Nothing
if (suppressWarnings(
requiet("testthat") &&
requiet("ggeffects") &&
requiet("sjlabelled") &&
requiet("sjmisc")
)) {
# lm, linear regression ----
data(efc, package = "ggeffects")
efc$c172code <- to_label(efc$c172code)
fit <- lm(barthtot ~ c12hour + neg_c_7 + c161sex + c172code, data = efc)
test_that("ggpredict, lm", {
pr <- ggpredict(fit, "c12hour [20,30,40]")
p <- suppressWarnings(plot(pr))
p <- suppressWarnings(plot(pr, ci = FALSE))
p <- suppressWarnings(plot(pr, ci = TRUE, ci.style = "dot"))
p <- suppressWarnings(plot(pr, add.data = TRUE))
p <- suppressWarnings(plot(pr, add.data = TRUE, jitter = FALSE))
p <- suppressWarnings(plot(pr, colors = "bw"))
p <- suppressWarnings(plot(pr, colors = "gs"))
pr <- ggpredict(fit, c("c12hour", "c172code"))
p <- suppressWarnings(plot(pr))
p <- suppressWarnings(plot(pr, ci = FALSE))
p <- suppressWarnings(plot(pr, ci = TRUE, ci.style = "dot"))
p <- suppressWarnings(plot(pr, add.data = TRUE))
p <- suppressWarnings(plot(pr, add.data = TRUE, jitter = 0))
p <- suppressWarnings(plot(pr, facets = TRUE))
p <- suppressWarnings(plot(pr, facets = FALSE))
p <- suppressWarnings(plot(pr, use.theme = FALSE))
p <- suppressWarnings(plot(pr, colors = "bw"))
p <- suppressWarnings(plot(pr, colors = "gs"))
})
test_that("plot, correct x-labels order for character vector", {
d_char <- data.frame(
x = c("low", "low", "high", "high"),
y = c(0, 1, 10, 12),
stringsAsFactors = FALSE
)
m_char <- lm(y ~ x, data = d_char)
preds <- ggpredict(m_char, terms = "x [all]")
expect_identical(
attributes(preds)$x.axis.labels,
c("high", "low")
)
preds <- ggpredict(m_char, terms = "x")
expect_identical(
attributes(preds)$x.axis.labels,
c("low", "high")
)
d_char <- data.frame(
x = factor(c("low", "low", "high", "high")),
y = c(0, 1, 10, 12),
stringsAsFactors = FALSE
)
m_char <- lm(y ~ x, data = d_char)
preds <- ggpredict(m_char, terms = "x [all]")
expect_identical(
attributes(preds)$x.axis.labels,
c("high", "low")
)
})
}
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