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doBy (version 3.9)

Groupwise computations of summary statistics and other utilities

Description

Facilities for groupwise computations of summary statistics and other facilities for working with grouped data.

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Version

Install

install.packages('doBy')

Monthly Downloads

360,908

Version

3.9

License

GPL (>= 2)

Maintainer

S�ren H�jsgaard

Last Published

May 13th, 2009

Functions in doBy (3.9)

recodevar

recode levels of variable
dose.LD50

Calculate LD50
splitBy

Split a data frame
sampleBy

Sampling from a data frame
internal

Internal functions for the doBy package
dietox

Growth curves of pigs in a 3x3 factorial experiment
transformBy

Function to make groupwise transformations
summaryBy

Function to calculate groupwise summary statistics
firstlastobs

Locate the index of the first/last unique value
lapplyBy

Formula based version of lapply
codstom

Diet of Atlantic cod in the Gulf of St. Lawrence (Canada)
budworm

Effect of Insecticide on survivial of tobacco budworms
orderBy

Ordering (sorting) rows of a data frame
subsetBy

Finds subsets of a dataframe which is split by variables in a formula.
esticon

Contrasts for lm, glm, lme, and geeglm objects
doBy

Various utilities which includes functions for creating groupwise calculations etc.