Extract parameters' draws
extract_draws(obj, draws)Array/Vector/Matrix of draws (cf. first dimension) or list of it.
Vector of draws to extract.
Dataframe with columns: Draw, Index, Value and Parameter.
x <- rnorm(1e3)
X <- matrix(x, ncol = 10)
a <- array(rnorm(80), dim = c(10, 2, 2, 2))
extract_draws(x, sample(1:length(x), 10))
#> Draw Index Value Parameter
#> 1 326 NA 0.7711702
#> 2 257 NA 0.5220327
#> 3 105 NA -1.3224836
#> 4 654 NA 0.9458170
#> 5 746 NA 1.3818006
#> 6 132 NA -0.2083272
#> 7 859 NA 0.8845094
#> 8 338 NA -0.1364428
#> 9 435 NA -0.2627182
#> 10 312 NA -0.5341900
extract_draws(X, sample(1:nrow(X), 10)) %>% head()
#> Draw Index Value Parameter
#> 1 29 1 -1.8653027
#> 2 31 1 1.0523220
#> 3 62 1 -0.1456682
#> 4 93 1 2.0142505
#> 5 68 1 1.3568983
#> 6 73 1 -0.8230297
extract_draws(a, sample(1:10, 5)) %>% head()
#> Draw Value Index Parameter
#> 3 3 -1.33252770 NA [1,1,1]
#> 5 5 0.02511390 NA [1,1,1]
#> 6 6 -0.75371502 NA [1,1,1]
#> 9 9 -0.01135488 NA [1,1,1]
#> 10 10 -0.66968870 NA [1,1,1]
#> 13 3 1.22714959 NA [2,1,1]
extract_draws(list(x = x, X = X, a = a), 1:10) %>% head()
#> Draw Index Value Parameter
#> 1 1 NA 0.9735376 x
#> 2 2 NA -0.8452533 x
#> 3 3 NA 1.1172942 x
#> 4 4 NA 0.8076302 x
#> 5 5 NA 0.1668433 x
#> 6 6 NA -1.1330682 x