ecodist R package

Dissimilarity-based analysis functions including ordination and Mantel test functions, intended for use with spatial and community data.

CHANGES in ecodist 2.0

• fixed bug in crosstab() that affected expansion of single-row or -column tables using allrows or allcols; changed result to data frame
• added icov argument to distance() for use with Mahalanobis distance
• changed stress calculation in nmds() to match vegan and MASS calculations; formerly was a similar method that was monotonically related, but not identical.
• added plot.nmds to display stress and r2 for NMDS ordinations across a range of dimensions
• added addord method to add new data to an existing NMDS ordination.
• added clusterlevel to calculate Mantel tests for specified groupings
• added logistic regression to MRM
• added xdistance cross-distance function, and cross-dissimilarity analysis functions xmantel, xmgram
• updated examples in help files to be more helpful
• added a vignette listing dissimilarity-based analyses