p3 {rube}R Documentation

Interactively show trace, ACF, and histogram for WinBUGS output.

Description

Given an R2WinBUGS bugs() object or a sims.array component of that, interactively show three key forms of the posterior (trace, ACF, and histogram), allowing interactively choosing the parameters. For vector and array parameters the first view is a set of posterior intervals, maximum lags above noise level, and Gelman RHat values. The set is a random sample if the number of elements is greater than nSample. From this overview, you can use previous/next to step through the detailed plots for each element.

Usage

p3(rubeResult, params = NULL,  only=NULL, drop=0, add=NULL,
   nSample=20, true=NULL, viewGroups=NULL,
   LCzero=TRUE, PIprob=0.95, rHatGrayZone=c(1.2,2.0), noMenu=FALSE)

Arguments

rubeResult

A bugs() object of the R2WinBUGS package or its sims.array component.

params

An optional string vector containing only the parameters of interest.

only

If "params" specifies a single multi-level parameter, then "only" specifies which component of that parameter to display.

drop

Number of initial iterations to drop

add

List of expressions or strings defining new parameters to create.

nSample

Sample size for condensed plot when parameter dim > nSample.

true

An optional numeric vector of true values (for simulated data) with NAs as place holders for those without known true values.

viewGroups

A list of string vectors of parameter names to be shown in groups. Any group can be a single string of the form "bb*cc" in which case all paramteters starting with "bb" and ending with "cc" will be in the group.

LCzero

Set to FALSE to suppress the zero line in the summary plots for LC groups.

PIprob

A value for the posterior credible interval or NULL for none.

rHatGrayZone

Gray zone for color flagging of Gelman's Rhat.

noMenu

Set to TRUE to make one plot without allocating space for a menu.

Details

This is interactive in terms of examining multiple parameters by clicking on the plot. The instructions are in the plot's menu when active; R commands can only be entered after clicking Quit to end the function.

Value

Returns null invisibly.

Author(s)

Howard J. Seltman <hseltman@stat.cmu.edu>

References

http://www.stat.cmu.edu/~hseltman/rube/

See Also

rube

Examples

cat("Need a good example!\n")

[Package rube version 0.3-11 Index]