ScoDocMM/misc/testpydot.py

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2020-09-26 16:19:37 +02:00
# essai pydot (bug ?)
# EV, sept 2011
import pydot
print 'pydot version:', pydot.__version__
g = pydot.Dot('graphname')
g.add_node(pydot.Node('a'))
g.add_node(pydot.Node('b'))
n = g.get_node('a')
print n
print 'nodes names = %s' % [ x.get_name() for x in g.get_node_list() ]
edges = [ ('a','b'), ('b','c'), ('c','d') ]
g = pydot.graph_from_edges(edges)
print 'nodes names = %s' % [ x.get_name() for x in g.get_node_list() ]
if not len(g.get_node_list()):
print 'bug: empty node list !' # incompatibility versions python / pydot
# Les fleches ?
for (src_id, dst_id) in edges:
e = g.get_edge(src_id, dst_id)
e.set('arrowhead', 'normal')
e.set( 'arrowsize', 2 )
e.set_label( str( (src_id, dst_id) ) )
e.set_fontname('Helvetica')
e.set_fontsize(8.0)
g.write_jpeg('/tmp/graph_from_edges_dot.jpg', prog='dot') # ok sur ScoDoc / Debian 5, pas de fleches en Debian 6
# cf https://www-lipn.univ-paris13.fr/projects/scodoc/ticket/190