splitarrow {diagram} | R Documentation |
connects two sets of points with a star-like structure, adds an arrowhead at a certain distance
splitarrow(from, to, lwd=2, lty=1, lcol="black", arr.side=2, arr.pos=0.5, centre=NULL, dd=0.5, ...)
from |
matrix of coordinates (x,y) of points *from* which to draw arrow. |
to |
matrix of coordinates (x,y) of points *to* which to draw arrow. |
lwd |
line width. |
lty |
line type. |
lcol |
line 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. |
centre |
coordinates (x,y) of central point. |
dd |
relative position of central point, only when centre=NULL .
|
... |
other arguments passed to function straightarrow. |
a branched arrow is drawn between points '(from
, to
)',
where both from
and to
can be several points.
The arrow segments radiate into a central point. Either the (x,y)
coordinates of this central point are set with centre
or
it is estimated at a certain distance (dd
>0,<1) between the
centroid of the *from
* points and the centroid of the *to
*
points.
The segment(s) on which the arrow head is drawn is set with arr.side
,
which is one or more values in (1, 2)
arr.side=1
sets the arrow head on the segment *from* ->
central point
arr.side=2
sets the arrow head on the segment
central point -> *to*
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:
arrows
.
see Arrowhead
from package shape for details on
arrow head.
coordinates (x,y) where arrowheads are drawn
Karline Soetaert <k.soetaert@nioo.knaw.nl>
straightarrow
, segmentarrow
,
curvedarrow
, selfarrow
, bentarrow
,
treearrow
,
arrows
: the comparable R function,
Arrows
: more complicated arrow function from package
shape.
openplotmat(main="splitarrow") pos <- coordinates(c(1,2,2,4,1)) splitarrow(from=pos[1,],to=pos[2:10,],arr.side=1,centre=c(0.5,0.625)) for (i in 1:10) textrect(pos[i,],lab=i,cex=2,radx=0.05) openplotmat(main="splitarrow") pos <- coordinates(c(1,3)) splitarrow(from=pos[1,],to=pos[2:4,],arr.side=1) splitarrow(from=pos[1,],to=pos[2:4,],arr.side=2) for (i in 1:4) textrect(pos[i,],lab=i,cex=2,radx=0.05) openplotmat(main="splitarrow") pos <- coordinates(N=6) pos <- rbind(c(0.5,0.5),pos) splitarrow(from=pos[1,],to=pos[2:7,],arr.side=2) for (i in 1:7) textrect(pos[i,],lab=i,cex=2,radx=0.05)