RcmdrMisc: plotMeans – R documentation

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plotMeans

Plot Means for One or Two-Way Layout

Description

Plots cell means for a numeric variable in each category of a factor or in each combination of categories of two factors, optionally along with error bars based on cell standard errors or standard deviations.

Usage

plotMeans(response, factor1, factor2, 
    error.bars = c("se", "sd", "conf.int", "none"),
    level=0.95, xlab=deparse(substitute(factor1)), 
    ylab=paste("mean of", deparse(substitute(response))),
    legend.lab=deparse(substitute(factor2)), 
    legend.pos=c("farright", "bottomright", "bottom", "bottomleft", 
                 "left", "topleft", "top", "topright", "right", "center"),
    main="Plot of Means",
    pch=1:n.levs.2, lty=1:n.levs.2, col=palette(), connect=TRUE, ...)

Arguments

`response`	Numeric variable for which means are to be computed.
`factor1`	Factor defining horizontal axis of the plot.
`factor2`	If present, factor defining profiles of means
`error.bars`	If `"se"`, the default, error bars around means give plus or minus one standard error of the mean; if `"sd"`, error bars give plus or minus one standard deviation; if `"conf.int"`, error bars give a confidence interval around each mean; if `"none"`, error bars are suppressed.
`level`	level of confidence for confidence intervals; default is .95
`xlab`	Label for horizontal axis.
`ylab`	Label for vertical axis.
`legend.lab`	Label for legend.
`legend.pos`	Position of legend; if `"farright"` (the default), extra space is left at the right of the plot.
`main`	Label for the graph.
`pch`	Plotting characters for profiles of means.
`lty`	Line types for profiles of means.
`col`	Colours for profiles of means
`connect`	connect profiles of means, default `TRUE`.
`...`	arguments to be passed to `plot`.

Value

The function invisibly returns NULL.

Author(s)

John Fox jfox@mcmaster.ca

Examples

if (require(car)){
    data(Moore)
    with(Moore, plotMeans(conformity, fcategory, partner.status, ylim=c(0, 25)))
}

RcmdrMisc

R Commander Miscellaneous Functions

v2.7-1

GPL (>= 2)

Authors

John Fox [aut, cre], Robert Muenchen [ctb], Dan Putler [ctb]

Initial release

2020-08-12