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From: Beman Dawes (beman_at_[hidden])
Date: 1999-12-08 14:30:39

At 08:47 AM 12/8/99 -0500, Dave Abrahams wrote:

>A few other random thoughts:
>I think I've seen some posts suggesting that you should always be
able to
>get at the source node for an edge as well as the destination node.
I have
>some graphs in which that is difficult and some algorithms for which
it is
>I hate the names "head" and "tail" for edge start and end points.
They have
>the opposite meaning for the arrows that we usually use to draw
edges with
>(the head is the pointy end of the arrow).

In the digital geography industry, it is common to call them the
"from" and "to" nodes. Then you think of yourself as standing on the
"from" node, looking down the edge to the "to" node, and that also
defines the "left" and "right" sides of the edge.


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