This is a plot of dependent variable (DV) vs individual predictions (IPRED) conditioned by covariates, a specific function in Xpose 4. It is a wrapper encapsulating arguments to the xpose.plot.default function. Most of the options take their default values from xpose.data object but may be overridden by supplying them as arguments.

dv.vs.ipred.by.cov(
  object,
  covs = "Default",
  abline = c(0, 1),
  smooth = TRUE,
  main = "Default",
  ...
)

Arguments

object

An xpose.data object.

covs

A vector of covariates to use in the plot. If "Default" the the covariates defined in object@Prefs@Xvardef$Covariates are used.

abline

Vector of arguments to the panel.abline function. No abline is drawn if NULL.

smooth

Logical value indicating whether an x-y smooth should be superimposed. The default is TRUE.

main

The title of the plot. If "Default" then a default title is plotted. Otherwise the value should be a string like "my title" or NULL for no plot title.

...

Other arguments passed to link{xpose.plot.default}.

Value

Returns a stack of xyplots of DV vs IPRED, conditioned on covariates.

Details

Each of the covariates in the Xpose data object, as specified in object@Prefs@Xvardef$Covariates, is evaluated in turn, creating a stack of plots.

A wide array of extra options controlling xyplot are available. See xpose.plot.default and xpose.panel.default for details.

Author

E. Niclas Jonsson, Mats Karlsson, Andrew Hooker & Justin Wilkins

Examples

dv.vs.ipred.by.cov(simpraz.xpdb, covs=c("HCTZ","WT"), max.plots.per.page=2)