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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