treearrow {diagram} | R Documentation |
connects two sets of points with a dendrogram-like structure,
adds an arrowhead at a certain distance
treearrow(from, to, lwd=2, lty=1, lcol="black", arr.side=2, arr.pos=0.5, line.pos=0.5, path="H", ...)
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 |
line.pos |
relative position of (horizontal/vertical) line |
path |
Vertical, Horizontal |
... |
other arguments passed to function straightarrow |
a tree-shaped arrow is drawn between points '(from, to)', where both from and to can be several points. how the segments are drawn is set with "path" which can take on the values:
The segment(s) on which the arrow head is drawn is set with arr.side, which is one or more values in (1, 2) 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:
see Arrowhead
from package shape for details on arrow head
coordinates (x,y) where arrowhead is drawn
Karline Soetaert <k.soetaert@nioo.knaw.nl>
straightarrow
, segmentarrow
, curvedarrow
selfarrow
, bentarrow
, splitarrow
,
arrows
: the comparable R function,
Arrows
: more complicated arrow function from package shape
openplotmat(main="treearrow") pos <- coordinates(c(3,2,4,1)) treearrow(from=pos[1:5,],to=pos[6:10,]) for (i in 1:10) textrect(pos[i,],lab=i,cex=2,radx=0.05) openplotmat(main="treearrow") pos <- coordinates(c(2,4),hor=FALSE) treearrow(from=pos[1:2,],to=pos[3:6,],arr.side=1:2,path="V") for (i in 1:6) textrect(pos[i,],lab=i,cex=2,radx=0.05) openplotmat(main="treearrow") pos <- coordinates(c(3,5,7,7,5,3)) treearrow(from=pos[1:15,],to=pos[15:30,],arr.side=0) for (i in 1:30) textrect(pos[i,],lab=i,cex=1.2,radx=0.025)