hexGraphPaper

0th

Percentile

Create a Hexgon Grid

Creates a hexagon grid that can be added to a plot created with grid graphics.

Keywords
dplot, aplot
Usage
hexGraphPaper(hb, xbnds = NULL, ybnds = NULL, xbins = 30, shape = 1,
              add = TRUE, fill.edges = 1, fill = 0, border = 1)

hgridcent(xbins, xbnds, ybnds, shape, edge.add = 0)

Arguments
hb
a object of class "hexbin", typically produced by hexbin(*).
xbnds, ybnds
horizontal and vertical limits of the binning region in x or y units respectively; must be numeric vector of length 2.
xbins
the number of bins partitioning the range of xbnds.
shape
the shape = yheight/xwidth of the plotting regions.
add
a logical value indicating whether or not to add the grid to the current plot.
fill.edges
integer number of hexagons to add around the border
fill
the fill color for the hexagons
border
the color of the border of the hexagons
edge.add
offset (typically fill.edges above) used in hgridcent.
Details

If a hexbin object is given then the parameters xbins and shape are ignored. Different bounds can still be specified. The fill.edges parameter should be an integer. fill.edges takes the current grid and adds a layer of hexagons around the grid for each level of fill. So for example if fill.edges= 2 than the dimensions of the grid would be (i,j)+4.

hgridcent() is the utility function computing the resulting list (see section Value).

WARNING! If using a hexVP be sure to set clip to "on", otherwise the hexagon grid will bleed over the plot edges.

Value

  • Invisibly returns a list with th following components
  • xThe x coordinates of the grid
  • ythe y coordinates of the grid
  • dimena vector of length 2 gining the rows and columns of the grid
  • dxthe horizontal diameter of the hexagons
  • dythe vertical diameter of the hexagons

See Also

hcell2xy, hexpolygon, grid.hexagons

Aliases
  • hexGraphPaper
  • hgridcent
Examples
x <- rnorm(10000)
 y <- rnorm(10000,x,x)
 hbin <- hexbin(x,y)
 hvp <- plot(hbin,type="n")
 pushHexport(hvp$plot,clip="on")
 hexGraphPaper(hbin,border=grey(.8))
 grid.hexagons(hbin)
Documentation reproduced from package hexbin, version 1.26.3, License: GPL-2

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