adds arrowheads to a plot
adds one or more arrowheads to a plot; shape is either curved, a triangle, a circle or ellipse.
Arrowhead(x0, y0, angle = 0, arr.length = 0.4,
arr.width = arr.length/2, arr.adj = 0.5,
arr.type = "curved", lcol = "black", lty = 1,
arr.col = lcol, arr.lwd = 2, npoint = 5, ...)x0 |
x-coordinates of points at which to draw arrowhead; either one value or a vector. |
y0 |
y-coordinates of points at which to draw arrowhead; either one value or a vector. |
angle |
angle of arrowhead (anti-clockwise, relative to x-axis), in degrees [0,360]; either one value or a vector. |
arr.length |
approximate length of arrowhead, in cm; either one value or a vector. |
arr.width |
approximate width of arrowhead, in cm; either one value or a vector. |
arr.adj |
0,0.5,1 specifying the adjustment of the arrowhead. |
arr.type |
type of arrowhead to draw, one of "curved", "triangle", "circle", "ellipse". |
lcol |
line color specifications; either one value or a vector. |
lty |
line type specifications; either one value or a vector. |
arr.col |
color of arrowhead; either one value or a vector. |
arr.lwd |
line width of arrowhead. |
npoint |
only if |
... |
arguments passed to the |
x0, y0, angle, arr.length, arr.width,
lcol, lty and arr.col can be a vector,
of the same length.
if arr.adj = 0.5, then the centre of the arrowhead is
at the point at which it is drawn.
arr.adj = 1 causes the tip of the arrowhead to
touch the point.
arr.adj = 0 causes the base of the arrowhead to
touch the point.
The type of the arrowhead is set with arr.type which can take
the values:
"triangle": uses filled triangle
"curved" : draws arrowhead with curved edges
"circle" : draws circular head (where arr.width=arr.length)
"ellipse" : draws ellipsoid head
Karline Soetaert <karline.soetaert@nioz.nl>
emptyplot(main = "Arrowhead")
Arrowhead(x0 = runif(10), y0 = runif(10), angle = runif(10)*360,
arr.length = 0.3, arr.type = "circle", arr.col = "green")
Arrowhead(x0 = runif(10), y0 = runif(10), angle = runif(10)*360,
arr.length = 0.4, arr.type = "curved", arr.col = "red")
Arrowhead(x0 = runif(10), y0 = runif(10), angle = runif(10)*360,
arr.length = runif(10), arr.type = "triangle",
arr.col = rainbow(10))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.