### Re: [MORPHMET] relative positions of landmark partitions in integration tests - how important?

Now if only archaeological and museum skeletal samples would stop disarticulating and stay in anatomical position. On Wed, Jan 24, 2018 at 11:29 AM, David Katz <dck...@ucdavis.edu> wrote: > No argument here. > > On Wed, Jan 24, 2018 at 11:12 AM, Adams, Dean [EEOBS] <dcad...@ias

### Re: [MORPHMET] relative positions of landmark partitions in integration tests - how important?

Department of Ecology, Evolution, and Organismal Biology > >Department of Statistics > > Iowa State University > > www.public.iastate.edu/~dcadams/ > > phone: 515-294-3834 <(515)%20294-3834> > > > > *From:* katz.w...@gmail.com [mailto:katz.w.

### Re: [MORPHMET] relative positions of landmark partitions in integration tests - how important?

I read Christy's question a little differently, and requiring some clarification. First, Dean, doesn't Dean & Felice fix the angle between jaw and cranium so that you can subject a craniomandibular dataset to a common GPA, which at the PLS step has the benefit of preserving relative size

### Re: [MORPHMET] pairwise matrix of vector angles in R

trix(M) > type <- match.arg(type) > if(type == "r") { > vc <- vec.cor.matrix(M) # as above > } else { > vc <- vec.cor.matrix(M) > vc <- acos(vc) # finds angles for vector correlations > diag(vc) = 0 # Make sure computational 0s are true 0s > }

### Re: [MORPHMET] pairwise matrix of vector angles in R

I think this does it (but please check; I quickly stuck together two different pieces of code)... # matrix where each vector is a row vec.mat <- ... #Compute group*loci matrix of mean microsatellite lengths angle.mat <- matrix(NA,nrow=nrow(vec.mat),ncol=nrow(vec.mat)) # angle function (radians

### Re: [MORPHMET] eliminating the effect of population differences

and form. http://www.pnas.org/content/early/2017/07/18/1702586114.full I hope you find it interesting. David On Fri, Jan 20, 2017 at 8:50 AM, David Katz <dck...@ucdavis.edu> wrote: > Elahe and Ari, > > If your dependent observations have more than a few dimensions, such

### Re: [MORPHMET] eliminating the effect of population differences

Elahe and Ari, If your dependent observations have more than a few dimensions, such as is typical with landmark data or even a collections of linear measurements, then I think the common covariance matrix recommendation from Dr. Rohlf is the more standard approach. A typical strategy for removing

### Re: [MORPHMET] Small object (insectivorous bat) photogrammetry

Hi Giada, The object may simply be too small. However... 1. My recollection is that you need to keep your f-stop much lower, maybe f-11 maximum. Look into it. It's possible this has changed with recent software updates. 2. I assume each chunk is a rotation around the skull. Try shooting more

### Re: [MORPHMET] Read .landmarkAscii file into R

ims[i]=dim(read.amira.set(paste(path.dir,"/",names[i],sep=""),"auto"))[1]} > > array.amira=array(NA,dim=c(as.numeric(names(sort(-table(dims)))[1]),3,length(names)))} > else{array.amira=array(NA,dim=c(nland,3,length(names)))} > for(i in 1:length(names)){ > array.amira[,,i]=read.amira.set(paste(path

### [MORPHMET] Read .landmarkAscii file into R

,0,1 (or maybe 1,0,0). This is really strange behavior. A read function shouldn't write. My issue may be better suited to an R forum, but I am hoping someone here has reliable code for reading Avizo landmarks into R. Thanks in advance. David -- David Katz University of California, Davi

### Re: [MORPHMET] Read .landmarkAscii file into R

.-. .-. /_") > \\_//^\\_//^\\_// > `"` `"` `"`* > > learn more about them here: www.emmasherratt.com/caecilians > > > On 20 January 2016 at 14:50:38, David Katz (dck...@ucdavis.edu) wrote: > > Hi everyone, > > I've collected

### Re: [MORPHMET] Error with read.ply in geomorph

(which is basically the same) to import all kinds of meshes (stl, obj, ply) binary and ascii into an object of class mesh3d Best Stefan On 15/12/14 01:52, David Katz wrote: Hello, When I try to read a 3D surface file (ply ascii format) into geomorph, I get the following error: Error

### [MORPHMET] Error with read.ply in geomorph

have an idea where this problem is coming from and how to fix it? Note that the model opens without difficulty as a binary ply in Geomagic. Thanks. David Katz -- David Katz Doctoral Candidate Department of Anthropology--Evolutionary Wing University of California, Davis Young Hall 204

### Re: [MORPHMET] Recommendations for sticky substances

...@morphometrics.org. -- David Katz Doctoral Candidate Department of Anthropology--Evolutionary Wing University of California, Davis Young Hall 204 -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org To unsubscribe from this group and stop receiving emails from it, send