nodeRenderer.setMaxImageDimensions(100,100);
m_vis.setRendererFactory(new DefaultRendererFactory(nodeRenderer));
ActionList init = new ActionList();
init.add(new RandomLayout());
init.add(new DataMountainSizeAction());
m_vis.putAction("init", init);
ActionList update = new ActionList();
update.add(new DataMountainSizeAction());