Remove nodes from graphs?

[squeetus]

Is there a mechanism for removing graph nodes in Bridges?

I tried the following, which seems to remove the node from the graph, but causes a null pointer exception when I subsequently call Bridges.visualize();

g.getVertices().remove("node10");

[krs-world]

Dont think so. As it would require making sure the links coming to it and from it are removed. The latter is easy but the former requires some work.

    -- krs

On 1/3/19 5:18 PM, David Burlinson wrote:

Is there a mechanism for removing graph nodes in Bridges?

I tried the following, which seems to remove the node from the graph, but causes a null pointer exception when I subsequently call Bridges.visualize();

|g.getVertices().remove("node10");|

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/krs-world/bridges/issues/128, or mute the thread https://github.com/notifications/unsubscribe-auth/AFZSODASW6HtJ0CnX_o3pR-DV2GDui82ks5u_oHRgaJpZM4Zo2-K.

[esaule]

That could be a useful feature. But maybe more of a future development. Or do we need this for something?

[krs-world]

No, when we were thinking of DS courses, I didnt think of doing this.. most of our users barely get to graphs - I was the only one doing this to some extent. But as  we extend Bridges to algorithms and more senior courses, something we might want.

    -- krs

On 1/3/19 10:33 PM, Erik Saule wrote:

That could be a useful feature. But maybe more of a future development. Or do we need this for something?

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/krs-world/bridges/issues/128#issuecomment-451345820, or mute the thread https://github.com/notifications/unsubscribe-auth/AFZSOEYtCrlyxhYuhWv9uB5pBnASDhhmks5u_suXgaJpZM4Zo2-K.

-- Kalpathi Subramanian Ph: 704 687 8579 Associate Professor Email: krs@uncc.edu Dept of Computer Science Web:http://webpages.uncc.edu/krs The University of North Carolina Charlotte, NC 28202-0001

[squeetus]

This is not critical, we can discuss approaches later.

[krs-world]

Would algorithms courses require restructuring graphs, requiring node deletion? Would require some work, but this is the time to do it.