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Document guide_colourbar() ticks behaviour #6660

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Document guide_colourbar() ticks behaviour #6660

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8d5d7b9
document tick behaviour
teunbrand Sep 29, 2025
79e0ded
include different ticks in pre-existing test
teunbrand Sep 29, 2025
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4 changes: 4 additions & 0 deletions R/guide-colorbar.R
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,10 @@ NULL
#' @param available_aes A vector of character strings listing the aesthetics
#' for which a colourbar can be drawn.
#' @param ... ignored.
#' @details
#' The `legend.ticks.length` theme option can be set to a length 2 unit to
#' control ticks at the right/bottom and left/top sides independently.
#'
#' @return A guide object
#' @export
#' @family guides
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3 changes: 3 additions & 0 deletions man/guide_colourbar.Rd
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10 changes: 5 additions & 5 deletions tests/testthat/_snaps/guide-colorbar/customized-colorbar.svg
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2 changes: 1 addition & 1 deletion tests/testthat/test-guide-colorbar.R
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Expand Up @@ -78,7 +78,7 @@ test_that("colorbar can be styled", {
theme = theme(
legend.frame = element_rect(colour = "green", linewidth = 1.5 / .pt),
legend.ticks = element_line("black", linewidth = 2.5 / .pt),
legend.ticks.length = unit(0.4, "npc")
legend.ticks.length = unit(c(0.2, 0.4), "npc")
), alpha = 0.75
)
) + labs(subtitle = "white-to-red semitransparent colorbar, long thick black ticks, green frame")
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