[R-pkgs] New package ridittools

[Eric Bohlman]

A new package, ridittools, is available on CRAN

Description: Functions to compute ridit scores of vectors, compute mean
ridits and their standard errors for vectors compared to a reference 
vector,as described in Fleiss (1981, ISBN:0-471-06428-9), and compute
means/SEs for multiple groups in matrices. Data can be either
counts or proportions. Emphasis is on ridit analysis of ordered
categorical data such as Likert items and pain-rating scales.