docs: def plotGraph(self,mode="plain",nodes=None,filename="tgraph.png"):
          """Plot graph with nodes (iterable) into filename
          """
          if nodes==None:
              nodes=self.nodes
          else:
              nodes=[i for i in self.nodes if i in nodes]
          for node in self.nodes:
              n_=self.A.get_node(node)
              if mode=="plain":
                  nmode=1
              else:
                  nmode=-1
              pos="{},{}".format(self.xi[::nmode][self.nm.nodes_.index(node)],self.yi[::nmode][self.nm.nodes_.index(node)])
              n_.attr["pos"]=pos
              n_.attr["pin"]=True
              color='#%02x%02x%02x' % tuple([255*i for i in self.cm[int(self.clustering[n_]*255)][:-1]])
              n_.attr['fillcolor']= color
              n_.attr['fixedsize']=True
              n_.attr['width']=  abs(.1*(self.nm.degrees[n_]+  .5))
              n_.attr['height']= abs(.1*(self.nm.degrees[n_]+.5))
              n_.attr["label"]=""
              if node not in nodes:
                  n_.attr["style"]="invis"
              else:
                  n_.attr["style"]="filled"
          for e in self.edges:
              e.attr['penwidth']=3.4
              e.attr["arrowsize"]=1.5
              e.attr["arrowhead"]="lteeoldiamond"
              e.attr["style"]=""
              if sum([i in nodes for i in (e[0],e[1])])==2:
                  e.attr["style"]=""
              else:
                  e.attr["style"]="invis"
          tname="{}{}".format(self.basedir,filename)
          print(tname)
          self.A.draw(tname,prog="neato")