Layout an undirected graph in 2D – suspended june 16 2012
Layout an undirected graph in 2D – suspended june 16 2012
circleLayout(g, radius=1) # does not compile with boost 1.49 kamadaKawaiSpringLayout( g, edge_or_side=1, es_length=1 ) fruchtermanReingoldForceDirectedLayout(g, width=1, height=1) randomGraphLayout(g, minX=0, maxX=1, minY=0, maxY=1)
g |
an instance of the |
radius |
radius of a regular n-polygon |
edge_or_side |
boolean indicating the length is for an edge or for a side, default is for an edge |
es_length |
the length of an edge or a side for layout |
width |
the width of the dislay area, all x coordinates fall in [-width/2, width/2] |
height |
the height of the display area, all y coordinates fall in [-height/2, height/2] |
minX |
minimum x coordinate |
maxX |
maximum x coordinate |
minY |
minimum y coordinate |
maxY |
maximum y coordinate |
If you want to simply draw a graph, you should consider using package
Rgraphviz. The layout options in package Rgraphviz: neato,
circo and fdp, correspond to kamadaKawaiSpringLayout,
circleLayout and fruchtermanReingoldForceDirectedLayout,
respectively.
Function circleLayout layouts the graph with the vertices at the points
of a regular n-polygon. The distance from the center of the polygon to each
point is determined by the radius parameter.
Function kamadaKawaiSpringLayout provides Kamada-Kawai spring layout for
connected, undirected graphs. User provides either the unit length e of an
edge in the layout or the length of a side s of the display area.
Function randomGraphLayout places the points of the graph at random locations.
Function fruchtermanReingoldForceDirectedLayout performs layout of
unweighted, undirected graphs. It's a force-directed algorithm. The BGL
implementation doesn't handle disconnected graphs very well, since it doesn't
explicitly give each connected component a region proportional to its size.
See documentation on this function in Boost Graph Library for more details.
A (2 x n) matrix, where n is the number of nodes in the graph, each column gives the (x, y)-coordinates for the corresponding node.
Li Long <li.long@isb-sib.ch>
Boost Graph Library ( www.boost.org/libs/graph/doc/index.html )
The Boost Graph Library: User Guide and Reference Manual; by Jeremy G. Siek, Lie-Quan Lee, and Andrew Lumsdaine; (Addison-Wesley, Pearson Education Inc., 2002), xxiv+321pp. ISBN 0-201-72914-8
## Not run:
con <- file(system.file("XML/conn.gxl",package="RBGL"), open="r")
coex <- fromGXL(con)
close(con)
coex <- ugraph(coex)
circleLayout(coex)
kamadaKawaiSpringLayout(coex)
randomGraphLayout(coex)
fruchtermanReingoldForceDirectedLayout(coex, 10, 10)
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.