Adds Snow's graphical annotation of the Broad Street pump walking neighborhood.
addSnow(type = "area", color = "dodgerblue", alpha.level = 0.25,
line.width = 2)
Character. Type of annotation plot: "area", "perimeter" or "street".
Character. Neighborhood color.
Numeric. Alpha level transparency: a value in [0, 1].
Numeric. Line width for type = "street"
and type = "perimeter"
.
if (FALSE) {
plot(neighborhoodVoronoi())
addSnow()
}
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