def testExportPrincipalImage():
print('*------- test exportRelationPCAImage --------*')
t = RandomCBPerformanceTableau(numberOfActions=10,
weightDistribution="equiobjectives")
g = BipolarOutrankingDigraph(t)
g.save('test')
g = Digraph('test')
g.showRelationTable()
g.exportPrincipalImage('bipolar', bgcolor='lightblue')
g.recodeValuation(0, 2)
g.exportPrincipalImage('monopolar',
pictureFormat='xfig',
fontcolor='black',
fontsize='1.2')
