connectors: connectors

In mskilab/gTrack: Plotting multiple tracks of complex genomic data across multiple genomic windows

connectors

Description

connectors

draws bezier connectors between pairs of signed points points a = (x0, y0, s0) and b(x1, y1, s1)

"S" connectors will use bezier control points that are located in an intermediate y location between y0 and y1, and "U" connectors will use bezier control points that are located in an intermediate x location between x0 and x1.

type can be "U" or "S", if "S", then sign of corresponding v value is ignored (ie control points will always be vertically in between a and b, in addition, neither intermeidate control will never be more than 1/3 of the y distance between a and b

The sign of the endpoints refers to the direction from which the connector approaches the point, s0 = 1 (or '+') means from the right and s0 = 0 means from the left, similarly for s1

h = horizonal "bulge" of signed connector, ie depending on the sign the extent to which the connector will extend to the left or the right of points an and b v = vertical bulge (only applies to U connectors), how far above max(y0, y1) the U connector will bulge if v>0 or how far below min(y0, y1) the connector will bulge.

nsteps determines how many segments used to approximate the curve

all args except nsteps can be vecorized

Usage

connectors(
  x0,
  y0,
  s0 = 1,
  x1,
  y1,
  s1 = 1,
  v = 0.1,
  h = 0.1,
  type = "S",
  f.arrow = T,
  b.arrow = F,
  nsteps = 100,
  cex.arrow = 1,
  col.arrow = "black",
  lwd = 1,
  lty = 1,
  col = "black"
)

Author(s)

Marcin Imielinski

mskilab/gTrack documentation built on Aug. 17, 2024, 6:10 a.m.