Results for keyword R :
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Data Cloning I: univariate
by eric.ward, last updated 5/26/08, sharing set to Public
This script writes and runs the data cloning procedure described by Lele et al. (2007, Ecology Letters). The routine is in R, and requires the user to install OpenBUGS before running. The number of clones can (and should) be modified. For this simple example, 100 clones takes ~ 2 minutes on my 2.5 year old laptop (1.66Ghz, 1GB RAM). More details and diagnostics can be found in the multivariate cloning project. -
MARSS Dev Site
by e2holmes, last updated 7/30/10, sharing set to Public
This is the DEVELOPMENT site for the MARSS R package where we are working on version 2.0 and fixing bugs in 1.0. For the current MARSS release and manual, go to the MARSS 1.0 project page. To download go to CRAN or download straight from the R GUI using "Install Packages" menu.
MARSS fits mulitvariate autoregressive state-space (MARSS) models with Gaussian errors to multivariate time series data. A MARSS model is:
x(t) = B x(t-1) + u + v(t), v(t)~MVN(0,Q)
y(t) = Z x(t) + a + w(t), w(t)~MVN(0,R)
Project news (June 2010): MARSS 1.0 is up on CRAN and that's where you should download the package files (Here is the link). The Fishbox site is where we are working on 2.0 and any bug fixes for 1.0.
Release projections
- MARSS 1.0 Jun 22, 2010 uploaded to CRAN. Provides MARSS with no B or Z estimation
- MARSS 2.0 Provides Bayesian MARSS (method=Bayes) for 1.0 model cases (i.e. no B or Z estimation)
- MARSS 3.0 ?; Jan 2011. Provides MARSS with B and Z estimation
Developers: Eli Holmes, Eric Ward and Kellie Wills