Generate model matrix for random effect, such as AR model

the original value is saved a attributes

make_re_matrix(x, lower, upper, space = 1)

Arguments

x

the covariate that we wish to smooth

Details

the original values is made unique and sorted

Examples

make_re_matrix(sample(1:10, 7))
#> Loading required package: Matrix
#> 
#> Attaching package: ‘Matrix’
#> The following object is masked from ‘package:ktools’:
#> 
#>     rBind
#> The following objects are masked from ‘package:tidyr’:
#> 
#>     expand, pack, unpack
#> 7 x 8 sparse Matrix of class "dgCMatrix"
#>                     
#> [1,] . . . . . . 1 .
#> [2,] . . . . 1 . . .
#> [3,] . . . . . 1 . .
#> [4,] 1 . . . . . . .
#> [5,] . . . . . . . 1
#> [6,] . 1 . . . . . .
#> [7,] . . . 1 . . . .