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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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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)
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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.