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Darrel Hoffman


Joined: 11/15/2009 09:30:51
Messages: 7
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It should be possible for a link to both start and end on the same node. Right now, the way I do this is to leave one end of the link open-ended, and carefully adjust the beziers to make it look like it's connected to itself, but this causes problems if I ever move that node - I have to move the open end of the link as well.
Paul Miller


Joined: 05/12/2011 06:50:38
Messages: 7
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I'm just a little curious as to why you would want to link a node to itself.

Regards

PJM
Darrel Hoffman


Joined: 11/15/2009 09:30:51
Messages: 7
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One of my main uses for VUE is diagramming finite state machines. So I use any node to represent a discrete state, and links to represent changes to that state or actions that can occur. However, some actions result in a return to the same state. Think about a code parser - you come across say, a number, and you need to continue parsing digits until you reach something that is not a digit. It's useful to represent this on an FSM as a link that loops around and connects to itself. At any rate, it's fairly common in graph theory to allow for circular links, so I think that it's a serious limitation not to be able to do so.
Paul Miller


Joined: 05/12/2011 06:50:38
Messages: 7
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I had never thought of using VUE for state diagrams, but then I only started using VUE about three weeks ago so I am a newbie to all this.

Maybe a link to an intermediate node which then links back to the originating node, I haven't tried this yet, I wonder how small an unobtrusive you can make a node and if you can have two parallel paths. An experiment is in order I think.

Regards

PJM
Grant Robertson


Joined: 07/23/2009 00:23:04
Messages: 4
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Paul Miller wrote:Maybe a link to an intermediate node which then links back to the originating node, I haven't tried this yet, I wonder how small an unobtrusive you can make a node and if you can have two parallel paths.


This might look OK on the screen. However, if one were to try to process the diagram programatically, one would run into problems or have to make workarounds in the code to ignore the intervening node.
 
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