spatstat (version 1.41-1)

plot.onearrow: Plot an Arrow

Description

Plots an object of class "onearrow".

Usage

## S3 method for class 'onearrow':
plot(x, \dots,
  add = FALSE, main = "",
  retract = 0.05, headfraction = 0.25, headangle = 12, headnick = 0.1,
  col.head = NA, lwd.head = lwd, lwd = 1, col = 1,
  zap = FALSE, zapfraction = 0.07,
  pch = 1, cex = 1, do.plot = TRUE, do.points = FALSE, show.all = !add)

Arguments

x

Object of class "onearrow" to be plotted. This object is created by the command onearrow.

...

Additional graphics arguments passed to segments to control the appearance of the line.

add

Logical value indicating whether to add graphics to the existing plot (add=TRUE) or to start a new plot (add=FALSE).

main

Main title for the plot.

retract

Fraction of length of arrow to remove at each end.

headfraction

Length of arrow head as a fraction of overall length of arrow.

headangle

Angle (in degrees) between the outer edge of the arrow head and the shaft of the arrow.

headnick

Size of the nick in the trailing edge of the arrow head as a fraction of length of arrow head.

col.head,lwd.head

Colour and line style of the filled arrow head.

col,lwd

Colour and line style of the arrow shaft.

zap

Logical value indicating whether the arrow should include a Z-shaped (lightning-bolt) feature in the middle of the shaft.

zapfraction

Size of Z-shaped deviation as a fraction of total arrow length.

pch,cex

Plot character and character size for the two end points of the arrow, if do.points=TRUE.

do.plot

Logical. Whether to actually perform the plot.

do.points

Logical. Whether to display the two end points of the arrow as well.

show.all

Internal use only.

Value

• A window (class "owin") enclosing the plotted graphics.

Details

The argument x should be an object of class "onearrow" created by the command onearrow.

See Also

onearrow, yardstick

Examples

oa <- onearrow(cells[c(1, 42)])
  plot(oa)
  plot(oa, zap=TRUE, do.points=TRUE, col.head="pink", col="red")