I keep losing my node labels on graph export

asked 2016-01-16 03:21:55 +0100

Malte
45 ●1 ●3 ●8

updated 2016-06-06 21:26:06 +0100

FrédéricC

5311 ●4 ●44 ●118

Hello! I often export Sage graphs by using networkx. This is a typical example:

import networkx
g = graphs.HerschelGraph()
h = g.networkx_graph()
networkx.write_graphml(h,'HerschelGraph.graphml')

However, when I open the graphml-file in the YEd Graph Editor (which is my favorite software for displaying graphs) I find that the node labels (that are clearly existent in the Sage version of the graph) have disappeared forever. Everything else works fine. Assuming that this is Sage's fault rather than the graph editor's fault: What can I do to export the node labels as well?

Thank you very much for your help.

Malte

answered 2016-01-16 11:23:58 +0100

tmonteil
27423 ●31 ●204 ●517 http://wiki.sagemath.o...

Looking at the file prodiced, the labels (and even the name) of the graph do appear:

<?xml version='1.0' encoding='utf-8'?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
  <key attr.name="multiedges" attr.type="boolean" for="graph" id="d2" />
  <key attr.name="name" attr.type="string" for="graph" id="d1" />
  <key attr.name="selfloops" attr.type="boolean" for="graph" id="d0" />
  <graph edgedefault="undirected">
    <data key="d0">False</data>
    <data key="d1">Herschel graph</data>
    <data key="d2">False</data>
    <node id="0" />
    <node id="1" />
    <node id="2" />
    <node id="3" />
    <node id="4" />
    <node id="5" />
    <node id="6" />
    <node id="7" />
    <node id="8" />
    <node id="9" />
    <node id="10" />
    <edge source="0" target="1" />
    <edge source="0" target="3" />
    <edge source="0" target="4" />
    <edge source="1" target="2" />
    <edge source="1" target="5" />
    <edge source="1" target="6" />
    <edge source="2" target="3" />
    <edge source="2" target="7" />
    <edge source="3" target="8" />
    <edge source="3" target="9" />
    <edge source="4" target="9" />
    <edge source="4" target="5" />
    <edge source="5" target="10" />
    <edge source="6" target="10" />
    <edge source="6" target="7" />
    <edge source="7" target="8" />
    <edge source="8" target="10" />
    <edge source="9" target="10" />
  </graph>
</graphml>

Hencce i would rather say that there is an import issue.

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