What documentation exists for R?

Chapter 5: R Add-On Packages 51
neural RBF and MLP neural networks with graphical user interface.
nice Get or set UNIX priority (niceness) of running R process.
nlme Fit and compare Gaussian linear and nonlinear mixed-effects models. Recommended.
nlmeODE Combine the nlme and odesolve packages for mixed-effects modelling using
differential equations.
nltm NonLinear Transformation Models for survival analysis.
nnet Software for single hidden layer perceptrons (“feed-forward neural networks”),
and for multinomial log-linear models. Contained in the ‘VR’ bundle. Recommended.
nor1mix One-dimensional normal mixture models classes, for, e.g., density estimation or
clustering algorithms research and teaching; providing the widely used Marron-
Wand densities.
norm Analysis of multivariate normal datasets with missing values.
normalp A collection of utilities for normal of order p distributions (General Error Distributions).
nortest Five omnibus tests for the composite hypothesis of normality.
noverlap Functions to perform the regression depth method (RDM) to binary regression
to approximate the amount of overlap, i.e., the minimal number of observations
that need to be removed such that the reduced data set has no longer overlap.
np Nonparametric kernel smoothing methods for mixed datatypes.
npmc Nonparametric Multiple Comparisons: provides simultaneous rank test procedures
for the one-way layout without presuming a certain distribution.
nsRFA Non-supervised Regional Frequency Analysis.
numDeriv Accurate numerical derivatives.
nws Functions for NetWorkSpaces and Sleigh.
odesolve An interface for the Ordinary Differential Equation (ODE) solver lsoda. ODEs
are expressed as R functions.
odfWeave Sweave processing of Open Document Format (ODF) files.
onion A collection of routines to manipulate and visualize quaternions and octonions.
optmatch Functions to perform optimal matching, particularly full matching.
orientlib Representations, conversions and display of orientation SO(3) data.
ouch Ornstein-Uhlenbeck models for phylogenetic comparative hypotheses.
outliers A collection of some tests commonly used for identifying outliers.
oz Functions for plotting Australia’s coastline and state boundaries.
pARtial (Partial) attributable risk estimates, corresponding variance estimates and confidence
intervals.