smatr 3- an R package for estimation and inference about allometric lines

Abstract

1.The Standardised Major Axis Tests and Routines (SMATR) software provides tools for estimation and inference about allometric lines, currently widely used in ecology and evolution. 2.This paper describes some significant improvements to the functionality of the package, now available on R in smatr version 3. 3.New inclusions in the package include sma and ma functions that accept formula input and perform the key inference tasks; multiple comparisons; graphical methods for visualising data and checking (S)MA assumptions; robust (S)MA estimation and inference tools. © 2011 The Authors. Methods in Ecology and Evolution © 2011 British Ecological Society.