Changes in version 0.4.0-6                       

Changes

  - checkCmat has been replaced by reduceCons a more comprehensive
    function to reduce constraints, removing redundant and underlying
    equality constraints. See ?reduceCons.
  - reduceCons can now be controlled from cirls.control.
  - Changed default of dim when constraining crossbases. Now defaults to
    var whatever the specification.
  - Some changes to examples for better clarity.

Bug fixed

  - boundConstr.crossbasis was sometimes removing constraints.
  - Bounds for constraints on crossbasis, were sometimes forced to 0
    even when the initial bounds were different.

                       Changes in version 0.4.0-5                       

New feature

  - Shape-constrained DLNM: methods dedicated to crossbasis objects. Add
    constraints to the exposure-response association or on the
    lag-response association (for DLMs).
  - New Constr method: boundConstr to contraint the bounds of an
    association
  - New parameter range fhor shapeConstr: constrain subrange of x

Changes

  - Some changes to the documentation for the shapeConstr generic

Bug fixes

  - Fixed how the terms are checked in the constr formula
  - Fixed issues with the shapeConstr.strata method

                       Changes in version 0.4.0-4                       

  - New shapeConstr method for strata from dlnm
  - New example on isotonic regression
  - Some amendments to the help

                       Changes in version 0.4.0-3                       

  - Slight improvement of the main help page and examples.

                       Changes in version 0.4.0-2                       

New features

  - On attach message for the package.
  - New package overview help page.
  - Addition of three datasets
  - New examples
  - checkCmat now contains switches to return the reduced Cmat and
    disable warning when redundant/equality constraints are found.

Changes

  - Some improvement of help pages

                       Changes in version 0.4.0-1                       

Changes

  - Some changes in internal functions streamlining the building of the
    constraint matrix and bounds. Should not impact the use apart from
    the odd error message.
  - checkCmat now returns reduced Cmat/lb/ub, and better identifies
    equality constraints.

                 Changes in version 0.4.0 (2025-09-12)                  

New features

  - New method shapeConstr to build constraint matrices for
    shape-constrained splines. Currently works with classes ns, bs (from
    package splines), ps and onebasis (from dlnm). Also includes a
    default method for more general bases.
  - New function zerosumConstr for constraint matrices for a zero sum
    such as used in compositional regression for instance.
  - New function edf to compute observed and expected degrees of freedom
    for a fitted cirls object.
  - Method logLik.cirls for AIC and BIC computation.
  - New function uncons to return the unconstrained model.
  - Constraints can now be passed as a formula through a new argument
    called constr.
  - New function buildCmat to build a constraint matrix using a model
    frame and a list of matrices or constraint formula (or both).

Changes

  - Changed the default QP solver to quadprog after some expriments.
  - Added the argument complete in inferential functions, to allow
    keeping or discarding aliased coefficients. Same interpretation as
    in vcov.lm.
  - vcov now allows returning the usual variance-covariance returned by
    vcov.glm when trunc = FALSE.
  - simu_coef renamed as simulCoef and now includes an argument to set
    the seed.
  - check_cmat has been renamed checkCmat. It also now returns logical
    vectors instead of vectors of indices
  - Now the Cmat, lb and ub used are not returned in the control object
    from the result of glm with cirls.fit.
  - Now lb and ub can be passed by term.
  - The element aic of a fitted cirls object is penalised by the number
    of active constraints.

Bug fixes

  - Fixed issue with R matrix when there was less observations than
    variables.
  - Fixed error from solve.QP when there are large values in the
    response.
  - Now checkCmat also checks if there are "zero" constraints.
  - Fixed a bug in simulCoef. Now includes a switch to simulate under
    the constrained or unconstrained model.
  - simulCoef returns a NA matrix with a warning in the case of a
    saturated model.

                        Changes in version 0.3.0                        

New features

  - Added check_cmat and coef_simu to the list of exported functions as
    they can be useful for specific use cases.
  - Added full documentation.

Bug fixes

  - In check_cmat, removed the call to limSolve::nnls() to be replaced
    by coneproj::coneB (also a NNLS solver) to reduce the number of
    dependencies.

                        Changes in version 0.2.1                        

New features

  - Initialization of a short documentation for several functions.

Bug fixes

  - cirls.control now checks for constraint matrix irreducibility.
  - cirls.control is now exported.
  - changed the function to determine redundant constraints in
    check_cmat
  - No warning message on row rank of Cmat anymore
  - Cmat is now checked only when there are more than one row

                        Changes in version 0.2.0                        

New features

  - Method vcov for cirls to compute corrected covariance matrices
  - Method confint for cirls to compute feasible confidence intervals
  - Added several QP solvers: quadprog (the original one), osqp and
    coneproj.

Changes

  - A warning is now displayed when Cmat is not of full row rank
  - vcov and confint return NA matrices if Cmat is not of full row rank
  - Changed residual df computation to account for active constraints
  - Replaced bvec by lb (lower bound) and ub (upper bound). Allows
    equality constraints.
  - Added cirls class to glm output

Bug fixes

  - cirls.fit has the same behaviour as glm.fit when model is singular:
    fill with NAs