May I see the menu, please?
Everything is data
Data has to come from somewhere
plotmethods.r: methods for logical and character vectors
scale.data.frame.r: a scale()
method for data frames
mean.data.frame.r: a mean()
method for data frames
Dot-and-whisker plots: means and standard deviation, using substitute() dotandwhisker.r
Replace a value: Anonymous functions, and using lapply() writing a modified function: replacevalues.r
Using tapply(), extracting from lists "[[ ]]": Histograms by group with graphics
A graphics function to add a normal curve to a histogram: histnorm.r
Evidence and probability
Seeing is believing
There are three commonly used graphics packages in R: graphics, lattice, and ggplot2.
graphics, the default graphics package: graphics.r
Really? You want more?
Building packages
I’d start with Karl Broman’s Package Primer