Ok. Will do. I saw the place in the code, but haven’t managed to get the code 
to build, yet. 

> On Jun 29, 2018, at 9:03 AM, Joel Bernstein <joels...@gmail.com> wrote:
> 
> Hi,
> 
> Currently the nodes expression doesn't have this capability. Feel free to
> make a feature request on jira. This sounds like a fairly easy feature to
> add.
> 
> 
> 
> Joel Bernstein
> http://joelsolr.blogspot.com/
> 
> On Wed, Jun 27, 2018 at 5:21 PM, Heidi McClure <
> heidi.mccl...@polarisalpha.com> wrote:
> 
>> Hello,
>> 
>> I am trying to export graph data from a Solr index (version 7.2) in a
>> format that can be imported to Gephi for visualization.  I'm getting
>> close!  Is there a way to add edge labels to the exports from this type of
>> command (see curl command that follows and sample outputs)?
>> 
>> Thanks in advance,
>> -heidi
>> 
>> Based on the examples found here: https://lucene.apache.org/
>> solr/guide/7_2/graph-traversal.html , this is working in my GDELT-based
>> data set query request:
>> 
>> curl --data-urlencode 'expr=nodes(gdelt_graph,
>>                                  nodes(gdelt_graph,
>>                                        walk="POLICE->Actor1Name_s",
>>                                        trackTraversal="true",
>>                                        gather="Actor2Name_s"),
>>                                  walk="node->Actor1Name_s",
>>                                  scatter="leaves,branches",
>>                                  trackTraversal="true",
>>                                  gather="Actor2Name_s")'
>> http://mymachine:8983/solr/gdelt_graph/graph
>> 
>> Output is like this (just a subset):
>> <?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";>
>> <graph id="G" edgedefault="directed">
>> <node id="POLICE">
>> <data key="field">node</data>
>> <data key="level">0</data>
>> </node>
>> <edge id="1"  source="BANGLADESH"  target="POLICE"/>
>> <node id="HOSPITAL">
>> <data key="field">Actor2Name_s</data>
>> <data key="level">1</data>
>> </node>
>> <edge id="2"  source="POLICE"  target="HOSPITAL"/>
>> <node id="UNITED STATES">
>> <data key="field">Actor2Name_s</data>
>> <data key="level">1</data>
>> </node>
>> <edge id="3"  source="UNITED STATES"  target="UNITED STATES"/>
>> <edge id="4"  source="AFRICA"  target="UNITED STATES"/>
>> <edge id="5"  source="POLICE"  target="UNITED STATES"/>
>> 
>> And I'd like to have a key for label and the data tag on the edges so that
>> I can get the Labels into Gephi.  Does anyone know if this can be done?
>> Below is example of what I mean.  Notice the key for label at the top of
>> the file and the "This is an edge description" entries on two of the edges
>> (ids 1 and 2).
>> 
>> <?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 id="label" for="edge" attr.name="label" attr.type="string"/>
>>    <graph id="G" edgedefault="directed">
>>        <node id="POLICE">
>>            <data key="field">node</data>
>>            <data key="level">0</data>
>>        </node>
>>        <edge id="1"  source="BANGLADESH"  target="POLICE" label="foo">
>>            <data key="label">This is an edge description.</data>
>>        </edge>
>>        <node id="HOSPITAL">
>>            <data key="field">Actor2Name_s</data>
>>            <data key="level">1</data>
>>        </node>
>>        <edge id="2"  source="POLICE"  target="HOSPITAL">
>>            <data key="label">This is an edge description.</data>
>>        </edge>
>>        <node id="UNITED STATES">
>>            <data key="field">Actor2Name_s</data>
>>            <data key="level">1</data>
>>        </node>
>>        <edge id="3"  source="UNITED STATES"  target="UNITED STATES"/>
>>        <edge id="4"  source="AFRICA"  target="UNITED STATES"/>
>>        <edge id="5"  source="POLICE"  target="UNITED STATES"/>
>> 
>> 

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