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mefa4: multivariate data handling with S4 classes and sparse matrices

CRAN version CRAN RStudio mirror downloads check

An S4 update of the mefa package using sparse matrices for enhanced efficiency. Sparse array-like objects are supported via lists of sparse matrices.

  • Main functions: Xtab, Mefa.
  • Accessor and replacement functions: xtab, samp, taxa.
  • Methods: mbind, groupSums, groupMeans.

See tutorial with design decisions and performance comparisons (Rmd, PDF)

Versions

Install CRAN version as:

Install development version from GitHub:

library(devtools)
install_github("psolymos/mefa4")

User visible changes are listed in the NEWS file.

Previously hosted at R-Forge (until rev 619).

Report a problem

Use the issue tracker to report a problem.

License

GPL-2

References

Solymos P. 2008. mefa: an R package for handling and reporting count data. Community Ecology 9, 125-127. (PDF)

Solymos P. 2009. Processing ecological data in R with the mefa package. Journal of Statistical Software 29(8), 1-28. DOI: 10.18637/jss.v029.i08