From: Matt Y. <dia...@gm...> - 2013-07-01 01:58:43
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It sounds like this concept is specifically (only?) used for rendering? How about making it specific and calling it a "render anchor" or some such? Cheers, Matt On Sat, Jun 29, 2013 at 5:03 PM, Ben Morris <be...@be...> wrote: > A few of us discussed this briefly at iEvoBio; it would be great to > have a concept similar to "has_Root", but for unrooted trees. Some > tree formats, such as Newick, represent rooted and unrooted trees > identically - an unrooted tree has a "pseudo-root" and is represented > the same way as a rooted tree. The position of this pseudo-root is > completely arbitrary. If a Newick tree is converted to CDAO and then > back to Newick, the resulting tree may appear to be "rooted" > differently than the original. While this is technically fine (since > it's unrooted, it shouldn't matter where the "pseudo-root" is placed), > it may be confusing or irritating to users. Having a property > cdao:has_PseudoRoot would ensure that the tree could be retrieved from > a triple store and converted back to a Newick tree without changing > the position of the pseudo-root - so users would get back a tree that > they could easily verify was identical to what they started with. > > Currently I'm using has_Root for unrooted trees; this is certainly > incorrect, as the pseudo-root is not a root. It's important to > distinguish between a true root and what's merely a starting point for > convenience but has no real meaning. > > > Ben Morris > PhD student, Ecology/Evolutionary Biology > University of North Carolina, Chapel Hill, NC > Mail: be...@be... | Twitter: @bendmorris > Web: www.bendmorris.com > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Windows: > > Build for Windows Store. > > http://p.sf.net/sfu/windows-dev2dev > _______________________________________________ > CDAO-discuss mailing list > CDA...@li... > https://lists.sourceforge.net/lists/listinfo/cdao-discuss |