DrawGViz¶
- DrawGViz(Graph, Layout, PltFNm, Desc, NodeLabelH)¶
Draws a given Graph using a selected GraphViz Layout engine with nodes labeled. Creates a file with name PltFNm.
Parameters:
- Graph: graph (input)
A Snap.py graph or a network.
- Layout: TGVizLayout (input)
One of gvlDot, gvlNeato, gvlTwopi, gvlCirco, gvlSfdp. The type of layout for the graph.
- PltFNm: string (input)
Output filename (extension .ps, .png, .gif) determines the output format.
- Desc: string (input)
A string describing the visualization.
- NodeLabelH: TIntStrH, a hash table of int keys and string values (input)
Maps node ids to node labels.
Return value:
- None
The following example shows how to draw the graph for TNGraph, TUNGraph, and TNEANet:
import snap
Graph = snap.GenRndGnm(snap.PNGraph, 10, 50)
labels = snap.TIntStrH()
for NI in Graph.Nodes():
labels[NI.GetId()] = str(NI.GetId())
snap.DrawGViz(Graph, snap.gvlDot, "output.png", " ", labels)
UGraph = snap.GenRndGnm(snap.PUNGraph, 10, 50)
labels = snap.TIntStrH()
for NI in UGraph.Nodes():
labels[NI.GetId()] = str(NI.GetId())
snap.DrawGViz(UGraph, snap.gvlDot, "output.png", " ", labels)
Network = snap.GenRndGnm(snap.PNEANet, 10, 50)
labels = snap.TIntStrH()
for NI in Network.Nodes():
labels[NI.GetId()] = str(NI.GetId())
snap.DrawGViz(Network, snap.gvlDot, "output.png", " ", labels)