geomorph (version 3.0.3)

geomorph.data.frame: Create a data frame with shape data

Description

A list similar to a data frame to facilitate analysis of shape data.

Usage

geomorph.data.frame(...)

Arguments

...

a list of objects to include in the data frame.

Details

This function produces a list that can be used like a data frame in other analytical functions. The purpose is similar to the function, data.frame, but without the constraint that data must conform to an n (observations) x p (variables) matrix. Rather, the list produced is constrained only by n. List objects can be Procrustes residuals (coordinates) arrays, matrices, variables, distance matrices, and phylogenetic trees. Results from gpagen can be directly imported into a geomorph.data.frame to utilize the coordinates and centroid size as variables. (See Examples)

Examples

data(plethodon) 
Y.gpa <- gpagen(plethodon$land,PrinAxes=FALSE)
gdf <- geomorph.data.frame(Y.gpa)
attributes(gdf)

gdf <- geomorph.data.frame(Y.gpa, species = plethodon$species, site = plethodon$site)
attributes(gdf)

# Using geomorph.data.frame to facilitate analysis
procD.lm(coords ~ Csize + species * site, data = gdf)