LeBauer:Software/Statistics: Difference between revisions
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*'''coda''' tools for analysis of mcmc chains | *'''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]. | *'''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> | <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> | </pre> | ||
==JAGS== | ==JAGS== | ||
=====Installing Jags packages (rjags and R2jags) in R===== | =====Installing Jags packages (rjags and R2jags) in R===== | ||
Revision as of 18:21, 28 July 2010
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R
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]
JAGS
Installing Jags packages (rjags and R2jags) in R
wget http://cran.r-project.org/src/contrib/R2jags_0.01-26.tar.gz sudo R CMD INSTALL R2jags_0.01-26.tar.gz wget http://cran.r-project.org/src/contrib/rjags_1.0.3-11.tar.gz sudo R CMD INSTALL rjags_1.0.3-11.tar.gz
