grid.pattern_crosshatch()
draws a crosshatch pattern onto the graphic device.
Usage
grid.pattern_crosshatch(
x = c(0, 0, 1, 1),
y = c(1, 0, 0, 1),
id = 1L,
...,
colour = gp$col %||% "grey20",
fill = gp$fill %||% "grey80",
fill2 = fill,
angle = 30,
density = 0.2,
spacing = 0.05,
xoffset = 0,
yoffset = 0,
units = "snpc",
alpha = gp$alpha %||% NA_real_,
linetype = gp$lty %||% 1,
linewidth = size %||% gp$lwd %||% 1,
size = NULL,
grid = "square",
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
id
belong to the same boundary.- ...
Currently ignored.
- colour
Stroke colour(s).
- fill
Fill colour(s) or
grid::pattern()
/ gradient object(s).- fill2
The fill colour for the “top” crosshatch lines.
- angle
Rotation angle in degrees.
- density
Approx. fraction of area the pattern fills.
- spacing
Spacing between repetitions of pattern (in
units
units).- xoffset
Shift pattern along x axis (in
units
units).- yoffset
Shift pattern along y axis (in
units
units).- units
grid::unit()
units forspacing
,xoffset
, andyoffset
parameters.- alpha
Alpha (between 0 and 1) or
NA
(default, preserves colors' alpha value).- linetype
Stroke linetype.
- linewidth
Stroke linewidth.
- size
For backwards compatibility can be used to set
linewidth
.- grid
Adjusts placement and density of certain graphical elements.
"square"
(default) is a square grid."hex"
is a hexagonal grid suitable for hexagonal and triangular tiling."hex_circle"
is a hexagonal grid suitable for circle packing."elongated_triangle"
is a grid used for the "elongated triangle" tiling.- default.units
A string indicating the default units to use if
x
ory
are only given as numeric vectors.- name
A character identifier.
- gp
An object of class
"gpar"
, typically the output from a call to the functiongpar
. This is basically a list of graphical parameter settings.- 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_weave()
which interweaves two sets of lines.
For a single set of lines use grid.pattern_stripe()
.
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))
grid.pattern_crosshatch(x_hex, y_hex, colour = "black", fill = "blue",
fill2 = "yellow", density = 0.5)
grid::grid.newpage()
grid.pattern_crosshatch(x_hex, y_hex, density = 0.3,
gp = grid::gpar(col = "blue", fill = "yellow"))