SparseM (version 0.80)

triogramX: A Design Matrix for a Triogram Problem

Description

This is a design matrix arising from a bivariate smoothing problem using penalized triogram fitting. It is used in the SparseM vignette to illustrate the use of the sparse matrix image function.

Usage

data(triogramX)

format

A 375 by 100 matrix stored in compressed sparse row format

References

Koenker, R and Ng, P. (2002). SparseM: A Sparse Matrix Package for R, http://www.econ.uiuc.edu/~roger/research