plotSplom {scapeMCMC}R Documentation

Plot MCMC Scatterplot Matrix

Description

Plot scatterplots of multiple Markov-chain Monte Carlo chains. This is a diagnostic plot for deciding whether parameters are confounded. When parameter estimates are highly dependent on each other, it may undermine conclusions based on MCMC results of that model.

Usage

plotSplom(mcmc, axes=FALSE, between=0, div=1, log=FALSE, base=10, ...)

Arguments

mcmc MCMC chains as a data frame or mcmc object.
axes whether axis values should be plotted.
between space between panels.
div denominator to shorten values on the y axis.
log whether values should be log-transformed.
base logarithm base.
... passed to pairs().

Value

Null, but a plot is drawn on the current graphics device.

Note

The Args function from the gdata package is recommended for reviewing the arguments, instead of args.

Author(s)

Arni Magnusson arnima@u.washington.edu.

See Also

pairs, splom.

scapeMCMC-package gives an overview of the package.

Examples

plotSplom(xmcmc$P)
plotSplom(xproj$B$"0.25", axes=TRUE, between=1, div=1000,
          main="Future biomass", cex.labels=1.5)

[Package scapeMCMC version 1.0-3 Index]