doBy package - RDocumentation

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doBy

Groupwise Statistics, LSmeans, Linear Contrasts, Utilities

Facilities for working with grouped data: 'do' something to data stratified 'by' some variables.
LSmeans (least-squares means), general linear contrasts.
Miscellaneous utilities
Miscellaneous datasets

Author: Søren Højsgaard, Ulrich Halekoh

Online documentation

https://hojsgaard.github.io/doBy

Development site

https://github.com/hojsgaard/doBy

CRAN page:

https://cran.r-project.org/web/packages/doBy/index.html

Further info at:

http://people.math.aau.dk/~sorenh/software/doBy/

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Version

Install

install.packages('doBy')

Monthly Downloads

348,257

Version

4.6.27

License

GPL (>= 2)

Issues

Pull Requests

Stars

Forks

Repository

https://github.com/hojsgaard/doBy

Maintainer

Søren Højsgaard

Last Published

May 16th, 2025

Functions in doBy (4.6.27)

Function to make groupwise transformations

Sampling from a data frame

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

Split a data frame

Function to calculate groupwise summary statistics

Convert right hand sided formula to a list

Mathematics marks for students

Fish oil in pig food

Convert expression into function object.

Berkeley Growth Study data

Coronary artery disease data

Formula operations and coercion.

Cross-validation for list of glm objects

generate_data_list

Generate data list

Growth curves of pigs in a 3x3 factorial experiment

Internal functions for the doBy package

Yield from Danish agricultural production of grain and root crop.

Fast summary of microbenchmark object

Prostate Tumor Gene Expression Dataset

Section a function and set default values in function

model_stability_glm

Model stability for glm objects

Milk yield data for manually milked cows.

set_list_set_matrix

Matrix representatation of list of vectors and vice versa

recover_pca_data

Recover data from principal component analysis

Locate the index of the first/last unique value

Recode values of a vector

data_breastcancer

Gene expression signatures for p53 mutation status in 250 breast cancer samples

Forced expiratory volume in children

Contrasts for lm, glm, lme, and geeglm objects

Chemical composition of wine

data_personality

Personality traits

Plot linear model object

Get formulas from model_stability_glm_class object

Heat development in cement under hardening.

Auxillary functions for computing lsmeans, contrasts etc

Extract (pick) elements without using brackets

Determines if contrasts are estimable.

parseGroupFormula

Extract components from a formula with "conditioning bar"

Compute linear estimates

Linear estimates matrix

Where are the n largest or n smallest elements in a numeric vector ?

Weight and size of 20 potatoes

Get response variable from model

Tidy an esticon object

Scaling numerical values

Computing simple descriptive statistics of a numeric vector.

Find sub-sequences of identical elements in a vector.

Bind list of data frames and add list names as a column

interaction-plot

Two-way interaction plot

Taylor expansion (one dimension)

Rename columns in a matrix or a dataframe.

Compute LS-means (aka population means or marginal means)

Reciprocal function

Plot the response variable against the predictor variables.

Calculate "time since event" in a vector.

Height of math teachers

Tidy a linest object

split_byrow_bycol

Split matrix or dataframe into list

Truncate values in a matrix / vector to zero if they are below a certain threshold.

Add residuals of different types to dataframe

bquote_fun_list

Backquote a list of functions

Add predicted values of different types to dataframe

binomial_to_bernoulli_data

Convert binomial data to bernoulli data

Add interaction columns to data frame

Scale a dataframe or matrix

List of lm objects with a common model

Ordering (sorting) rows of a data frame

Formula based version of lapply and sapply

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

Lean meat contents of 344 pig carcasses