plotMeans {Rcmdr} | R Documentation |
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.
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)), main = "Plot of Means", pch = 1:n.levs.2, lty = 1:n.levs.2, col = palette())
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. |
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 |
The function invisibly returns NULL
.
John Fox jfox@mcmaster.ca