![]() ![]() The names for the 2nd grouping variable, if there is one Sd=TRUE will plot Standard Deviations instead of standard errorsįor a bar plot legend, these are the variable labels, for a line plot, Default is 1- alpha =95% confidence interval If specified, the x limits for the plot, otherwise based upon the dataĪlpha level of confidence interval. If specified, the y limits for the plot, otherwise based upon the data Is the grouping variable categorical (TRUE) or continuous (FALSE If using formula input, the data file must be specifiedĪ different line for each group (default) or each variable Usage (x,group,data=NULL, by.var=FALSE,x.cat=TRUE,ylab =NULL,xlab=NULL, main=NULL,Įyes=TRUE, alpha=.05,sd=FALSE,labels=NULL,v.labels=NULL,v2.labels=NULL,Īdd.labels=NULL,pos=NULL, arrow.len=.05, min.size=1,add=FALSE,Ĭolors=c("black","blue","red"), lty,lines=TRUE, Means and standard errors for each group are calculated using describeBy. Can also be combined with such functions as boxplot to summarize distributions. Meant mainly for demonstration purposes for showing the probabilty of replication from multiple samples. One of the many functions in R to plot means and confidence intervals. Plot means and confidence intervals for multiple groups Description
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