Add random effects to a data frame

Usage

add_ranef(.data, .by = NULL, ..., .cors = 0, .empirical = FALSE)

Arguments

.data: the data frame
.by: the grouping column (groups by row if NULL)
...: the name and standard deviation of each random effect
.cors: the correlations among multiple random effects, to be passed to rnorm_multi as r
.empirical: logical. To be passed to rnorm_multi as empirical

Value

data frame with new random effects columns

Examples

add_random(rater = 2, stimulus = 2, time = 2) %>%
  add_ranef("rater", u0r = 1.5) %>%
  add_ranef("stimulus", u0s = 2.2, u1s = 0.75, .cors = 0.5) %>%
  add_ranef(c("rater", "stimulus"), u0sr = 1.2)
#> # A tibble: 8 × 7
#>   rater  stimulus  time     u0r   u0s    u1s   u0sr
#>   <chr>  <chr>     <chr>  <dbl> <dbl>  <dbl>  <dbl>
#> 1 rater1 stimulus1 time1 -0.543  1.47  1.41   0.363
#> 2 rater1 stimulus1 time2 -0.543  1.47  1.41   0.363
#> 3 rater1 stimulus2 time1 -0.543 -1.78 -0.477  0.445
#> 4 rater1 stimulus2 time2 -0.543 -1.78 -0.477  0.445
#> 5 rater2 stimulus1 time1  1.42   1.47  1.41  -2.29 
#> 6 rater2 stimulus1 time2  1.42   1.47  1.41  -2.29 
#> 7 rater2 stimulus2 time1  1.42  -1.78 -0.477  1.01 
#> 8 rater2 stimulus2 time2  1.42  -1.78 -0.477  1.01