An S4 update of the mefa package using sparse matrices for enhanced efficiency. Sparse array-like objects are supported via lists of sparse matrices.
Xtab
, Mefa
.xtab
, samp
, taxa
.mbind
, groupSums
, groupMeans
.See tutorial with design decisions and performance comparisons (Rmd, PDF)
Install CRAN version as:
install.packages("mefa4")
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).
Use the issue tracker to report a problem.
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
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