Author: Pierre Legendre

Source: website of Pierre Legendre (http://adn.biol.umontreal.ca/~numericalecology/Rcode/)

Originally part of the library (PCNM), which is no longer supported. Needs to install both PCNM function and also supporting pcoa.all function. Check how to install instructions, and also the documentation for PCNM and pcoa.all.

Direct import of Legendre's code:

source ('https://raw.githubusercontent.com/zdealveindy/anadat-r/master/scripts/PCNM.R')
source ('https://raw.githubusercontent.com/zdealveindy/anadat-r/master/scripts/pcoa.all.R')