Connects two points with 2 segments (default = horizontal-vertical) and adds an arrowhead on (one of) the segments and at a certain distance.

1 2 |

`from ` |
coordinates (x,y) of the point *from* which to draw arrow. |

`to ` |
coordinates (x,y) of the point *to* which to draw arrow. |

`lwd ` |
line width. |

`lty ` |
line type. |

`lcol ` |
line color. |

`arr.col ` |
arrowhead color. |

`arr.side ` |
segment number on which arrowhead is drawn (1,2). |

`arr.pos ` |
relative position of arrowhead on segment on which arrowhead is drawn. |

`path ` |
first segment to be drawn (V=Vertical, H=Horizontal). |

`... ` |
other arguments passed to function straightarrow. |

a two-segmented arrow is drawn between two points '(from, to)'

how the segments are drawn is set with `path`

which can take on
the values:

H: (horizontal): first left or right, then vertical.

V: (vertical) : first down- or upward, then horizontal.

The segment(s) on which the arrow head is drawn is set with `arr.side`

,
which is one or more values in (1, 2)

The position of the arrowhead on the segment on which it is drawn,
is set with `arr.pos`

, a value between 0(start of segment) and 1
(end of segment).

The type of the arrowhead is set with `arr.type`

which can take the
values:

"simple" : uses comparable R function arrows.

"triangle": uses filled triangle.

"curved" : draws arrowhead with curved edges.

"circle" : draws circular head.

"ellipse" : draws ellepsoid head

"T" : draws T-shaped (blunt) head

see `Arrowhead`

from package shape for details on
arrow head.

coordinates (x,y) where arrowhead is drawn

Karline Soetaert <karline.soetaert@nioz.nl>

`straightarrow`

, `segmentarrow`

,
`curvedarrow`

,
`selfarrow`

, `treearrow`

, `splitarrow`

,

`arrows`

: the comparable R function,

`Arrows`

: more complicated arrow function from package
shape.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | ```
openplotmat(main = "bentarrow")
pos <- cbind( A <- seq(0.1, 0.9, by = 0.2), rev(A))
text(pos, LETTERS[1:5], cex = 2)
for (i in 1:4)
bentarrow(from = pos[i,] + c(0.05, 0), to = pos[i+1,] + c(0, 0.05),
arr.pos = 1, arr.adj = 1)
for (i in 1:2)
bentarrow(from = pos[i,] + c(0.05, 0), to = pos[i+1, ] + c(0, 0.05),
arr.pos = 0.5, path = "V", lcol = "lightblue",
arr.type = "triangle")
bentarrow(from = pos[3, ] + c(0.05, 0), to = pos[4, ] + c(0, 0.05),
arr.pos = 0.7, arr.side = 1, path = "V", lcol = "darkblue")
bentarrow(from = pos[4, ] + c(0.05, 0), to = pos[5, ] + c(0, 0.05),
arr.pos = 0.7, arr.side = 1:2, path = "V", lcol = "blue")
``` |

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