hexViewport
From hexbin v1.27.1
by Edzer Pebesma
Compute a Grid Viewport for Hexagon / Hexbin Graphics
Builds a grid
viewport for hexagon or hexbin
graphics. This builds on the concepts of the grid package,
see viewport
.
Usage
hexViewport(x, offset = unit(0,"inches"), mar = NULL,
xbnds = NULL, ybnds = NULL, newpage = FALSE,
clip = "off", vp.name = NULL)
Arguments
- x
a
hexbin
object.- offset
a
unit
object.- mar
margins as
unit
s, of length 4 or 1.- xbnds, ybnds
bounds for x- and y- plotting range; these default to the corresponding slots of
x
.- newpage
logical indicating if a new graphics page should be openend, i.e.,
grid.newpage()
.- clip
simply passed to
viewport()
.- vp.name
name of viewport; defaults to random name.
Value
an S4 object of class "hexVP"
, see hexVP-class for more,
with its main slot hexVp
a viewport
for
grid graphics.
See Also
viewport
and the main
“handlers” pushHexport
and
popViewport
; further
gplot.hexbin
and hboxplot
which build on
hexViewport
.
Examples
library(hexbin)
# NOT RUN {
set.seed(131)
x <- rnorm(7777)
y <- rt (7777, df=3)
## lower resolution binning and overplotting with counts
bin <- hexbin(x,y,xbins=25)
P <- plot(bin)
xy <- hcell2xy(bin)
pushHexport(P$plot.vp)
i <- bin@count <= 3
library("grid")
grid.text(as.character(bin@count[i]), xy$x[i], xy$y[i],
default.units = "native")
grid.points(x[1:20],y[1:20]) # to show some points rather than counts
popViewport()
# }
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