selfarrow {diagram} | R Documentation |
adds a circular arrow, from and to the same point
selfarrow(pos, lwd=2, lty=1, lcol="black", arr.pos=0.5, path="L", curve=c(0.1,0.1), dr=0.01, code=1, ...)
pos |
2-valued vector with coordinates (x,y) of points *from and to* which to draw arrow. |
lwd |
line width. |
lty |
line type. |
lcol |
line color. |
arr.pos |
relative position of arrowhead. |
path |
position of circle: R, L, U, D for right, left, up and down respectively. |
curve |
relative size of curve (fraction of arrow length). |
dr |
size of segments, in radians, to draw ellipse (decrease for smoother). |
code |
how to put the arrowhead. |
... |
arguments passed to function Arrows. |
draws a circular arrow from and to one point
The position of the arrowhead on the circle is set with arr.pos
,
a value between 0 (at start) and 1(at end of circle)
The type of the arrowhead is set with arr.type
which can take the
values:
see Arrowhead
for details on arrow head.
coordinates (x,y) where arrowhead is drawn
Karline Soetaert <k.soetaert@nioo.knaw.nl>
straightarrow
, segmentarrow
,
curvedarrow
,
bentarrow
,treearrow
, splitarrow
,
arrows
: the comparable R function,
Arrows
: more complicated arrow function from package
shape.
openplotmat(main="selfarrow") pos <- coordinates(3,mx=0.05) text(pos,LETTERS[1:3],cex=2) for (i in 1:3) selfarrow(pos=pos[i,],path="R",arr.pos=0.2, curve=c(0.05,0.1), lcol="darkred") for (i in 1:3) selfarrow(pos=pos[i,],path="L",arr.pos=0.7, lcol="darkblue", curve=c(0.05,0.05)) for (i in 1:3) selfarrow(pos=pos[i,],path="L",arr.pos=0.5, lcol="darkgreen", code=i)