T1mice: T1 mouse vertabrae data

In iandryden/shapes: Statistical Shape Analysis

T1 mouse vertabrae data

Description

T1 mouse vertebrae data - 4 landmarks in 2 dimensions, in 3 groups (30 Control, 26 Large, 29 Small mice). The 4 landmarks are obtained using a semi-automatic method at points of high curvature. This particular strain of mice is the ‘QE’ strain.

Usage

data(T1mice)

Format

mice$x : An array of dimension 4 x 2 x 85 of the two dimensional co-ordinates of 4 landmarks for each of the 85 mice.

mice$group : Group labels. "c" Control, "l" Large, "s" Small mice

Source

Dryden, I.L. and Mardia, K.V. (1996). Statistical Shape Analysis with Applications in R, 2nd Edition, Wiley, Chichester.

References

Mardia, K. V. and Dryden, I. L. (1989). The statistical analysis of shape data. Biometrika, 76, 271-281.

Data from Paul O'Higgins (Hull-York Medical School) and David Johnson (Leeds)

Examples

data(T1mice)
plotshapes(T1mice$x,symbol=as.character(T1mice$group),joinline=c(1,4,2,3,1))

iandryden/shapes documentation built on April 17, 2025, 1:57 p.m.