HH: anova.ancova – R documentation

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anova.ancova

ANOVA table for a c("ancovaplot","trellis") object.

Description

ANOVA table for a c("ancovaplot","trellis") object.

Usage

## S3 method for class 'ancovaplot'
anova(object, ...)
aov.ancovaplot(object, warn=TRUE)
aovStatement(object, ...)
## S3 method for class 'ancovaplot'
aovStatement(object, ...)
aovStatementAndAnova(object, ...)
## S3 method for class 'ancovaplot'
aovStatementAndAnova(object, ...)
## S3 method for class 'ancovaplot'
model.tables(x, ...)

Arguments

`object, x`	`c("ancovaplot","trellis")` object.
`warn, ...`	`warn` is logical with default `TRUE`. See the Details section for the interpretation of `warn`. When `...` is received by `aov.ancovaplot`, it is evaluated if it is `warn` and ignored for all other values. When `...` is received by `model.tables` it is interpreted normally.

Details

The aov.ancovaplot modifies the call item into an aov call with the same formula and data. If there are groups in the call specified as a name, the groups factor is included in the constructed aov call only if there are both a factor and a covariate in the right-hand-side of the formula. In that case they the groups will be interpreted as a block factor and will be placed first. If the groups are specified as a vector of values in the call, the groups are ignored with a warning. If there is only one term in the right-hand-side, then the groups factor will not be placed into the aov formula. In this case, there will be a warning if the argument warn is TRUE, and no warning if the warn argument is FALSE.

Author(s)

Richard M. Heiberger <rmh@temple.edu>