diff options
Diffstat (limited to 'tests/testthat/test_nlme.R')
| -rw-r--r-- | tests/testthat/test_nlme.R | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/tests/testthat/test_nlme.R b/tests/testthat/test_nlme.R index efbc231a..d272af38 100644 --- a/tests/testthat/test_nlme.R +++ b/tests/testthat/test_nlme.R @@ -1,5 +1,7 @@ context("Nonlinear mixed-effects models") +library(nlme) + test_that("nlme_function works correctly", { sampling_times = c(0, 1, 3, 7, 14, 28, 60, 90, 120) @@ -47,8 +49,27 @@ test_that("nlme_function works correctly", { expect_equal(m_nlme_raw$coefficients, m_nlme_mkin$coefficients) + m_nlme_mmkin <- nlme(f) + + m_nlme_raw_2 <- nlme(value ~ SSasymp(time, 0, parent_0, log_k_parent_sink), + data = grouped_data, + fixed = parent_0 + log_k_parent_sink ~ 1, + random = pdDiag(parent_0 + log_k_parent_sink ~ 1), + start = mean_degparms(f, random = TRUE)) + + expect_equal(m_nlme_raw_2$coefficients, m_nlme_mmkin$coefficients) + + anova_nlme <- anova(m_nlme_mmkin, m_nlme_raw) # mmkin needs to go first as we had + # to adapt the method due to + # https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17761 + + # We get a slightly lower AIC with the improved starting values used within + # nlme.mmkin + expect_lt(anova_nlme["m_nlme_mmkin", "AIC"], + anova_nlme["m_nlme_raw", "AIC"]) + m_nlme_raw_up_1 <- update(m_nlme_raw, random = log_k_parent_sink ~ 1) - # The following two calls give an error although they should + # The following three calls give an error although they should # do the same as the call above # The error occurs in the evaluation of the modelExpression in the # call to .C(fit_nlme, ...) @@ -58,16 +79,20 @@ test_that("nlme_function works correctly", { # fixed = parent_0 + log_k_parent_sink ~ 1, # random = log_k_parent_sink ~ 1, # start = mean_dp) + # update(m_nlme_mmkin, random = pdDiag(log_k_parent_sink ~ 1), + # start = c(parent_0 = 100, log_k_parent_sink = 0.1)) m_nlme_raw_up_2 <- update(m_nlme_raw, random = parent_0 ~ 1) m_nlme_mkin_up_2 <- update(m_nlme_mkin, random = parent_0 ~ 1) expect_equal(m_nlme_raw_up_2$coefficients, m_nlme_mkin_up_2$coefficients) expect_silent(tmp <- update(m_nlme_mkin)) + expect_silent(tmp <- update(m_nlme_mmkin)) }) test_that("nlme_function works correctly in other cases", { + skip_on_cran() dt50_in <- c(400, 800, 1200, 1600, 2000) k_in <- log(2) / dt50_in SFO <- mkinmod(parent = mkinsub("SFO")) |