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doBy (version 2.2)

Groupwise computations of summary statistics and other utilities

Description

Facilities for groupwise computations of summary statistics and other facilities for working with grouped data (similar to what can be achieved by proc means or proc summary of the SAS system).

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Version

Install

install.packages('doBy')

Monthly Downloads

348,257

Version

2.2

License

GPL (>= 2)

Maintainer

S�ren H�jsgaard

Last Published

April 9th, 2025

Functions in doBy (2.2)

esticon

Contrasts for lm, glm, lme, and geeglm objects

budworm

Effect of Insecticide on survivial of tobacco budworms

dietox

Growth curves of pigs in a 3x3 factorial experiment

transformBy

Function to make groupwise transformations

recodevar

recode levels of variable

orderBy

Ordering (sorting) rows of a data frame

dose.LD50

Calculate LD50

firstlastobs

Locate the index of the first/last unique value

doBy

Various utilities which includes functions for creating groupwise calculations etc.

lapplyBy

Formula based version of lapply

sampleBy

Sampling from a data frame

codstom

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

splitBy

Split a data frame

summaryBy

Function to calculate groupwise summary statistics

internal

Internal functions for the doBy package

subsetBy

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