addStipples {PBSmapping}R Documentation

Add Stipples to an Existing Plot

Description

Adds stipples to an existing plot.

Usage

addStipples (polys, xlim = NULL, ylim = NULL, polyProps = NULL,
             side = 1, density = 1, distance = 4, ...)

Arguments

polys PolySet that provides the stipple boundaries (required).
xlim range of X-coordinates.
ylim range of Y-coordinates.
polyProps PolyData specifying which polygons to stipple and their properties. par parameters passed as direct arguments supersede these data.
side one of -1, 0, or 1, corresponding to outside, both sides, or inside, respectively.
density density of points, relative to the default.
distance distance to offset points, measured as a percentage of the absolute difference in xlim.
... additional par parameters for the points function.

Details

This function locates stipples based on the PolySet polys and does not stipple degenerate lines.

Value

PolyData consisting of the PolyProps used to create the plot.

See Also

addPoints, addPolys, plotMap, plotPoints, plotPolys, points, PolySet.

Examples

#--- load the data (if using R)
if (!is.null(version$language) && (version$language == "R")) {
  data(nepacLL)
}
#--- plot a map
plotMap(nepacLL, xlim=c(-128.66, -122.83), ylim=c(48.00, 51.16))
#--- add stippling
addStipples(nepacLL, col=2, pch=19, cex=0.25)
[Package PBSmapping version 2.09 Index]