skip_on_os(c("mac", "solaris"))
skip_if_not_installed("nlme")
skip_if_not_installed("effects")
skip_if_not_installed("emmeans")
test_that("ggpredict", {
data(Ovary, package = "nlme")
m1 <- nlme::gls(follicles ~ Time, Ovary, correlation = nlme::corAR1(form = ~ 1 | Mare))
p <- ggpredict(m1, "Time")
expect_equal(p$predicted[1], 11.49246, tolerance = 1e-3)
p <- ggeffect(m1, "Time")
expect_equal(p$predicted[1], 11.49246, tolerance = 1e-3)
p <- ggemmeans(m1, "Time")
expect_equal(p$predicted[1], 11.49246, tolerance = 1e-3)
})
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