def _del(self, handle="", node="", edge="", subg=""):
""" Deletes items.
Finds the item handle by type, if necessary, and removes the
item from graph
"""
head, tail = '', ''
if edge:
head, tail = edge
node, head, tail, subg = map(encode_page, [node, head, tail, subg])
self.changed = 1
if head and tail:
item = gv.findedge(gv.findnode(handle, head),
gv.findnode(handle, tail))
elif node:
item = gv.findnode(handle, node)
elif subg:
item = gv.findsubg(handle, subg)
elif handle:
item = handle
else:
raise ValueError("No graph element or element type specified")
if item:
gv.rm(item)
def draw_graph(aData):
g = gv.digraph("G")
#gv.setv(g, "label", "TEST")
#gv.setv(g, "rankdir", "LR")
# Set node style
#n = gv.protonode(g0)
#gv.setv(n, "shape", "ellipse")
# draw notes
draw_note(g)
# draw one common node: swith
#draw_node(g, "swith", "swith", "swith")
# draw subgraph
for key in aData:
(aHost, aNodes, aLinks) = key
draw_host(g, aHost, aNodes, aLinks)
# save file
gv.write(g, "draw.dot")
#generate graphic
gv.layout(g, "dot")
gv.render(g, "png", "l2_topology.png")
gv.rm(g)
def draw_graph(aData):
g = gv.digraph("G")
#gv.setv(g, "label", "TEST")
#gv.setv(g, "rankdir", "LR")
# Set node style
#n = gv.protonode(g0)
#gv.setv(n, "shape", "ellipse")
# draw notes
draw_note(g)
# draw one common node: swith
#draw_node(g, "swith", "swith", "swith")
# draw subgraph
for key in aData:
(aHost, aNodes, aLinks) = key
draw_host(g, aHost, aNodes, aLinks)
# save file
gv.write(g, "draw.dot")
#generate graphic
gv.layout(g, "dot")
gv.render(g, "png", "l2_topology.png")
gv.rm(g)
#!/usr/bin/python
import gv
g = gv.digraph("G")
n = gv.node(g, "hello")
m = gv.node(g, "world")
e = gv.edge(n, m)
gv.layout(g, "dot")
gv.render(g, "png", "gv_test.png")
gv.rm(g)
#!/usr/bin/python
import gv
g = gv.digraph("G")
print gv.setv(g, "aaa", "xxx")
print gv.getv(g, "aaa")
n = gv.node(g, "hello")
print gv.getv(n, "label")
print gv.setv(n, "aaa", "xxx")
print gv.getv(n, "aaa")
m = gv.node(g, "world")
print gv.getv(m, "aaa")
e = gv.edge(n, m)
print gv.setv(e, "aaa", "xxx")
print gv.getv(e, "aaa")
gv.rm(e)
gv.rm(m)
gv.rm(n)
gv.rm(g)
g = gv.readstring("digraph G {a->b}")
gv.rm(g)
g = gv.read("hello.gv")
gv.layout(g, "dot")
gv.render(g, "png", "hello.png")
gv.rm(g)
def graph_draw(g,
pos=None,
size=(15, 15),
pin=False,
layout="neato",
maxiter=None,
ratio="fill",
overlap=False,
splines=False,
mode="major",
vsize=0.1,
penwidth=1.0,
eweight=None,
ewidth=None,
gprops={},
vprops={},
eprops={},
vcolor=None,
ecolor=None,
vcmap=matplotlib.cm.jet,
vnorm=True,
ecmap=matplotlib.cm.jet,
enorm=True,
output="",
output_format="auto",
returngv=False,
fork=False,
seed=0):
"""Draw a graph using graphviz."""
if output != "":
output = os.path.expanduser(output)
# check opening file for writing, since graphview will bork if it is not
# possible to open file
if os.path.dirname(output) != "" and \
not os.access(os.path.dirname(output), os.W_OK):
raise IOError("cannot write to " + os.path.dirname(output))
if g.is_directed():
gvg = gv.digraph("G")
else:
gvg = gv.graph("G")
# main graph properties
gv.setv(gvg, "outputorder", "edgesfirst")
gv.setv(gvg, "mode", mode)
if overlap == False:
if layout == "neato" and mode == "ipsep":
overlap = "ipsep"
else:
overlap = "false"
else:
overlap = "true"
if isinstance(overlap, str):
gv.setv(gvg, "overlap", overlap)
if splines:
gv.setv(gvg, "splines", "true")
gv.setv(gvg, "ratio", str(ratio))
gv.setv(gvg, "size",
"%f,%f" % (size[0] / 2.54, size[1] / 2.54)) # centimeters
if maxiter != None:
gv.setv(gvg, "maxiter", str(maxiter))
if seed != 0:
if type(seed) == int:
gv.setv(gvg, "start", "%d" % seed)
else:
gv.setv(gvg, "start", seed)
# apply all user supplied properties
for k, val in gprops.iteritems():
if isinstance(val, PropertyMap):
gv.setv(gvg, k, str(val[g]))
else:
gv.setv(gvg, k, str(val))
# normalize color properties
if vcolor != None and not isinstance(vcolor, str):
minmax = [float("inf"), -float("inf")]
for v in g.vertices():
c = vcolor[v]
minmax[0] = min(c, minmax[0])
minmax[1] = max(c, minmax[1])
if minmax[0] == minmax[1]:
minmax[1] += 1
if vnorm:
vnorm = matplotlib.colors.normalize(vmin=minmax[0], vmax=minmax[1])
if ecolor != None and not isinstance(ecolor, str):
minmax = [float("inf"), -float("inf")]
for e in g.edges():
c = ecolor[e]
minmax[0] = min(c, minmax[0])
minmax[1] = max(c, minmax[1])
if minmax[0] == minmax[1]:
minmax[1] += 1
if enorm:
enorm = matplotlib.colors.normalize(vmin=minmax[0], vmax=minmax[1])
nodes = []
edges = []
# add nodes
for v in g.vertices():
n = gv.node(gvg, str(g.vertex_index[v]))
if type(vsize) != tuple:
vw = vh = vsize
else:
vw, vh = vsize
if type(vw) == PropertyMap:
vw = vw[v]
if type(vh) == PropertyMap:
vh = vh[v]
if type(vw) == str and vw == "in":
vw = v.in_degree()
if type(vw) == str and vw == "out":
vw = v.out_degree()
if type(vw) == str and vw == "total":
vw = v.in_degree() + v.out_degree()
if type(vh) == str and vh == "in":
vh = v.in_degree()
if type(vh) == str and vh == "out":
vh = v.out_degree()
if type(vh) == str and vh == "total":
vh = v.in_degree() + v.out_degree()
gv.setv(n, "width", "%g" % vw)
gv.setv(n, "height", "%g" % vh)
gv.setv(n, "style", "filled")
gv.setv(n, "color", "black")
# apply color
if vcolor != None:
if isinstance(vcolor, str):
gv.setv(n, "fillcolor", vcolor)
else:
color = tuple(
[int(c * 255.0) for c in vcmap(vnorm(vcolor[v]))])
gv.setv(n, "fillcolor", "#%.2x%.2x%.2x%.2x" % color)
else:
gv.setv(n, "fillcolor", "red")
gv.setv(n, "label", "")
# user supplied position
if pos != None:
gv.setv(n, "pos", "%f,%f" % (pos[0][v], pos[1][v]))
gv.setv(n, "pin", str(pin))
# apply all user supplied properties
for k, val in vprops.iteritems():
if isinstance(val, PropertyMap):
gv.setv(n, k, str(val[v]))
else:
gv.setv(n, k, str(val))
nodes.append(n)
for e in g.edges():
ge = gv.edge(nodes[g.vertex_index[e.source()]],
nodes[g.vertex_index[e.target()]])
gv.setv(ge, "arrowsize", "0.3")
if g.is_directed():
gv.setv(ge, "arrowhead", "vee")
# apply color
if ecolor != None:
if isinstance(ecolor, str):
gv.setv(ge, "color", ecolor)
else:
color = tuple(
[int(c * 255.0) for c in ecmap(enorm(ecolor[e]))])
gv.setv(ge, "color", "#%.2x%.2x%.2x%.2x" % color)
# apply weight
if eweight != None:
if isinstance(eweight, PropertyMap):
gv.setv(ge, "weight", str(eweight[e]))
else:
gv.setv(ge, "weight", str(eweight))
# apply width
if ewidth != None:
if isinstance(ewidth, PropertyMap):
gv.setv(ge, "penwidth", str(ewidth[e]))
else:
gv.setv(ge, "penwidth", str(ewidth))
# apply all user supplied properties
for k, v in eprops.iteritems():
if isinstance(v, PropertyMap):
gv.setv(ge, k, str(v[e]))
else:
gv.setv(ge, k, str(v))
edges.append(ge)
gv.layout(gvg, layout)
gv.render(gvg, "dot", "/dev/null") # retrieve postitions
if pos == None:
pos = (g.new_vertex_property("double"),
g.new_vertex_property("double"))
for n in xrange(0, len(nodes)):
p = gv.getv(nodes[n], "pos")
p = p.split(",")
pos[0][g.vertex(n)] = float(p[0])
pos[1][g.vertex(n)] = float(p[1])
if output_format == "auto":
if output == "":
output_format = "xlib"
else:
output_format = output.split(".")[-1]
# if using xlib we need to fork the process, otherwise good ol' graphviz
# will call exit() when the window is closed
if output_format == "xlib" or fork:
pid = os.fork()
if pid == 0:
gv.render(gvg, output_format, output)
os._exit(0) # since we forked, it's good to be sure
if output_format != "xlib":
os.wait()
else:
gv.render(gvg, output_format, output)
if returngv:
return pos, gv
else:
gv.rm(gvg)
del gvg
return pos
#!/usr/bin/python
import gv
g = gv.digraph("G")
print gv.setv(g,"aaa","xxx")
print gv.getv(g,"aaa")
n = gv.node(g,"hello")
print gv.getv(n,"label")
print gv.setv(n,"aaa","xxx")
print gv.getv(n,"aaa")
m = gv.node(g,"world")
print gv.getv(m,"aaa")
e = gv.edge(n,m)
print gv.setv(e,"aaa","xxx")
print gv.getv(e,"aaa")
gv.rm(e)
gv.rm(m)
gv.rm(n)
gv.rm(g)
g = gv.readstring("digraph G {a->b}")
gv.rm(g)
g = gv.read("hello.gv")
gv.layout(g, "dot")
gv.render(g, "png", "hello.png")
gv.rm(g)
def graph_draw(g, pos=None, size=(15,15), pin=False, layout="neato",
maxiter=None, ratio="fill", overlap=False, splines=False,
mode="major", vsize=0.1, penwidth=1.0, eweight=None, ewidth=None,
gprops={}, vprops={}, eprops={}, vcolor=None, ecolor=None,
vcmap=matplotlib.cm.jet, vnorm=True, ecmap=matplotlib.cm.jet,
enorm=True, output="", output_format="auto", returngv=False,
fork=False, seed=0):
"""Draw a graph using graphviz."""
if output != "":
output = os.path.expanduser(output)
# check opening file for writing, since graphview will bork if it is not
# possible to open file
if os.path.dirname(output) != "" and \
not os.access(os.path.dirname(output), os.W_OK):
raise IOError("cannot write to " + os.path.dirname(output))
if g.is_directed():
gvg = gv.digraph("G")
else:
gvg = gv.graph("G")
# main graph properties
gv.setv(gvg,"outputorder", "edgesfirst")
gv.setv(gvg,"mode", mode)
if overlap == False:
if layout == "neato" and mode == "ipsep":
overlap = "ipsep"
else:
overlap = "false"
else:
overlap = "true"
if isinstance(overlap,str):
gv.setv(gvg,"overlap", overlap)
if splines:
gv.setv(gvg,"splines", "true")
gv.setv(gvg,"ratio", str(ratio))
gv.setv(gvg,"size", "%f,%f" % (size[0]/2.54,size[1]/2.54)) # centimeters
if maxiter != None:
gv.setv(gvg,"maxiter", str(maxiter))
if seed != 0:
if type(seed) == int:
gv.setv(gvg, "start", "%d" % seed)
else:
gv.setv(gvg, "start", seed)
# apply all user supplied properties
for k,val in gprops.iteritems():
if isinstance(val, PropertyMap):
gv.setv(gvg, k, str(val[g]))
else:
gv.setv(gvg, k, str(val))
# normalize color properties
if vcolor != None and not isinstance(vcolor, str):
minmax = [float("inf"), -float("inf")]
for v in g.vertices():
c = vcolor[v]
minmax[0] = min(c,minmax[0])
minmax[1] = max(c,minmax[1])
if minmax[0] == minmax[1]:
minmax[1] += 1
if vnorm:
vnorm = matplotlib.colors.normalize(vmin=minmax[0], vmax=minmax[1])
if ecolor != None and not isinstance(ecolor, str):
minmax = [float("inf"), -float("inf")]
for e in g.edges():
c = ecolor[e]
minmax[0] = min(c,minmax[0])
minmax[1] = max(c,minmax[1])
if minmax[0] == minmax[1]:
minmax[1] += 1
if enorm:
enorm = matplotlib.colors.normalize(vmin=minmax[0], vmax=minmax[1])
nodes = []
edges = []
# add nodes
for v in g.vertices():
n = gv.node(gvg,str(g.vertex_index[v]))
if type(vsize) != tuple:
vw = vh = vsize
else:
vw, vh = vsize
if type(vw) == PropertyMap:
vw = vw[v]
if type(vh) == PropertyMap:
vh = vh[v]
if type(vw) == str and vw == "in":
vw = v.in_degree()
if type(vw) == str and vw == "out":
vw = v.out_degree()
if type(vw) == str and vw == "total":
vw = v.in_degree() + v.out_degree()
if type(vh) == str and vh == "in":
vh = v.in_degree()
if type(vh) == str and vh == "out":
vh = v.out_degree()
if type(vh) == str and vh == "total":
vh = v.in_degree() + v.out_degree()
gv.setv(n, "width", "%g" % vw)
gv.setv(n, "height", "%g" % vh)
gv.setv(n, "style", "filled")
gv.setv(n, "color", "black")
# apply color
if vcolor != None:
if isinstance(vcolor,str):
gv.setv(n, "fillcolor", vcolor)
else:
color = tuple([int(c*255.0) for c in vcmap(vnorm(vcolor[v]))])
gv.setv(n, "fillcolor", "#%.2x%.2x%.2x%.2x" % color)
else:
gv.setv(n, "fillcolor", "red")
gv.setv(n, "label", "")
# user supplied position
if pos != None:
gv.setv(n, "pos", "%f,%f" % (pos[0][v],pos[1][v]))
gv.setv(n, "pin", str(pin))
# apply all user supplied properties
for k,val in vprops.iteritems():
if isinstance(val, PropertyMap):
gv.setv(n, k, str(val[v]))
else:
gv.setv(n, k, str(val))
nodes.append(n)
for e in g.edges():
ge = gv.edge(nodes[g.vertex_index[e.source()]],
nodes[g.vertex_index[e.target()]])
gv.setv(ge, "arrowsize", "0.3")
if g.is_directed():
gv.setv(ge, "arrowhead", "vee")
# apply color
if ecolor != None:
if isinstance(ecolor,str):
gv.setv(ge, "color", ecolor)
else:
color = tuple([int(c*255.0) for c in ecmap(enorm(ecolor[e]))])
gv.setv(ge, "color", "#%.2x%.2x%.2x%.2x" % color)
# apply weight
if eweight != None:
if isinstance(eweight, PropertyMap):
gv.setv(ge, "weight", str(eweight[e]))
else:
gv.setv(ge, "weight", str(eweight))
# apply width
if ewidth != None:
if isinstance(ewidth, PropertyMap):
gv.setv(ge, "penwidth", str(ewidth[e]))
else:
gv.setv(ge, "penwidth", str(ewidth))
# apply all user supplied properties
for k,v in eprops.iteritems():
if isinstance(v, PropertyMap):
gv.setv(ge, k, str(v[e]))
else:
gv.setv(ge, k, str(v))
edges.append(ge)
gv.layout(gvg, layout)
gv.render(gvg, "dot", "/dev/null") # retrieve postitions
if pos == None:
pos = (g.new_vertex_property("double"), g.new_vertex_property("double"))
for n in xrange(0, len(nodes)):
p = gv.getv(nodes[n], "pos")
p = p.split(",")
pos[0][g.vertex(n)] = float(p[0])
pos[1][g.vertex(n)] = float(p[1])
if output_format == "auto":
if output == "":
output_format = "xlib"
else:
output_format = output.split(".")[-1]
# if using xlib we need to fork the process, otherwise good ol' graphviz
# will call exit() when the window is closed
if output_format == "xlib" or fork:
pid = os.fork()
if pid == 0:
gv.render(gvg, output_format, output)
os._exit(0) # since we forked, it's good to be sure
if output_format != "xlib":
os.wait()
else:
gv.render(gvg, output_format, output)
if returngv:
return pos, gv
else:
gv.rm(gvg)
del gvg
return pos
#!/usr/bin/python
import gv
g = gv.digraph("G")
n = gv.node(g,"hello")
m = gv.node(g,"world")
e = gv.edge(n,m)
gv.layout(g, "dot")
gv.render(g, "png", "gv_test.png")
gv.rm(g)
