grid.pattern_pch()
draws a plotting character pattern onto the graphic device.
grid.pattern_pch( x = c(0, 0, 1, 1), y = c(1, 0, 0, 1), id = 1L, ..., colour = gp$col %||% "grey20", fill = gp$fill %||% "grey80", angle = 30, density = 0.2, spacing = 0.05, xoffset = 0, yoffset = 0, scale = 0.5, shape = 1L, grid = "square", type = NULL, subtype = NULL, rot = 0, alpha = gp$alpha %||% NA_real_, linetype = gp$lty %||% 1, size = gp$lwd %||% 1, 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 |
colour | Stroke colour |
fill | Fill colour |
angle | Rotation angle in degrees |
density | Approx. fraction of area the pattern fills. |
spacing | Spacing between repetitions of pattern ('snpc' units between 0 and 1). |
xoffset | Shift pattern along x axis ('snpc' units between 0 and 1). |
yoffset | Shift pattern along y axis ('snpc' units between 0 and 1). |
scale | For star polygons, multiplier (between 0 and 1) applied to exterior radius to get interior radius. |
shape | An integer from |
grid | Adjusts placement and density of certain graphical elements.
|
type | Adjusts the repeating of certain aesthetics such as color.
Can use any type in |
subtype | See for |
rot | Angle to rotate regular polygon (degrees, counter-clockwise). |
alpha | Alpha (between 0 and 1) or |
linetype | Stroke linetype |
size | Stroke linewidth |
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.
grid.pattern_regular_polygon()
which is used to implement this pattern.
if (require("grid")) { 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)) gp <- gpar(col = "black", fill = "lightblue") # pch 0-6 are simple shapes with no fill grid.pattern_pch(x_hex, y_hex, shape = 0:6, gp = gp, spacing = 0.1, density = 0.4, angle = 0) # pch 7-14 are compound shapes with no fill grid.newpage() grid.pattern_pch(x_hex, y_hex, shape = 7:14, gp = gp, spacing = 0.1, density = 0.4, angle = 0) # pch 15-20 are filled with 'col' grid.newpage() grid.pattern_pch(x_hex, y_hex, shape = 15:20, gp = gp, spacing = 0.1, density = 0.4, angle = 0) # pch 21-25 are filled with 'fill' grid.newpage() grid.pattern_pch(x_hex, y_hex, shape = 21:25, gp = gp, spacing = 0.1, density = 0.4, angle = 0) # using a 'basket' weave `type` with two shapes grid.newpage() grid.pattern_pch(x_hex, y_hex, shape = c(1,4), gp = gp, type = "basket", spacing = 0.1, density = 0.4, angle = 0) }![]()
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