simstudy 0.3.0

New features

• You can now use non-scalar variables with double-dot notation. See the Dynamic Data Definition Vignette.
• The 'categorical' distribution now supports the variance parameter to introduce categories other than 1...n.
• You can now use [trtAssign()] as a distribution with [defData()].

Minor improvements and fixes

• Added CITATION
• genData now warns that a set 'id' parameter will override previously defined 'id' names from the data definition.
• genData now handles NULL as 'id' value in data definitions (e.g. when definitions are not created via defData etc.) by defaulting to 'id'.
• Fix an error in genOrdCat when only a single adjustment variable is given but
  more than one new category will be created.
• Fix a bug where ..variables did not work within a function using the dist="beta".

simstudy 0.2.2

• Improve documentation and vignettes.

simstudy 0.2.1

• Add 'backports' for compatibility with R < 4.0
• Fix a bug on R < 4.0 in genOrdCat
• Current version is now only compatible with R version >= 3.3.0

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