Re: [graphviz-interest] Moving nodes and edges between [sub]graphs using the gv library

Yes, except that presumably the reason for moving it to a subgraph is so 
that you inherit a number of the attributes from the subgraph tree, so 
you wouldn't need to rewrite those.

John




On 02/27/2014 05:08 PM, Sparr wrote:
> So, to move a node from one subgraph to another I would need to create
> a new node, copy all the attributes, create copies of all the existing
> edges to/from the old node, copy all of their attributes, then delete
> the old node (and the old edges?)?
>
> On Thu, Feb 27, 2014 at 5:06 PM, John Ellson <[email protected]> wrote:
>> On 02/27/2014 04:58 PM, Sparr wrote:
>>> On Thu, Feb 27, 2014 at 4:28 PM, John Ellson <[email protected]>
>>> wrote:
>>>> On 02/27/2014 04:11 PM, Sparr wrote:
>>>>> What I would like to do is assemble a graph, then selectively
>>>>> "promote" certain nodes and edges into subgraphs afterwards.
>>>> Certainly you can manipulate the attributes of nodes and subgraphs in the
>>>> abstract graph from one of the language bindings, or from gvpr.
>>> I am unsure how to apply this answer. Is there an attribute of a node
>>> that specifies which subgraph it belongs to, or vice versa?
>>
>> You can obtain a list of member nodes from a subgraph, and add/del nodes to
>> a subgraph.
>>
>> To move you would have to delete from whatever graph it was in before, and
>> add to the subgraph.
>>
>> A node can't be a direct member of more than one subgraph. Subgraphs can be
>> added to other subgraphs, forming a tree,
>> so indirectly a node is a member of all its parent subgraphs, and the parent
>> graph.
>>
>> John

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