Blog Archives

Geomorph update 2.1.4 Now Available!

April 4, 2015
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Geomorph users,We have uploaded version 2.1.4 of geomorph to CRAN. The windows and mac binaries have been compiled and the tarball is available*.Small Changes:warpRefMesh() generalised - now takes a mesh3d object (i.e. made from read.ply()) rather...

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Tips & Tricks 8: Examining Replicate Error

April 4, 2015
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Geomorph users,When starting out in a geometric morphometrics study, the common questions are ones of repeatability and measurement error.How much of the variation in the Procrustes residuals is due to human (digitizing) error? How much is du...

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Geomorph and Multivariate Datasets

March 25, 2015
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Did you know that geomorph is not just for landmark-based geometric morphometric (shape) data?We are committed to providing statistical tools for multivariate AND multidimensional morphometric data.As laid out in the recent series of papers on Phylogenetic Comparative Methods for high-dimensional data (Adams 2014a, Adams 2014b, Adams 2014c, Adams & Felice 2014), harnessing the R-mode – Q-mode equivalency as first shown...

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News So Far for Geomorph v2.1.4beta

March 23, 2015
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Dear geomorph users,we have so far recognised and fixed the following bugs known to be in geomorph v.2.1.3 on CRAN, and these are available in the GitHub repository of v.2.1.4beta:  BUG FIXES    Corrected error readland.tps() "Error...

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Tips & Tricks 7: Plotting PCA with TPS grids

March 19, 2015
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Tips & Tricks 7: Plotting PCA with TPS grids

Geomorph users,Our function plotTangentSpace() performs a Principal Components Analysis (PCA) of shape variation and plots two dimensions of tangent space for a set of Procrustes-aligned specimens and also returns the shape cha...

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Installing Geomorph and R by Source

March 16, 2015
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Since we started having a beta version of geomorph on GitHub, we understand that installation has become a little bit more complex. We were also aware of the issues for Mac Snow Leopard users.I have written a detailed summary of how to install geomorph...

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Tips & Tricks 6: Exploring Data for Outliers

February 17, 2015
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Geomorph users,A new function in geomorph 2.1.3 allows the user to explore Procrustes superimposed data for outliers (plotOutliers). Here I shall provide a few example for loops to demonstrate how you can explore your data for outliers prior to analyse...

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Geomorph update 2.1.3 Now Available!

February 17, 2015
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Geomorph update 2.1.3 Now Available!

Geomorph users,We have uploaded version 2.1.3 to CRAN. The windows and mac binaries have been compiled and the tarball is available.NOTE: Version 2.1.3 has a small bug in readland.tps()that unfortunately slipped through the cracks. So yo...

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Geomorph To Feature At SVP 2015

February 10, 2015
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Geomorph To Feature At SVP 2015

Calling Palaeontology-based Morphometricians,I am pleased to announce that myself, along with Aki Watanabe and Marc Jones will be leading a Symposium and associated workshop on Geometric Morphometrics in Paleontology at the Annual Meeting for the Society of Vertebrate Paleontology in Dallas Texas October 2015.Podium Symposium: The Shape of Things to Come: Geometric Morphometrics...

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Tips & Tricks 5: Extracting Classifiers Using Substring

November 20, 2014
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Today's exercise in another easy one, and is inspired by a question from Ariel Marcy of University of Queensland.Exercise 5 - How to extract classifiers from names of specimens.Well-organised morphometricians will have a consistent naming system for th...

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