add.trajectories: Plot Function for RRPP

Description

Function adds trajectories to a principal component plot

Usage

add.trajectories(
  TP,
  traj.pch = 21,
  traj.col = 1,
  traj.lty = 1,
  traj.lwd = 1,
  traj.cex = 1.5,
  traj.bg = 1,
  start.bg = 3,
  end.bg = 2
)

Arguments

TP: plot object (from plot.trajectory.analysis)
traj.pch: Plotting "character" for trajectory points. Can be a single value or vector of length equal to the number of trajectories. See par and its description for pch.
traj.col: The color of trajectory lines. Can be a single value or vector of length equal to the number of trajectories. See par and its description for col.
traj.lty: Trajectory line type. Can be a single value or vector of length equal to the number of trajectories. See par and its description for lty.
traj.lwd: Trajectory line width. Can be a single value or vector of length equal to the number of trajectories. See par and its description for lwd.
traj.cex: Trajectory point character expansion. Can be a single value or vector of length equal to the number of trajectories. See par and its description for cex.
traj.bg: Trajectory point background. Can be a single value or vector of length equal to the number of trajectories. See par and its description for bg.
start.bg: Trajectory point background, just the start points. Can be a single value or vector of length equal to the number of trajectories. See par and its description for bg. Green start points are the default.
end.bg: Trajectory point background, just the end points. Can be a single value or vector of length equal to the number of trajectories. See par and its description for bg. Red end points are the default.

Author

Michael Collyer

Details

The function adds trajectories to a plot made by plot.trajectory.analysis. This function has a restricted set of plot parameters based on the number of trajectories to be added to the plot.

References

Adams, D. C., and M. M. Cerney. 2007. Quantifying biomechanical motion using Procrustes motion analysis. J. Biomech. 40:437-444.

Adams, D. C., and M. L. Collyer. 2007. The analysis of character divergence along environmental gradients and other covariates. Evolution 61:510-515.

Adams, D. C., and M. L. Collyer. 2009. A general framework for the analysis of phenotypic trajectories in evolutionary studies. Evolution 63:1143-1154.

Collyer, M. L., and D. C. Adams. 2007. Analysis of two-state multivariate phenotypic change in ecological studies. Ecology 88:683-692.

Collyer, M. L., and D. C. Adams. 2013. Phenotypic trajectory analysis: comparison of shape change patterns in evolution and ecology. Hystrix 24: 75-83.