Create effect-coded columns, supporting tidyselect syntax to process multiple columns simultaneously.

effect_coding(data, cols, factor = FALSE, ref_group = NULL)

Arguments

data

A data.frame or a data.frame extension (e.g. a tibble).

cols

Columns that need to be effect-coded. See `dplyr::dplyr_tidy_select` for available options.

factor

The default is `FALSE`. If factor is set to `TRUE`, this function returns a tibble with effect-coded factors. If factor is set to `FALSE`, this function returns a tibble with effect-coded columns.

ref_group

Reference group. Optional.

Value

An object of the same type as .data. The output has the following properties: 1. Columns from .data will be preserved. 2. Columns that are effect-coded.

Examples

effect_coding(iris,Species)
#> Joining with `by = join_by(Species)`
#>     Sepal.Length Sepal.Width Petal.Length Petal.Width    Species
#> 1            5.1         3.5          1.4         0.2     setosa
#> 2            4.9         3.0          1.4         0.2     setosa
#> 3            4.7         3.2          1.3         0.2     setosa
#> 4            4.6         3.1          1.5         0.2     setosa
#> 5            5.0         3.6          1.4         0.2     setosa
#> 6            5.4         3.9          1.7         0.4     setosa
#> 7            4.6         3.4          1.4         0.3     setosa
#> 8            5.0         3.4          1.5         0.2     setosa
#> 9            4.4         2.9          1.4         0.2     setosa
#> 10           4.9         3.1          1.5         0.1     setosa
#> 11           5.4         3.7          1.5         0.2     setosa
#> 12           4.8         3.4          1.6         0.2     setosa
#> 13           4.8         3.0          1.4         0.1     setosa
#> 14           4.3         3.0          1.1         0.1     setosa
#> 15           5.8         4.0          1.2         0.2     setosa
#> 16           5.7         4.4          1.5         0.4     setosa
#> 17           5.4         3.9          1.3         0.4     setosa
#> 18           5.1         3.5          1.4         0.3     setosa
#> 19           5.7         3.8          1.7         0.3     setosa
#> 20           5.1         3.8          1.5         0.3     setosa
#> 21           5.4         3.4          1.7         0.2     setosa
#> 22           5.1         3.7          1.5         0.4     setosa
#> 23           4.6         3.6          1.0         0.2     setosa
#> 24           5.1         3.3          1.7         0.5     setosa
#> 25           4.8         3.4          1.9         0.2     setosa
#> 26           5.0         3.0          1.6         0.2     setosa
#> 27           5.0         3.4          1.6         0.4     setosa
#> 28           5.2         3.5          1.5         0.2     setosa
#> 29           5.2         3.4          1.4         0.2     setosa
#> 30           4.7         3.2          1.6         0.2     setosa
#> 31           4.8         3.1          1.6         0.2     setosa
#> 32           5.4         3.4          1.5         0.4     setosa
#> 33           5.2         4.1          1.5         0.1     setosa
#> 34           5.5         4.2          1.4         0.2     setosa
#> 35           4.9         3.1          1.5         0.2     setosa
#> 36           5.0         3.2          1.2         0.2     setosa
#> 37           5.5         3.5          1.3         0.2     setosa
#> 38           4.9         3.6          1.4         0.1     setosa
#> 39           4.4         3.0          1.3         0.2     setosa
#> 40           5.1         3.4          1.5         0.2     setosa
#> 41           5.0         3.5          1.3         0.3     setosa
#> 42           4.5         2.3          1.3         0.3     setosa
#> 43           4.4         3.2          1.3         0.2     setosa
#> 44           5.0         3.5          1.6         0.6     setosa
#> 45           5.1         3.8          1.9         0.4     setosa
#> 46           4.8         3.0          1.4         0.3     setosa
#> 47           5.1         3.8          1.6         0.2     setosa
#> 48           4.6         3.2          1.4         0.2     setosa
#> 49           5.3         3.7          1.5         0.2     setosa
#> 50           5.0         3.3          1.4         0.2     setosa
#> 51           7.0         3.2          4.7         1.4 versicolor
#> 52           6.4         3.2          4.5         1.5 versicolor
#> 53           6.9         3.1          4.9         1.5 versicolor
#> 54           5.5         2.3          4.0         1.3 versicolor
#> 55           6.5         2.8          4.6         1.5 versicolor
#> 56           5.7         2.8          4.5         1.3 versicolor
#> 57           6.3         3.3          4.7         1.6 versicolor
#> 58           4.9         2.4          3.3         1.0 versicolor
#> 59           6.6         2.9          4.6         1.3 versicolor
#> 60           5.2         2.7          3.9         1.4 versicolor
#> 61           5.0         2.0          3.5         1.0 versicolor
#> 62           5.9         3.0          4.2         1.5 versicolor
#> 63           6.0         2.2          4.0         1.0 versicolor
#> 64           6.1         2.9          4.7         1.4 versicolor
#> 65           5.6         2.9          3.6         1.3 versicolor
#> 66           6.7         3.1          4.4         1.4 versicolor
#> 67           5.6         3.0          4.5         1.5 versicolor
#> 68           5.8         2.7          4.1         1.0 versicolor
#> 69           6.2         2.2          4.5         1.5 versicolor
#> 70           5.6         2.5          3.9         1.1 versicolor
#> 71           5.9         3.2          4.8         1.8 versicolor
#> 72           6.1         2.8          4.0         1.3 versicolor
#> 73           6.3         2.5          4.9         1.5 versicolor
#> 74           6.1         2.8          4.7         1.2 versicolor
#> 75           6.4         2.9          4.3         1.3 versicolor
#> 76           6.6         3.0          4.4         1.4 versicolor
#> 77           6.8         2.8          4.8         1.4 versicolor
#> 78           6.7         3.0          5.0         1.7 versicolor
#> 79           6.0         2.9          4.5         1.5 versicolor
#> 80           5.7         2.6          3.5         1.0 versicolor
#> 81           5.5         2.4          3.8         1.1 versicolor
#> 82           5.5         2.4          3.7         1.0 versicolor
#> 83           5.8         2.7          3.9         1.2 versicolor
#> 84           6.0         2.7          5.1         1.6 versicolor
#> 85           5.4         3.0          4.5         1.5 versicolor
#> 86           6.0         3.4          4.5         1.6 versicolor
#> 87           6.7         3.1          4.7         1.5 versicolor
#> 88           6.3         2.3          4.4         1.3 versicolor
#> 89           5.6         3.0          4.1         1.3 versicolor
#> 90           5.5         2.5          4.0         1.3 versicolor
#> 91           5.5         2.6          4.4         1.2 versicolor
#> 92           6.1         3.0          4.6         1.4 versicolor
#> 93           5.8         2.6          4.0         1.2 versicolor
#> 94           5.0         2.3          3.3         1.0 versicolor
#> 95           5.6         2.7          4.2         1.3 versicolor
#> 96           5.7         3.0          4.2         1.2 versicolor
#> 97           5.7         2.9          4.2         1.3 versicolor
#> 98           6.2         2.9          4.3         1.3 versicolor
#> 99           5.1         2.5          3.0         1.1 versicolor
#> 100          5.7         2.8          4.1         1.3 versicolor
#> 101          6.3         3.3          6.0         2.5  virginica
#> 102          5.8         2.7          5.1         1.9  virginica
#> 103          7.1         3.0          5.9         2.1  virginica
#> 104          6.3         2.9          5.6         1.8  virginica
#> 105          6.5         3.0          5.8         2.2  virginica
#> 106          7.6         3.0          6.6         2.1  virginica
#> 107          4.9         2.5          4.5         1.7  virginica
#> 108          7.3         2.9          6.3         1.8  virginica
#> 109          6.7         2.5          5.8         1.8  virginica
#> 110          7.2         3.6          6.1         2.5  virginica
#> 111          6.5         3.2          5.1         2.0  virginica
#> 112          6.4         2.7          5.3         1.9  virginica
#> 113          6.8         3.0          5.5         2.1  virginica
#> 114          5.7         2.5          5.0         2.0  virginica
#> 115          5.8         2.8          5.1         2.4  virginica
#> 116          6.4         3.2          5.3         2.3  virginica
#> 117          6.5         3.0          5.5         1.8  virginica
#> 118          7.7         3.8          6.7         2.2  virginica
#> 119          7.7         2.6          6.9         2.3  virginica
#> 120          6.0         2.2          5.0         1.5  virginica
#> 121          6.9         3.2          5.7         2.3  virginica
#> 122          5.6         2.8          4.9         2.0  virginica
#> 123          7.7         2.8          6.7         2.0  virginica
#> 124          6.3         2.7          4.9         1.8  virginica
#> 125          6.7         3.3          5.7         2.1  virginica
#> 126          7.2         3.2          6.0         1.8  virginica
#> 127          6.2         2.8          4.8         1.8  virginica
#> 128          6.1         3.0          4.9         1.8  virginica
#> 129          6.4         2.8          5.6         2.1  virginica
#> 130          7.2         3.0          5.8         1.6  virginica
#> 131          7.4         2.8          6.1         1.9  virginica
#> 132          7.9         3.8          6.4         2.0  virginica
#> 133          6.4         2.8          5.6         2.2  virginica
#> 134          6.3         2.8          5.1         1.5  virginica
#> 135          6.1         2.6          5.6         1.4  virginica
#> 136          7.7         3.0          6.1         2.3  virginica
#> 137          6.3         3.4          5.6         2.4  virginica
#> 138          6.4         3.1          5.5         1.8  virginica
#> 139          6.0         3.0          4.8         1.8  virginica
#> 140          6.9         3.1          5.4         2.1  virginica
#> 141          6.7         3.1          5.6         2.4  virginica
#> 142          6.9         3.1          5.1         2.3  virginica
#> 143          5.8         2.7          5.1         1.9  virginica
#> 144          6.8         3.2          5.9         2.3  virginica
#> 145          6.7         3.3          5.7         2.5  virginica
#> 146          6.7         3.0          5.2         2.3  virginica
#> 147          6.3         2.5          5.0         1.9  virginica
#> 148          6.5         3.0          5.2         2.0  virginica
#> 149          6.2         3.4          5.4         2.3  virginica
#> 150          5.9         3.0          5.1         1.8  virginica
#>     Species_setosa_eff Species_versicolor_eff
#> 1                    1                      0
#> 2                    1                      0
#> 3                    1                      0
#> 4                    1                      0
#> 5                    1                      0
#> 6                    1                      0
#> 7                    1                      0
#> 8                    1                      0
#> 9                    1                      0
#> 10                   1                      0
#> 11                   1                      0
#> 12                   1                      0
#> 13                   1                      0
#> 14                   1                      0
#> 15                   1                      0
#> 16                   1                      0
#> 17                   1                      0
#> 18                   1                      0
#> 19                   1                      0
#> 20                   1                      0
#> 21                   1                      0
#> 22                   1                      0
#> 23                   1                      0
#> 24                   1                      0
#> 25                   1                      0
#> 26                   1                      0
#> 27                   1                      0
#> 28                   1                      0
#> 29                   1                      0
#> 30                   1                      0
#> 31                   1                      0
#> 32                   1                      0
#> 33                   1                      0
#> 34                   1                      0
#> 35                   1                      0
#> 36                   1                      0
#> 37                   1                      0
#> 38                   1                      0
#> 39                   1                      0
#> 40                   1                      0
#> 41                   1                      0
#> 42                   1                      0
#> 43                   1                      0
#> 44                   1                      0
#> 45                   1                      0
#> 46                   1                      0
#> 47                   1                      0
#> 48                   1                      0
#> 49                   1                      0
#> 50                   1                      0
#> 51                   0                      1
#> 52                   0                      1
#> 53                   0                      1
#> 54                   0                      1
#> 55                   0                      1
#> 56                   0                      1
#> 57                   0                      1
#> 58                   0                      1
#> 59                   0                      1
#> 60                   0                      1
#> 61                   0                      1
#> 62                   0                      1
#> 63                   0                      1
#> 64                   0                      1
#> 65                   0                      1
#> 66                   0                      1
#> 67                   0                      1
#> 68                   0                      1
#> 69                   0                      1
#> 70                   0                      1
#> 71                   0                      1
#> 72                   0                      1
#> 73                   0                      1
#> 74                   0                      1
#> 75                   0                      1
#> 76                   0                      1
#> 77                   0                      1
#> 78                   0                      1
#> 79                   0                      1
#> 80                   0                      1
#> 81                   0                      1
#> 82                   0                      1
#> 83                   0                      1
#> 84                   0                      1
#> 85                   0                      1
#> 86                   0                      1
#> 87                   0                      1
#> 88                   0                      1
#> 89                   0                      1
#> 90                   0                      1
#> 91                   0                      1
#> 92                   0                      1
#> 93                   0                      1
#> 94                   0                      1
#> 95                   0                      1
#> 96                   0                      1
#> 97                   0                      1
#> 98                   0                      1
#> 99                   0                      1
#> 100                  0                      1
#> 101                 -1                     -1
#> 102                 -1                     -1
#> 103                 -1                     -1
#> 104                 -1                     -1
#> 105                 -1                     -1
#> 106                 -1                     -1
#> 107                 -1                     -1
#> 108                 -1                     -1
#> 109                 -1                     -1
#> 110                 -1                     -1
#> 111                 -1                     -1
#> 112                 -1                     -1
#> 113                 -1                     -1
#> 114                 -1                     -1
#> 115                 -1                     -1
#> 116                 -1                     -1
#> 117                 -1                     -1
#> 118                 -1                     -1
#> 119                 -1                     -1
#> 120                 -1                     -1
#> 121                 -1                     -1
#> 122                 -1                     -1
#> 123                 -1                     -1
#> 124                 -1                     -1
#> 125                 -1                     -1
#> 126                 -1                     -1
#> 127                 -1                     -1
#> 128                 -1                     -1
#> 129                 -1                     -1
#> 130                 -1                     -1
#> 131                 -1                     -1
#> 132                 -1                     -1
#> 133                 -1                     -1
#> 134                 -1                     -1
#> 135                 -1                     -1
#> 136                 -1                     -1
#> 137                 -1                     -1
#> 138                 -1                     -1
#> 139                 -1                     -1
#> 140                 -1                     -1
#> 141                 -1                     -1
#> 142                 -1                     -1
#> 143                 -1                     -1
#> 144                 -1                     -1
#> 145                 -1                     -1
#> 146                 -1                     -1
#> 147                 -1                     -1
#> 148                 -1                     -1
#> 149                 -1                     -1
#> 150                 -1                     -1