The package "nparLD" is designed to perform nonparametric analysis of
longitudinal data in factorial experiments. Longitudinal data are those
which are collected from the same subjects over time, and they frequently
arise in biological sciences. Nonparametric methods do not require
assumptions on distributions of parameters, and are applicable to a
variety of data types (continuous, discrete, purely ordinal, and
dichotomous). Such methods are also robust with respect to outliers and
for small sample
sizes.