Dear all, dear Andrea,
I take the opportunity of Andrea email to advertise a paper we have just
published with Vincent Bonhomme and Julien Claude.
Optimizing digitalization effort in morphometrics
Biology Methods and Protocols, Volume 5, Issue 1, 2020, bpaa023,
https://doi.org/10.1093/biomethods/bpaa023
This study is only about 2D and we compared 18 different analytical
approaches including landmarks, sliding semi-landmarks and outline
analyses (and linear measurements) using various R packages and settings.
We quantified intra and inter-operator measurement error in picturing
and landmarking and we contrast the amount of error with a biological
signal (2 groups discrimination).
We also looked at the effect of reducing the number of sliding
semi-landmark coordinates in both error and discrimination power.
All the very best
Allowen
Le 11/12/2020 à 12:45, andrea cardini a écrit :
Dear All,
I am looking for geometric morphometric papers where people compared,
in 2D photos, the magnitude of digitization error (same pics
landmarked twice or more) with that due to the orientation of the
specimens (two pics or more for each specimen). I'd like to know how
much variance the different sources accounted for and I am mainly
interested in this when applied to 'highly 3D' structures such as
vertebrate crania, mandibles, long bones etc.
Suggestions on refs or pdfs are very much appreciated.
Thanks in advance.
Cheers
Andrea
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Allowen EVIN
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Institut des Sciences de l'Evolution - Montpellier
Equipe: Dynamique de la biodiversité, anthropo-écologie
UMR 5554 - ISEM, CNRS, Université de Montpellier, IRD, EPHE
2 place Eugène Bataillon, CC065, bat. 21, 3eme étage
34095 Montpellier, Cedex 5, France
Tel : +33 (0)4 67 14 41 60
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