splines
Controls how, and if, edges are represented.
If splines=true, edges are drawn as splines routed around nodes; if
splines=false, edges are drawn as line segments. If splines=none or
splines="", no edges are drawn at all.
(1 March 2007) splines=line and splines=spline can be
used as synonyms for splines=false and splines=true, respectively.
In addition, splines=polyline specifies that edges should be drawn as
polylines.
(28 Sep 2010) splines=ortho specifies edges should be
routed as polylines of axis-aligned segments. Currently, the routing
does not handle ports or, in dot, edge labels.
(25 Sep 2012) splines=curved specifies edges should be drawn as curved
arcs.
 |
 |
| splines=none splines="" |
splines=line splines=false |
 |
 |
| splines=polyline | splines=curved |
 |
 |
| splines=ortho | splines=spline splines=true |
By default, splines is unset. How this is interpreted depends on
the layout engine. For dot, the default is to draw edges as splines. For all
other layouts, the default is to draw edges as line segments.
Note that for these latter layouts, if splines="true", this
requires non-overlapping nodes (cf. overlap).
If fdp is used for layout and splines="compound", then the edges are
drawn to avoid clusters as well as nodes.
- Graphs