Changelog

Deprecated Functions

Moved genCorOrdCat’s functionality into genOrdCat. genCorOrdCat is now deprecated.
Renamed catProbs to genCatFormula for naming consistency. catProbs is now deprecated.

Introduced a new system for formula definitions and completely reworked the underlying code. See vignette “Dynamic Data Definition”.
The new function genMixFormula generates mixture formulas from different inputs.
Some simstudy functions now produce custom errors and warnings. Eventually all conditions will be replaced by the new system to make error handling easier for the user.
Added new vignettes.
Created documentation pages for:
- the release version https://kgoldfeld.github.io/simstudy/
- and development version https://kgoldfeld.github.io/simstudy/dev

genCatFormula now warns if an additional category is created or probabilities are normalized.
Fixed bug in trtAssign related new ratio argument.
Fixed bug in trtAssign when strata had count of one.
defData now also checks the first row in the definition table for validity.

Added “mixture” distribution that takes a value from an existing column with a specified probability.
Modified function trtAssign to improve speed performance of stratified sampling with very large numbers of strata.
Add argument “ratio” to function trtAssign to allow users to specify more than 1:1 randomization.

Added function trimData (that uses new rcpp function clipVec) to clip or truncate a longitudinal data set after a certain event has occurred.
Fixed bug in addMarkov, added trimvalue argument to use trimData function
Added trimvalue argument in genMarkov

Added functions genMarkov and addMarkov to create data.table with (or add to existing data.table) individual chains of Markov processes.
Added function genNthEvent to create data.table with binary event outcome in a longitudinal setting.
Updated function genCluster so that cluster size can be specified as an integer, and will be constant across all clusters.
Updated function addPeriods that period name can be specified.
Updated function trtStepWedge so that a transition period can be included.
Fixed bug in function delColumns related to multiple keys.

Added negative binomial distribution as an option to function iccRE
Fixed function genCorOrdCat so that it can accept user-specified correlation matrix
Added function trtStepWedge to generate treatment assignment for a stepped-wedge design cluster randomized trial.

Fixed genCorFlex and addMultiFac to accommodate bug fixes with package data.table

Added negative binomial option to genCorGen, addCorGen, genCorFlex, and addCorFlex
Fixed bug in function genFactor
Added LAG() functionality to missing data generation - updated functions genMiss and added two new internal functions .checkLags and .addLags
Function catProbs now accepts a vector of probabilities or weights as an argument
Fixed bugs in function addCondition

Added function genCorMat - generate an n x n correlation matrix
Added function genCorOrdCat - generate correlated ordinal categorical data
Added beta distribution option to function defData (and associated functions)
Added function betaGetShapes
Implemented Emrich and Piedmonte algorithm for correlated binary data for function genCorGen and addCorGen
Modified function genOrdCat - allows adjVar = NULL
Fixed bug in function addCorFlex

Added function catProbs - to be used to generate categorical data
Added binomial distribution
Added ability to specify formula in variance
Added function genMultiFac - generates multi-factorial design data
Added function addMultiFac - adds multi-factorial design data
Added function iccRE - generates required random effect variance for specified intra-class coefficients (ICCs)
Fixed bug in function genCorFlex
Fixed bug in numerous functions related to error checking and scoping
Fixed bug in function addCondition

Fixed function updateDef
Fixed bug in internal function genbinom
Added function genCorFlex - generate correlated data from variables that have different marginal distributions
Added function genCorFlex - generate correlated data from variables that have different marginal distributions, can be dependent on previously defined data

Added function genOrdCat - creates ordinal categorical data
Added function genFormula - creates a linear formula in the form of a string
Added function updateDef - modify existing data definition table (to be used in genData())
Added function updateDefData - modify existing data def table (to be used in addColumns())

Added error check to verify that specified distributions are valid
Added function genFactor - converts an existing (non-double) field in a data.table to a factor
Added function genDummy - creates dummy variables from an integer or factor field in a data.table
Added function defCondition - define distribution conditional on existing fields
Added function defReadCond - read in conditional definitions from external csv file
Added function addCondition - generate data based on conditional definition

Modified “nonrandom” data generation to allow “log”" and “logit”" link options.
Added function genCorGen - generate a new data.table with correlated data from various distributions.
Added function addCorData - add correlated data from various distributions to existing data.tables.

Fixed index variable issue related to generating categorical data
Fixed index variable issue related to generating longitudinal data
Fixed issue that arose when creating categorical variable in first field
Increased speed required to generate categorical data with large sample sizes
Categorical data can now accommodate probabilities condition on covariates
Fix: package data.table 1.10.0 broke genMissDataMat. genMissDataMat has been updated.