https://github.com/psolymos/mefa4

R package for multivariate data handling with S4 classes and sparse matrices
https://github.com/psolymos/mefa4

cran data-manipulation ecology r sparse-matrices

Last synced: 3 months ago
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R package for multivariate data handling with S4 classes and sparse matrices

• Host: GitHub
• URL: https://github.com/psolymos/mefa4
• Owner: psolymos
• Created: 2014-10-20T23:04:39.000Z (about 10 years ago)
• Default Branch: master
• Last Pushed: 2024-09-24T01:04:30.000Z (3 months ago)
• Last Synced: 2024-10-09T15:40:08.478Z (3 months ago)
• Topics: cran, data-manipulation, ecology, r, sparse-matrices
• Language: R
• Homepage: https://peter.solymos.org/mefa4/
• Size: 7 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# mefa4: multivariate data handling with S4 classes and sparse matrices

[![CRAN version](https://www.r-pkg.org/badges/version/mefa4)](https://CRAN.R-project.org/package=mefa4)

[![CRAN RStudio mirror downloads](https://cranlogs.r-pkg.org/badges/grand-total/mefa4)](https://CRAN.R-project.org/package=mefa4)

[![check](https://github.com/psolymos/mefa4/actions/workflows/check.yml/badge.svg)](https://github.com/psolymos/mefa4/actions/workflows/check.yml)

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](https://github.com/psolymos/mefa4/blob/master/extras/mefa4.Rmd), [PDF](https://github.com/psolymos/mefa4/raw/master/extras/mefa4.pdf))

## Versions

Install CRAN version as:

```R

install.packages("mefa4")

```

Install development version from GitHub:

```R

library(devtools)

install_github("psolymos/mefa4")

```

User visible changes are listed in the [NEWS](https://github.com/psolymos/mefa4/blob/master/NEWS.md) file.

Previously hosted at [R-Forge](https://r-forge.r-project.org/projects/mefa/) (until rev 619).

## Report a problem

Use the [issue tracker](https://github.com/psolymos/mefa4/issues)

to report a problem.

## License

[GPL-2](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)

## References

Solymos P. 2008. mefa: an R package for handling and reporting count data.

_Community Ecology_ **9**, 125-127. ([PDF](https://drive.google.com/file/d/0B-q59n6LIwYPdWVkWlQ1ZzFMS3c/view?usp=sharing))

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](https://doi.org/10.18637/jss.v029.i08)