LeBauer:Software/Statistics: Difference between revisions

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==R==
===public R packages===
*[http://had.co.nz/ggplot2/ '''ggplot2'''] simplifies graphical data visualization and presentation
*'''coda''' tools for analysis of mcmc chains
*'''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].
* '''adimpro''' for image analysis
<pre>
##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]
</pre>
===Custom R packages===
See the [http://cran.r-project.org/doc/manuals/R-exts.html Writing R Extensions] guides for more information.

Latest revision as of 09:53, 10 November 2010


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