[Jung-support] [Open Discussion] Updating visualization after deleting E, V

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The following forum message was posted by yuruani at http://sourceforge.net/projects/jung/forums/forum/252062/topic/5897299:


Hi. I am creating a network with Jung using FRLayout and a DirectedSparseGraph.
The network first appears fine. Then I want to draw another network on
pressing a button.
The action is done like this:
Edges and vertices from the graph are removed from the graph, new vertices and
edges
are created and added to it,
the container gets revalidated and the main content pane gets updated.

Once that happens, a new network appears, but this time there is
really no layout, everything
is spread randomly.

What am I doing wrong? Thanks