vegan
, there is also a package ca
with function ca
calculating correspondence analysis, with plot
, plot3d
and summary
functions. Package ade4
offers function dudi.coa
.Section: Ordination analysis
cca
(library vegan
) - if the environmental matrix is not specified, cca
function in vegan
package calculates unconstrained correspondence analysis1).decorana
(library vegan
) - this function implements the original DECORANA program, written by Mark Hill in Fortran, into R. For historical reasons2), only four DCA ordination axes are returned, and this is not easy to change.CA
(P. Legendre, Numerical Ecology with R, called CA.newr
in the 2nd edition) - code can be found here.vegan
, there is also a package ca
with function ca
calculating correspondence analysis, with plot
, plot3d
and summary
functions. Package ade4
offers function dudi.coa
.decorana
is implementing the original Hill's algorithm for DCA introduced by Fortran program DECORANA, which itself can calculate only four ordination axes; CANOCO behaves in the same way.