test_that("estimate_density", {
skip_if_not_or_load_if_installed("logspline")
skip_if_not_or_load_if_installed("KernSmooth")
skip_if_not_or_load_if_installed("mclust")
set.seed(333)
x <- distribution_normal(500, 1)
# Methods
density_kernel <- estimate_density(x, method = "kernel")
density_logspline <- estimate_density(x, method = "logspline")
density_KernSmooth <- estimate_density(x, method = "KernSmooth")
density_mixture <- estimate_density(x, method = "mixture")
expect_equal(mean(density_kernel$y - density_logspline$y), 0, tolerance = 0.1)
expect_equal(mean(density_kernel$y - density_KernSmooth$y), 0, tolerance = 0.1)
expect_equal(mean(density_kernel$y - density_mixture$y), 0, tolerance = 0.1)
x <- iris
x$Fac <- rep_len(c("A", "B"), 150)
rez <- estimate_density(x, select = "Sepal.Length")
expect_identical(dim(rez), c(1024L, 3L))
rez <- estimate_density(x, select = c("Sepal.Length", "Petal.Length"))
expect_identical(dim(rez), c(2048L, 3L))
rez <- estimate_density(x, select = "Sepal.Length", by = "Species")
expect_identical(dim(rez), as.integer(c(1024 * 3, 4)))
rez <- estimate_density(x, select = c("Sepal.Length", "Petal.Length"), by = "Species")
expect_identical(dim(rez), as.integer(c(2048 * 3, 4)))
rez <- estimate_density(x, select = "Sepal.Length", by = c("Species", "Fac"), method = "KernSmooth")
expect_identical(dim(rez), as.integer(c(1024 * 3 * 2, 5)))
})
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