LeBauer:Software/Statistics

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Current revision (12:53, 10 November 2010) (view source)
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==R==
 
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===public R packages===
 
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*[http://had.co.nz/ggplot2/ '''ggplot2'''] simplifies graphical data visualization and presentation
 
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*'''coda''' tools for analysis of mcmc chains
 
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*'''randtoolbox''' has function for generating pseudo-random samples; the [http://en.wikipedia.org/wiki/Halton_sequence 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 [http://128.174.125.122/wiki/index.php/ED2_Documentation ED2 ecosystem model].
 
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* '''adimpro''' for image analysis
 
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<pre>
 
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##example R code for extracting jpg to N x M x 3 matrix
 
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##much slower than Matlab imread()
 
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a <- read.image('file.jpg')
 
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b <- extract.image(a)
 
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red  <- b[,,1]
 
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green <- b[,,2]
 
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blue  <- b[,,3]
 
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</pre>
 
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===Custom R packages===
 
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See the [http://cran.r-project.org/doc/manuals/R-exts.html Writing R Extensions] guides for more information.
 

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