buffer_JamPolygon: Apply buffer outside or inside JamPolygon

In jmw86069/venndir: Directional Venn diagrams

Apply buffer outside or inside JamPolygon

Description

Apply buffer outside or inside JamPolygon

Usage

buffer_JamPolygon(
  jp,
  buffer = -0.5,
  steps = 20,
  relative = TRUE,
  verbose = FALSE,
  ...
)

Arguments

jp	JamPolygon with one or more polygons. When multiple polygons are provided, they are combined with union_JamPolygon() so that one overall buffer can be provided.
buffer	numeric buffer, where negative values cause the polygon to be reduced in size.
steps	numeric number of steps, default 200, used to determine relative unit sizes when relative=TRUE (which is default).
relative	logical default TRUE, indicating whether to resize polygons using relative dimensions. Relative units are defined by the minimum negative buffer that results in non-zero area, where relative unit -1 would result in zero area.
verbose	logical indicating whether to print verbose output.
...	additional arguments are ignored.

Value

JamPolygon with one polygon, although the polygon could contain multiple disconnected parts.

See Also

Other JamPolygon: JamPolygon-class, Venndir-class, [,JamPolygon,ANY,ANY,ANY-method, add_orientation_JamPolygon(), area_JamPolygon(), bbox_JamPolygon(), check_JamPolygon(), check_Venndir(), eulerr_to_JamPolygon(), farthest_point_JamPolygon(), find_venn_overlaps_JamPolygon(), has_point_in_JamPolygon(), intersect_JamPolygon(), label_fill_JamPolygon(), label_outside_JamPolygon(), label_segment_JamPolygon(), labelr_JamPolygon(), minus_JamPolygon(), nearest_point_JamPolygon(), nudge_JamPolygon(), plot.JamPolygon(), point_in_JamPolygon(), polyclip_to_JamPolygon(), polygon_circles(), polygon_ellipses(), sample_JamPolygon(), split_JamPolygon(), union_JamPolygon(), update_JamPolygon()

Examples

DEdf <- data.frame(check.names=FALSE,
   name=c("D", "E"),
   x=I(list(
      c(-3, 3, 3, 0, -3),
      c(-4, 2, 2, -4))),
   y=I(list(
   c(-3, -3, 1.5, 4, 1.5),
   c(-2, -2, 4, 4))),
fill=c("#FFD70055", "#B2222255"))
jp <- new("JamPolygon", polygons=DEdf)
plot(jp)

jp2 <- nudge_JamPolygon(jp, nudge=list(D=c(10, 0)));
jp_jp2 <- rbind2(jp2, buffer_JamPolygon(jp2));
plot(jp_jp2,
   border.lty=c(1, 1, 2),
   fill=c(NA, NA, "gold"));

jmw86069/venndir documentation built on Nov. 14, 2024, 10:12 a.m.