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A smacof update is available on R-forge. It includes jackknife and permutation tests for MDS.
smacof provides the following approaches of multidimensional scaling (MDS) based on stress minimization by means of majorization: Simple smacof on symmetric dissimilarity matrices, smacof for rectangular matrices (unfolding models), smacof with constraints on the configuration, three-way smacof for individual differences (including constraints for idioscal, indscal, and identity), and spherical smacof (primal and dual algorithm). Each of these approaches is implemented in a metric and nonmetric manner including primary, secondary, and tertiary approaches for tie handling. Package vignette is included.
New versions of homals and anacor are available on CRAN. Vignettes are included. A first smacof beta version for multidimensional scaling (MDS) is available on R-forge.
PsychoR is now provided as a multiple package project. So far it includes homals for Gifi-models and anacor for correspondence analysis. Both are already available on CRAN. In addition, a first beta version of smacof is checked in which will be completed soon.
Homals 0.9-3 is on R-forge and soon on CRAN: