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Normal Topic start node position (Read 3457 times)
kirri
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start node position
May 31st, 2011 at 1:13pm
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Hi Stoyo,
is it possible to put a start node on the top of the diagram? I am using LayeredLayout and I create the start node as the first of all nodes.
I attach an image where I circled the current position of a start node that i want to change
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https://docs.google.com/leaf?id=0B8vQshcp7q_QOTY1YWM4NTEtOGUxMy00MDAyLWFmNDEtOGU4MWRmMTc5OWM1&hl=en_US


Thanks  very much for all your help
Michal
  
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Stoyo
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Re: start node position
Reply #1 - May 31st, 2011 at 1:37pm
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Hi Michal,

Try running the layout with EnforceLinkFlow set to false. It assigns node layers along the longest path in the graph then, which should be the start-end path in this case. You could also try setting LayeredLayoutTraits.Layer to 0 for that node in the hashtable returned by node.getLayoutTraits().

I hope that helps,
Stoyan
  
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kirri
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Re: start node position
Reply #2 - May 31st, 2011 at 2:08pm
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Thanks for reply,

but I tried both methods and it did not solve the problem. Is there anything else I can try please?

Michal
  
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Stoyo
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Re: start node position
Reply #3 - Jun 1st, 2011 at 6:17am
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LayeredLayout.setEnforceLinkFlow(false) worked for me, the red node below corresponds to your start node and I think I have drawn exactly the same graph as the one from your image:



Also note that you must call setEnableCustomLayers(true) in order to use custom layers specified via LayoutTraits, and that custom layers can only be used when EnforceLinkFlow is set to false anyway.

I hope that helps,
Stoyan
  
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kirri
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Re: start node position
Reply #4 - Jun 1st, 2011 at 10:33am
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it works.

Thanks very much. You always have a solution Cheesy
  
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