This function uses treatment combinations in standard (Yates') order to generate factors canonical format for factorial designs with only two levels.
treatcomb2factors(data)n x 2 data frame containing the experimental data.
the updated data with factors in the canonical format
library(planex)
data(refrigerantes2k)
head(refrigerantes2k)
#> comb_trat pontuacao
#> 1 (1) 159
#> 2 a 168
#> 3 b 158
#> 4 ab 166
#> 5 c 175
#> 6 ac 179
refrigerantes2k <- treatcomb2factors(refrigerantes2k)
refrigerantes2k
#> comb_trat pontuacao A B C D
#> 1 (1) 159 -1 -1 -1 -1
#> 2 a 168 1 -1 -1 -1
#> 3 b 158 -1 1 -1 -1
#> 4 ab 166 1 1 -1 -1
#> 5 c 175 -1 -1 1 -1
#> 6 ac 179 1 -1 1 -1
#> 7 bc 173 -1 1 1 -1
#> 8 abc 179 1 1 1 -1
#> 9 d 164 -1 -1 -1 1
#> 10 ad 187 1 -1 -1 1
#> 11 bd 163 -1 1 -1 1
#> 12 abd 185 1 1 -1 1
#> 13 cd 168 -1 -1 1 1
#> 14 acd 197 1 -1 1 1
#> 15 bcd 170 -1 1 1 1
#> 16 abcd 194 1 1 1 1
#> 17 (1) 163 -1 -1 -1 -1
#> 18 a 175 1 -1 -1 -1
#> 19 b 163 -1 1 -1 -1
#> 20 ab 168 1 1 -1 -1
#> 21 c 178 -1 -1 1 -1
#> 22 ac 183 1 -1 1 -1
#> 23 bc 168 -1 1 1 -1
#> 24 abc 182 1 1 1 -1
#> 25 d 159 -1 -1 -1 1
#> 26 ad 189 1 -1 -1 1
#> 27 bd 159 -1 1 -1 1
#> 28 abd 191 1 1 -1 1
#> 29 cd 174 -1 -1 1 1
#> 30 acd 199 1 -1 1 1
#> 31 bcd 174 -1 1 1 1
#> 32 abcd 198 1 1 1 1