Predicate function CHILDCOUNT() always returns 0 #34

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1. markhm commented on Jul 1, 2018

   

   markhm

   on Jul 1, 2018

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   It seems there is a bit more nuance to this.

   The CHILDCOUNT() and TREEDEPTH() functions work when used a in regular Predicate (e.g. to color nodes, see below), but nót to add an extra data column, e.g. like this:

   tree.addColumn("label_child_count", "CONCAT(name,' (',CHILDCOUNT(),')')");.
   

   Working example: https://i.imgur.com/8savFgU.png
2. alex-rind

   added a commit that references this issue on Jul 2, 2019

   tuples of graph's node table as node proxy tuples

   ...

   889ad9e
3. alex-rind commented on Jul 2, 2019

   

   alex-rind

   on Jul 2, 2019

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   That's indeed quite nuanced.

   The tree functions work with addColumn on a VisualTree:

   VisualTupleSet vt = m_vis.add(tree, t);
   vt.addColumn("label_child_count", "CONCAT([name],' (',TREEDEPTH(),')')");

   Alternatively, it would be necessary to change some code in prefuse's Graph class (cp. commit 889ad9e).