Open the coordinate file in Past, then peform elliptic fourier analyses,
then copy the ouput file with the harmonics (you can select the desired
numer of harmonics if you want). Then open a new past window and paste the
harmonics. With the desired number of harmonics you can perform now the pca
Hi,
I am trying to perform an Elliptic Fourier analysis using PAST 3.05 and the
Trilobite outlines file (outlines.dat in folk.uio.no/ohammer/past/book.html).
Unfortunately, I cannot generate using this example the PCA plot shown in Fig.
4.24 of the Paleontological Data Analysis book (Page 111
Hi Everyone,
I am exploring the use of GMM to study the ontogenetic changes of claw
morphology in one species of crabs. The tips of the crab claws changes in
curvature (shape) as they grow and there are distinct differences if I
compare the claws of the juvenile crabs and the adults. However, the
Hi Karl,
Try import_jpg in Momocs on segmented images ie black shape on a white
background.
Be sure to get the last version (https://github.com/vbonhomme/Momocs/ ) ,
the one on CRAN and published in JSS is completeley obsolete now
New vignettes are being rewritten, so feel free to contact me for
Dear Marc
You could use photogrammetry to create 3D models, but it would require
several photographs from different angles rather than just one from the
top.
I hope that helps.
Best wishes,
Anneke van Heteren
Darwinweg 2 - 2333 CR LeidenMeckenheimer
Allee 176
Hi Karl,
I would highly recommend Momocs. You can read in the images into R with the
import_jpeg function. The author has a lot of documentation on his website
and on github.
Ricardo
On Mon, Feb 16, 2015 at 2:04 PM, Garvin, Heather hgar...@mercyhurst.edu
wrote:
Hi Karl,
I’ve used the
Hi Adeline,
I'm not sure if this helps with your problems, but what you are
describing reminds me of two things:
- MANCOVA using shape variables as dependent, species as categorical
predictor and size (either of the claw or of the body) as covariate
and testing not only for the main
