simstudy 0.2.0

Deprecated Functions

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

New features

• 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

Minor improvements and fixes

• 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.

simstudy 0.1.16

• 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.

simstudy 0.1.15

• 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

simstudy 0.1.14

• 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.

simstudy 0.1.13

• 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.

simstudy 0.1.12

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