Dear Diane, we published the last year this tool to articulate disarticulate 3D models, it's part of the Arothron R package https://anatomypubs.onlinelibrary.wiley.com/doi/abs/10.1002/ar.24077?af=R Anyway, I think if you use an external 3D model to estimate the sagittal plane you can introduce a bias into your data.
In your case, my suggestion is just to study the shape of the left and right temporal bones separately. If you want to evaluate the asymmetry you can: - mirror the left (or right) side (mirror function Morpho R package) - gpa step (opa, including or without scaling, rotonto function Morpho R package) between "mirrored left side" and "right side" - calculation of the distance (e.g., euclidean distance) between the two aligned landmark/semilandmarks configurations. To visualize the displacement between two aligned meshes (rotmesh.onto function) I suggest to use the function meshDist. This paper by Chris Klingenberg may be useful to you https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1558-5646.1998.tb02018.x Best, Antonio On Tue, 30 Jun 2020 at 15:04, Adams, Dean [EEOB] <[email protected]> wrote: > Diane, > > As I answered on the geomorph.google group, the package geomorph does not > have a 'bilateral missing' function. The 'estimate.missing' function allows > either TPS-based or regression-based landmark estimation. > > For bilateral options, one could see functions in the package LOST or > Morpho packages. > > Dean > > Dr. Dean C. Adams > Director of Graduate Education, EEB Program > Professor > Department of Ecology, Evolution, and Organismal Biology > Iowa State University > https://www.eeob.iastate.edu/faculty/adams/ > phone: 515-294-3834 > > -----Original Message----- > From: [email protected] <[email protected]> On Behalf > Of Diane Moya > Sent: Tuesday, June 30, 2020 7:30 AM > To: Morphmet <[email protected]> > Subject: [MORPHMET2] Higlhy fragmented collection - missing bilateral > symetry > > Hi everybody, > I am studying temporal morphological variation using 3Dgm in osteological > collections dating from the colonial period. Most of the collections from > this period are incomplete due to important fragmentagtion -only the > temporal region is rather well preserved. Moreover, temporals are isolated > from their cranium, both temporals are seldom present and to my knowledge > without midline landmarks it is impossible to estimate the symetry. I was > thinking about using a complete skull (same sex and geographic origin) and > « merging » the temporal I have with it to estimate the other side or > specific landmarks using missing bilateral function from the Rgeomorph > package. Are there any other options, or a function that can estimate > missing bilateral landmark (knowing that the temporals are not completly > symetrical)? > Thanks in advance > > -- > You received this message because you are subscribed to the Google Groups > "Morphmet" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/morphmet2/c59488a4-8cc1-48da-9b03-610fc489c212o%40googlegroups.com > . > > -- > You received this message because you are subscribed to the Google Groups > "Morphmet" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/morphmet2/CH2PR04MB66177D7388F4F8C0A57ACD41A26F0%40CH2PR04MB6617.namprd04.prod.outlook.com > . > -- Antonio Profico PhD Palaeohub – Department of Archaeology University of York morphomap mailing list: https://groups.google.com/forum/#!forum/morphomap Subscription: https://groups.google.com/forum/#!forum/morphomap/join Arothron mailing list: https://groups.google.com/forum/#!forum/arothron Subscription: https://groups.google.com/forum/#!forum/arothron/join MicroWeaR mailing list: https://groups.google.com/forum/#!forum/microwear Subscription: https://groups.google.com/forum/#!forum/microwear/join -- You received this message because you are subscribed to the Google Groups "Morphmet" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/morphmet2/CANuUiO%2BJi3BzEJmXr5gaXTqRrpUgA50pBgQzGs%2Bj6KUYFOW2Vw%40mail.gmail.com.
