LeBauer:Software/Statistics: Difference between revisions
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===Custom R packages=== | ===Custom R packages=== | ||
See the [http://cran.r-project.org/doc/manuals/R-exts.html Writing R Extensions] guides for more information. | See the [http://cran.r-project.org/doc/manuals/R-exts.html Writing R Extensions] guides for more information. | ||
Revision as of 09:52, 10 November 2010
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R
public R packages
- ggplot2 simplifies graphical data visualization and presentation
- coda tools for analysis of mcmc chains
- randtoolbox has function for generating pseudo-random samples; the halton() function produces a pseudo-random over-dispersed matrix that I use to sampling from the distributions of ~20 parameters used in ensemble runs of the ED2 ecosystem model.
- adimpro for image analysis
##example R code for extracting jpg to N x M x 3 matrix
##much slower than Matlab imread()
a <- read.image('file.jpg')
b <- extract.image(a)
red <- b[,,1]
green <- b[,,2]
blue <- b[,,3]
Custom R packages
See the Writing R Extensions guides for more information.
