Re: [MORPHMET] representing pointy structure using semilandmarks

2019-03-19 Thread Anneke van Heteren
Dear Karla Shikev,

Have you tried digitising the tip of the pointy structure with a normal
Landmark, and semi-landmarks before and after it to digitise the rest of
the structure? This, of course, only works if the pointy structure is
visible in all your specimens.

Best wishes,

Anneke van Heteren

Op za 16 mrt. 2019 om 16:46 schreef Karla Shikev :

>
> Dear all,
>
> I've been trying to use sliding landmarks to represent the outlines of
> different species and then to use those data to project the shapes onto a
> morphospace (as in the Olsen et al. 2017). However, part of the outline
> involves a local pointy structure that is functionally important, but that
> simply disappears from the outlines of the morphospace. I tried to increase
> the number of landmarks, but the problem remains. Any help would be greatly
> appreciated.
>
> best,
>
> Karla
>
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Re: [MORPHMET] new paper: elephant seal nose-metrics

2019-03-19 Thread Mauro Cavalcanti
Dear Andrea,

Absolutely fascinating!

Well, although not using GM methods, the book by William B. Evans & Alexey
V. Yablokov, "Noninvasive Study of Mammalian Populations" (Sofia/Moscow:
Pensoft, 2004) provides a lot of interesting ideas and insights on the use
of analytical techniques for living, non-sedated animals in the field. GM
methods would offer a powerful contribution in this regard.

With warmest regards,

Em seg, 18 de mar de 2019 às 12:01, andrea cardini 
escreveu:

> Dear All,
> this out now: https://onlinelibrary.wiley.com/doi/abs/10./jzs.12276
> “Nose‐metrics” of wild southern elephant seal (Mirounga leonina) males
> using image analysis and geometric morphometrics
> JZSER, online first
>
> As far as I know, it's one of the few applications of GMM on data from
> naturally behaving animals photographed in the field. By the way, if
> anyone has references of this type of work (NB not on sedated animals),
> please I'd appreciate having a pdf.
>
> Thanks also to those who asked me reprints of the Evol. Biol. paper on
> spurious results in integration/modularity tests. Please, write me if
> you have no subscription and need the pdf, as it's not yet in my webpage.
>
> Cheers
>
> Andrea
>
> --
>
> Dr. Andrea Cardini
> Researcher, Dipartimento di Scienze Chimiche e Geologiche, Università di
> Modena e Reggio Emilia, Via Campi, 103 - 41125 Modena - Italy
> tel. 0039 059 2058472
>
> Adjunct Associate Professor, Centre for Forensic Anthropology, The
> University of Western Australia, 35 Stirling Highway, Crawley WA 6009,
> Australia
>
> E-mail address: alcard...@gmail.com, andrea.card...@unimore.it
> WEBPAGE: https://sites.google.com/site/alcardini/home/main
>
> FREE Yellow BOOK on Geometric Morphometrics:
> https://tinyurl.com/2013-Yellow-Book
>
> ESTIMATE YOUR GLOBAL FOOTPRINT:
> http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/
> SUPPORT: secondwarning.org
>
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>

-- 
Dr. Mauro J. Cavalcanti
E-mail: mauro...@gmail.com
Web: http://sites.google.com/site/maurobio
"Life is complex. It consists of real and imaginary parts."

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