grid.pattern_gradient()
draws a gradient pattern onto the graphic device.
grid.pattern_gradient( x = c(0, 0, 1, 1), y = c(1, 0, 0, 1), id = 1L, ..., fill = gp$fill %||% "grey80", fill2 = "#4169E1", orientation = "vertical", alpha = gp$alpha %||% NA_real_, use_R4.1_gradients = getOption("ggpattern_use_R4.1_gradients", getOption("ggpattern_use_R4.1_features")), aspect_ratio = 1, key_scale_factor = 1, res = getOption("ggpattern_res", 72), default.units = "npc", name = NULL, gp = gpar(), draw = TRUE, vp = NULL )
x | A numeric vector or unit object specifying x-locations of the pattern boundary. |
---|---|
y | A numeric vector or unit object specifying y-locations of the pattern boundary. |
id | A numeric vector used to separate locations in x, y into multiple boundaries.
All locations within the same |
... | Currently ignored |
fill | Fill colour |
fill2 | Second colour |
orientation | vertical, horizontal, or radial |
alpha | Alpha (between 0 and 1) or |
use_R4.1_gradients | Whether to use the gradient feature introduced in R v4.1
or use a |
aspect_ratio | Override aspect ratio |
key_scale_factor | Additional scale factor for legend |
res | Assumed resolution (in pixels per graphic device inch) to use when creating array pattern. |
default.units | A string indicating the default units to use if |
name | A character identifier. |
gp | An object of class |
draw | A logical value indicating whether graphics output should be produced. |
vp | A Grid viewport object (or NULL). |
A grid grob object invisibly. If draw
is TRUE
then also draws to the graphic device as a side effect.
if (require("grid") && require("magick") && capabilities("png")) { x_hex <- 0.5 + 0.5 * cos(seq(2 * pi / 4, by = 2 * pi / 6, length.out = 6)) y_hex <- 0.5 + 0.5 * sin(seq(2 * pi / 4, by = 2 * pi / 6, length.out = 6)) grid.pattern_gradient(x_hex, y_hex, fill = "green") grid.newpage() grid.pattern_gradient(x_hex, y_hex, fill = "green", orientation = "radial") }![]()
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