geomorph (version 3.0.2)

read.morphologika: Read landmark data from Morphologika file

Description

Read Morphologika file (*.txt) to obtain landmark coordinates and specimen information

Usage

read.morphologika(file)

Arguments

file

A Morphologika *.txt file containing two- or three-dimensional landmark data.

Value

Function returns a (p x k x n) array of the coordinate data. If other optional headers are present in the file (e.g. "[labels]" or "[wireframe]") function returns a list containing the "coords" array, and data matrix of "labels" and or "wireframe".

Details

This function reads a *.txt file in the Morphologika format containing two- or three-dimensional landmark coordinates. Morphologika files are text files in one of the standard formats for geometric morphometrics (see O'Higgins and Jones 1998,2006).

If the headers "[labels]", "[labelvalues]" and "[groups]" are present, then a data matrix containing all individual specimen information is returned. If the header "[wireframe]" is present, then a matrix of the landmark addresses for the wireframe is returned (see plotRefToTarget option 'links')

References

O'Higgins P and Jones N (1998) Facial growth in Cercocebus torquatus: An application of three dimensional geometric morphometric techniques to the study of morphological variation. Journal of Anatomy. 193: 251-272

O'Higgins P and Jones N (2006) Tools for statistical shape analysis. Hull York Medical School.