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guide_axis_theta: fix missing label for one unique key #6424

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Merged
merged 3 commits into from
Apr 16, 2025
Merged

guide_axis_theta: fix missing label for one unique key #6424

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350721d
guide_axis_theta: fix missing label for one unique key
Yunuuuu Apr 14, 2025
55f1b71
rename the test result
Yunuuuu Apr 14, 2025
08d8932
simplify the test
Yunuuuu Apr 14, 2025
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5 changes: 3 additions & 2 deletions R/guide-axis-theta.R
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Original file line number Diff line number Diff line change
Expand Up @@ -104,8 +104,9 @@ GuideAxisTheta <- ggproto(

# If the first and last positions are close together, we merge the
# labels of these positions
ends_apart <- (key$theta[n] - key$theta[1]) %% (2 * pi)
if (n > 0 && ends_apart < 0.05 && !is.null(key$.label)) {
if (n > 1L &&
(key$theta[n] - key$theta[1]) %% (2 * pi) < 0.05 &&
!is.null(key$.label)) {
if (is.expression(key$.label[[1]])) {
combined <- substitute(
paste(a, "/", b),
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7 changes: 7 additions & 0 deletions tests/testthat/test-guide-axis.R
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Expand Up @@ -382,6 +382,13 @@ test_that("guide_axis_theta sets relative angle", {
expect_doppelganger("guide_axis_theta with angle adapting to theta", p)
})

test_that("guide_axis_theta with only one axis key", {
p <- ggplot(data.frame(x = "a", y = 1:3), aes(x, y)) +
geom_point() +
coord_radial()
expect_identical(get_guide_data(p, "theta")$.label, "a")
})

test_that("guide_axis_theta can be used in cartesian coordinates", {

p <- ggplot(mtcars, aes(disp, mpg)) +
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