Graph Union in Networkx










1















I have two graphs:



G.nodes() = [0,3]
H.nodes() = [1,2,3,4]


I am trying to merge the graphs together while only relabeling the nodes of H and maintaining the same labels for G so the resulting graph would have the following nodes:



U.nodes() = [0,3,1,2,5,4]


Where the first two elements are from G and everything else is from H given that there is a conflict of names at node 3 it gets renamed to the next available integer.



disjoint_union from networkx doesn't work because G.nodes() get relabeled to [0,1].



Any help is appreciated!










share|improve this question

















  • 1





    take a look at nx.union with the rename optional argument and then convert_node_labels_to_integers. (anyone interested - feel free to build on this to give a full answer)

    – Joel
    Nov 13 '18 at 17:51
















1















I have two graphs:



G.nodes() = [0,3]
H.nodes() = [1,2,3,4]


I am trying to merge the graphs together while only relabeling the nodes of H and maintaining the same labels for G so the resulting graph would have the following nodes:



U.nodes() = [0,3,1,2,5,4]


Where the first two elements are from G and everything else is from H given that there is a conflict of names at node 3 it gets renamed to the next available integer.



disjoint_union from networkx doesn't work because G.nodes() get relabeled to [0,1].



Any help is appreciated!










share|improve this question

















  • 1





    take a look at nx.union with the rename optional argument and then convert_node_labels_to_integers. (anyone interested - feel free to build on this to give a full answer)

    – Joel
    Nov 13 '18 at 17:51














1












1








1








I have two graphs:



G.nodes() = [0,3]
H.nodes() = [1,2,3,4]


I am trying to merge the graphs together while only relabeling the nodes of H and maintaining the same labels for G so the resulting graph would have the following nodes:



U.nodes() = [0,3,1,2,5,4]


Where the first two elements are from G and everything else is from H given that there is a conflict of names at node 3 it gets renamed to the next available integer.



disjoint_union from networkx doesn't work because G.nodes() get relabeled to [0,1].



Any help is appreciated!










share|improve this question














I have two graphs:



G.nodes() = [0,3]
H.nodes() = [1,2,3,4]


I am trying to merge the graphs together while only relabeling the nodes of H and maintaining the same labels for G so the resulting graph would have the following nodes:



U.nodes() = [0,3,1,2,5,4]


Where the first two elements are from G and everything else is from H given that there is a conflict of names at node 3 it gets renamed to the next available integer.



disjoint_union from networkx doesn't work because G.nodes() get relabeled to [0,1].



Any help is appreciated!







python-3.x union networkx






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 13 '18 at 17:34









mb567mb567

351211




351211







  • 1





    take a look at nx.union with the rename optional argument and then convert_node_labels_to_integers. (anyone interested - feel free to build on this to give a full answer)

    – Joel
    Nov 13 '18 at 17:51













  • 1





    take a look at nx.union with the rename optional argument and then convert_node_labels_to_integers. (anyone interested - feel free to build on this to give a full answer)

    – Joel
    Nov 13 '18 at 17:51








1




1





take a look at nx.union with the rename optional argument and then convert_node_labels_to_integers. (anyone interested - feel free to build on this to give a full answer)

– Joel
Nov 13 '18 at 17:51






take a look at nx.union with the rename optional argument and then convert_node_labels_to_integers. (anyone interested - feel free to build on this to give a full answer)

– Joel
Nov 13 '18 at 17:51













1 Answer
1






active

oldest

votes


















1














Like @Joel states:



import networkx as nx
import matplotlib.pyplot as plt

_,ax = plt.subplots(1,3, figsize=(10,8))
G = nx.Graph()
G.add_nodes_from([0,3])
nx.draw_networkx(G, ax=ax[0], title='G')

H = nx.Graph()
H.add_nodes_from([1,2,3,4])
nx.draw_networkx(H, ax=ax[1])

U = nx.union(G, H, rename=('G-','H-'))
nx.draw_networkx(U, ax=ax[2])
print(U.nodes())


Output:



NodeView(('G-0', 'G-3', 'H-1', 'H-2', 'H-3', 'H-4'))


enter image description here






share|improve this answer






















    Your Answer






    StackExchange.ifUsing("editor", function ()
    StackExchange.using("externalEditor", function ()
    StackExchange.using("snippets", function ()
    StackExchange.snippets.init();
    );
    );
    , "code-snippets");

    StackExchange.ready(function()
    var channelOptions =
    tags: "".split(" "),
    id: "1"
    ;
    initTagRenderer("".split(" "), "".split(" "), channelOptions);

    StackExchange.using("externalEditor", function()
    // Have to fire editor after snippets, if snippets enabled
    if (StackExchange.settings.snippets.snippetsEnabled)
    StackExchange.using("snippets", function()
    createEditor();
    );

    else
    createEditor();

    );

    function createEditor()
    StackExchange.prepareEditor(
    heartbeatType: 'answer',
    autoActivateHeartbeat: false,
    convertImagesToLinks: true,
    noModals: true,
    showLowRepImageUploadWarning: true,
    reputationToPostImages: 10,
    bindNavPrevention: true,
    postfix: "",
    imageUploader:
    brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
    contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
    allowUrls: true
    ,
    onDemand: true,
    discardSelector: ".discard-answer"
    ,immediatelyShowMarkdownHelp:true
    );



    );













    draft saved

    draft discarded


















    StackExchange.ready(
    function ()
    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53286610%2fgraph-union-in-networkx%23new-answer', 'question_page');

    );

    Post as a guest















    Required, but never shown

























    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    1














    Like @Joel states:



    import networkx as nx
    import matplotlib.pyplot as plt

    _,ax = plt.subplots(1,3, figsize=(10,8))
    G = nx.Graph()
    G.add_nodes_from([0,3])
    nx.draw_networkx(G, ax=ax[0], title='G')

    H = nx.Graph()
    H.add_nodes_from([1,2,3,4])
    nx.draw_networkx(H, ax=ax[1])

    U = nx.union(G, H, rename=('G-','H-'))
    nx.draw_networkx(U, ax=ax[2])
    print(U.nodes())


    Output:



    NodeView(('G-0', 'G-3', 'H-1', 'H-2', 'H-3', 'H-4'))


    enter image description here






    share|improve this answer



























      1














      Like @Joel states:



      import networkx as nx
      import matplotlib.pyplot as plt

      _,ax = plt.subplots(1,3, figsize=(10,8))
      G = nx.Graph()
      G.add_nodes_from([0,3])
      nx.draw_networkx(G, ax=ax[0], title='G')

      H = nx.Graph()
      H.add_nodes_from([1,2,3,4])
      nx.draw_networkx(H, ax=ax[1])

      U = nx.union(G, H, rename=('G-','H-'))
      nx.draw_networkx(U, ax=ax[2])
      print(U.nodes())


      Output:



      NodeView(('G-0', 'G-3', 'H-1', 'H-2', 'H-3', 'H-4'))


      enter image description here






      share|improve this answer

























        1












        1








        1







        Like @Joel states:



        import networkx as nx
        import matplotlib.pyplot as plt

        _,ax = plt.subplots(1,3, figsize=(10,8))
        G = nx.Graph()
        G.add_nodes_from([0,3])
        nx.draw_networkx(G, ax=ax[0], title='G')

        H = nx.Graph()
        H.add_nodes_from([1,2,3,4])
        nx.draw_networkx(H, ax=ax[1])

        U = nx.union(G, H, rename=('G-','H-'))
        nx.draw_networkx(U, ax=ax[2])
        print(U.nodes())


        Output:



        NodeView(('G-0', 'G-3', 'H-1', 'H-2', 'H-3', 'H-4'))


        enter image description here






        share|improve this answer













        Like @Joel states:



        import networkx as nx
        import matplotlib.pyplot as plt

        _,ax = plt.subplots(1,3, figsize=(10,8))
        G = nx.Graph()
        G.add_nodes_from([0,3])
        nx.draw_networkx(G, ax=ax[0], title='G')

        H = nx.Graph()
        H.add_nodes_from([1,2,3,4])
        nx.draw_networkx(H, ax=ax[1])

        U = nx.union(G, H, rename=('G-','H-'))
        nx.draw_networkx(U, ax=ax[2])
        print(U.nodes())


        Output:



        NodeView(('G-0', 'G-3', 'H-1', 'H-2', 'H-3', 'H-4'))


        enter image description here







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 13 '18 at 20:36









        Scott BostonScott Boston

        52.9k72955




        52.9k72955



























            draft saved

            draft discarded
















































            Thanks for contributing an answer to Stack Overflow!


            • Please be sure to answer the question. Provide details and share your research!

            But avoid


            • Asking for help, clarification, or responding to other answers.

            • Making statements based on opinion; back them up with references or personal experience.

            To learn more, see our tips on writing great answers.




            draft saved


            draft discarded














            StackExchange.ready(
            function ()
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53286610%2fgraph-union-in-networkx%23new-answer', 'question_page');

            );

            Post as a guest















            Required, but never shown





















































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown

































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown







            Popular posts from this blog

            Top Tejano songwriter Luis Silva dead of heart attack at 64

            ReactJS Fetched API data displays live - need Data displayed static

            政党