[Vegan-commits] r2404 - pkg/vegan/man

[noreply at r-forge.r-project.org]

Author: jarioksa
Date: 2013-02-04 14:18:49 +0100 (Mon, 04 Feb 2013)
New Revision: 2404

Modified:
   pkg/vegan/man/cca.Rd
Log:
refer Legendre & Legendre presentation of the RDA algorithm in vegan

Modified: pkg/vegan/man/cca.Rd
===================================================================
--- pkg/vegan/man/cca.Rd	2013-02-03 15:50:31 UTC (rev 2403)
+++ pkg/vegan/man/cca.Rd	2013-02-04 13:18:49 UTC (rev 2404)
@@ -65,7 +65,10 @@
   regression on constraining variables, and the fitted values are
   submitted to correspondence analysis performed via singular value
   decomposition (\code{\link{svd}}). Function \code{rda} is similar, but uses
-  ordinary, unweighted linear regression and unweighted SVD.
+  ordinary, unweighted linear regression and unweighted SVD. Legendre &
+  Legendre (2012), Table 11.5 (p. 650) give a skeleton of the RDA
+  algorithm of \pgk{vegan}. The algorithm of CCA is similar, but
+  involves standardization by row and column weights.
 
   The functions can be called either with matrix-like entries for community
   data and constraints, or with formula interface.  In general, the