R: Spline Arrow

spline.arrow {RFOC} | R Documentation

## Spline Arrow

### Description

Given a set of points, draw a spline and affix an arrow at the end.

### Usage

    spline.arrow(x, y = 0, kdiv = 20, arrow = 1,
     length = 0.2, col = "black", thick = 0.01,
    headlength = 0.2, headthick = 0.1, code = 2, ...)

### Arguments

`x` | vector, x-coordinates
`y` | vector, y-coordinates
`kdiv` | Number of divisions
`arrow` | style of arrow, 1=simple arrow, 2=fancy arrow
`length` | length of head
`col` | color of arrow
`thick` | thickness of arrow stem
`headlength` | length of arrow head
`headthick` | thickness of arrow head
`code` | code, 1=arrow on end of spline, 3=arrow on beginning.
`...` | graphical parameters for the line

### Details

Can use either simple arrows or fancy arrows.

### Value

list of x,y coordinates of the spline and Graphical Side effects

### Author(s)

Jonathan M. Lees<jonathan.lees@unc.edu>

### See Also

fancyarrows

### Examples

    plot(c(0,1), c(0,1), type='n')

    G=list()
    G$x=c(0.1644,0.1227,0.0659,0.0893,0.2346,
    0.3514,0.5518,0.7104,0.6887,0.6903,0.8422)
    G$y=c(0.8816,0.8305,0.7209,0.6086,0.5372,
    0.6061,0.6545,0.6367,0.4352,0.3025,0.0475)

    spline.arrow(G$x, G$y)

[Package RFOC version 3.4-3 Index]