroma       0       0    0     1

conjoint documentation built on May 1, 2019, 8:05 p.m.