R in a Nutshell, 2nd Edition

MASS

This is the main package of Venables and Ripley’s MASS.

Functions

Function	Description
Null	Given a matrix M, finds a matrix N giving a basis for the null space. That is, t(N) \%*\% M is the 0, and N has the maximum number of linearly independent columns.
Shepard	One form of nonmetric multidimensional scaling.
addterm	Tries fitting all models that differ from the current model by adding a single term from those supplied, maintaining marginality.
area	Integrates a function of one variable over a finite range using a recursive adaptive method. This function is mainly for demonstration purposes.
as.fractions	Finds rational approximations to the components of a real numeric object using a standard continued fraction method.
bandwidth.nrd	A well-supported rule of thumb for choosing the bandwidth of a Gaussian kernel density estimator.
bcv	Uses biased cross-validation to select the bandwidth of a Gaussian kernel density estimator.
boxcox	Computes and optionally plots profile log-likelihoods for the parameter of the Box-Cox power transformation.
con2tr	Converts lists to data frames for use by lattice.
contr.sdif	A coding for unordered factors based on successive differences.
corresp	Finds the principal canonical correlation and corresponding row and column scores from a correspondence analysis of a two-way contingency table.
cov.mcd, cov.mve, cov.rob	Compute a multivariate location and scale estimate with a high breakdown point. This can be thought of as estimating the mean and covariance of the good part of ...