grid.pattern_pch {gridpattern} | R Documentation |
Plotting character patterned grobs
Description
grid.pattern_pch()
draws a plotting character pattern onto the graphic device.
Usage
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,
units = "snpc",
scale = 0.5,
shape = 1L,
grid = "square",
type = NULL,
subtype = NULL,
rot = 0,
alpha = gp$alpha %||% NA_real_,
linetype = gp$lty %||% 1,
linewidth = size %||% gp$lwd %||% 1,
size = NULL,
default.units = "npc",
name = NULL,
gp = gpar(),
draw = TRUE,
vp = NULL
)
Arguments
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(s). |
fill |
Fill colour(s) or |
angle |
Rotation angle in degrees. |
density |
Approx. fraction of area the pattern fills. |
spacing |
Spacing between repetitions of pattern (in |
xoffset |
Shift pattern along x axis (in |
yoffset |
Shift pattern along y axis (in |
units |
|
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. |
linewidth |
Stroke linewidth. |
size |
For backwards compatibility can be used to set |
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). |
Value
A grid grob object invisibly. If draw
is TRUE
then also draws to the graphic device as a side effect.
See Also
grid.pattern_regular_polygon()
which is used to implement this pattern.
Examples
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 <- grid::gpar(col = "black", fill = "lightblue")
if (capabilities("png") || guess_has_R4.1_features("masks")) {
# 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)
}
if (capabilities("png") || guess_has_R4.1_features("masks")) {
# pch 7-14 are compound shapes with no fill
grid::grid.newpage()
grid.pattern_pch(x_hex, y_hex, shape = 7:14, gp = gp,
spacing = 0.1, density = 0.4, angle = 0)
}
if (capabilities("png") || guess_has_R4.1_features("masks")) {
# pch 15-20 are filled with 'col'
grid::grid.newpage()
grid.pattern_pch(x_hex, y_hex, shape = 15:20, gp = gp,
spacing = 0.1, density = 0.4, angle = 0)
}
if (capabilities("png") || guess_has_R4.1_features("masks")) {
# pch 21-25 are filled with 'fill'
grid::grid.newpage()
grid.pattern_pch(x_hex, y_hex, shape = 21:25, gp = gp,
spacing = 0.1, density = 0.4, angle = 0)
}
if (capabilities("png") || guess_has_R4.1_features("masks")) {
# using a 'basket' weave `type` with two shapes
grid::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)
}