simstudy 0.8.1

New features

• Added the ability to generate data from an empirical distribution by using new functions genDataDensity and addDataDensity.
• The binary and binomial distributions can now accommodate a "log" link.

Minor fix

• addCorGen no longer requires all clusters to have the same size when using the rho and corstr arguments to define the correlation.
• Fixed an issue that prevented functions defined outside the global namespace from being referenced in defData.

simstudy 0.8.0

New features

• added the option to specify a customized distribution in defData and defDataAdd by
  specifying dist = "custom".
  *addPeriods now includes a new argument periodVec that allows users to designate
  specific measurement time periods using vector.

Minor fix

• Function logisticCoefs now correctly handles double dot notation.

simstudy 0.7.1

Breaking Changes

• trtAssign with ratio=NULL used to produce 0-index values but 1-indexed values if ratio was set. This was adjusted so now both versions produce 0-indexed values. This is a potentially breaking change for existing scripts that use the generated treatment values while assuming the old behavior (e.g. using hardcoded values to filter).

New features

• Function logisticCoefs determines the intercept and treatment/exposure
  parameter for a data generating process (based on a logistic regression model)
  that has a specific target population prevalence of a binary outcome, and an
  option to target a risk ratio, risk difference, or AUC.

Major fix

• Data generation speed has been improved for very large data sets with many
  variables.

Version 0.7.0

v0.7.0

Increment version number to 0.7.0.9000

simstudy 0.6.0

New features

• Added function blockExchangekMat and blockDecayMat. Users can now generate correlation matrices that can accommodate clustered observations over time where the within-cluster correlation in the same time period can be different from the within-cluster correlation across time periods.
• Updated function genCorMat to allow generation of cluster-specific correlation matrices in case one wants to induce variability in correlation across clusters.

Major fixes

• Overhauled function addCorGen to make it more flexible. It can now handle cluster-dependent data, and not just time-dependent data. In addition,
  performance has been dramatically improved.

Minor fixes

• Fixed bug in genSpline

simstudy 0.5.1

Minor fixes

• Fixed bug in trtAssign

simstudy 0.4.0

New features

• genOrdCat now supports non-proportional odds
• Added functions defRepeat and defRepeatAdd to facilitate the definition of multiple variables that share identical data definitions.

Minor improvements and fixes

• Fixed bug resulting from rounding error when specifying probabilities for 'categorical' distributions.

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