Groupwise computatations


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Documentation for package `doBy' version 0.1

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budworm Effect of Insecticide on survivial of tobacco budworms
dietox Growth curves of pigs in a 3x3 factorial experiment
doBy Various utilities which includes functions for creating groupwise calculations etc.
doby.xtabs Function to do groupwise calculations
dose.LD50 Calculate LD50
esticon Contrasts for lm, glm, lme, and geeglm objects
orderBy Ordering (sorting) rows of a data frame
recodevar recode levels of variable
sampleBy Sampling from a data frame
splitBy Split a data frame
subsetBy Finds subsets of a dataframe which is split by variables in a formula.
summaryBy Function to calculate groupwise summary statistics