Changes in version 1.6.0 (2026-06-01)                  

  - New qpcstats() function computes a Quantitative Predictive Check
    (QPC) score for continuous VPCs, including a composite qpc_score
    (lower is better) plus component penalties for coverage, MAE, drift,
    sharpness, and the Winkler interval score. Works with binless() and
    binning(), with stratification, prediction correction, and
    censoring. New vignette tidyvpc_qpc documents usage #66.
  - Added support for non-replicate simulated data. simulated() gains
    xsim and repl arguments, stratify() gains a data.sim argument, and
    binning()/binless() propagate observed-data bins and strata to the
    simulated data when sim is not a replicate of obs #63.
  - plot.tidyvpcobj() gains censoring.color and censoring.fill arguments
    to customize the colors used in BLQ/ALQ percentage plots #69.
  - R CMD check housekeeping: added Linux reference data for binless
    categorical tests and resolved remaining global-variable NOTEs #71.
  - The tidyvpc_RsNLME vignette is now shipped as a precompiled PDF (it
    was previously only available as source).

                 Changes in version 1.5.2 (2024-11-21)                  

  - Changes to the computational workflow for npde #59
  - Added varcorr argument to predcorrect method #60
  - CRAN fix #62

                 Changes in version 1.5.1 (2024-01-18)                  

  - Patch release that ensures unit tests do not fail when env var
    _R_CHECK_DEPENDS_ONLY_=true in R CMD check. As a result, the cluster
    dependency has been moved from Suggests to Imports.

                 Changes in version 1.5.0 (2023-10-30)                  

  - Support for generating percentage blq/alq plots using
    plot.tidyvpcobj. For VPC with censoring(), users can supply
    arguments censoring.type (options are 'none', 'blq', 'alq', or
    'both', defaults to 'none') and censoring.output (options are 'grid'
    or 'list', defaults to 'grid').#21
  - Plotting updates were made for ggplot2 version 3.4.0 to use
    linewidth instead of size for lines#39.
  - simulated.tidyvpcobj() detects if the number of simulated rows is
    not an integer multiple of the number of observed rows and adds the
    new xsim argument to test that x values match between replicated
    simulations. It will suggest that MDV filtering may not have
    occurred if either of these fails #35.
  - Prevent division by zero in predcorrect() transformation #31.
  - Usability enhancements for prediction corrected VPC (pcVPC), which
    include support for binning.tidyvpcobj() either before or after
    usage of predcorrect.tidyvpcobj(), and automatically performing
    LOESS pcVPC when binless.tidyvpcobj() is used. As a result, the
    loess.ypc argument is no longer required#43.
  - The binless.tidyvpcobj function is now compatible with usage of
    censoring.tidyvpcobj with ALQ data, in addition to BLQ data.#49
  - VPC can work with a single value in a group #51
  - A vignette for use with nlmixr2 was added #27

                 Changes in version 1.4.0 (2022-10-27)                  

  - Fix for npde calculation fix npde calc #16
  - Added R CMD check and test coverage workflows #18
  - Support headtails, maximum, and box binning methods #23
  - Usage of predcorrect() may now occur either before or after call to
    binless(loess.ypc=TRUE)
  - Additional unit tests

                 Changes in version 1.3.0 (2022-03-10)                  

  - Additional arguments in plot() function now include:
      - point.size
      - point.stroke
      - point.shape
      - point.alpha
      - ribbon.alpha
  - Fixed plotting issue to restore facet_wrap() usage for one-side
    stratification formula

                 Changes in version 1.2.0 (2021-10-01)                  

  - Add support for categorical VPC using binless and binning methods
  - Update plot() function to include plotting methods for categorical
    VPC

                 Changes in version 1.1.0 (2020-09-29)                  

  - Add NPDE functionality
  - Add unit tests
  - Bug fix for plotting of censored observations
  - Maintain forward compatibility with quantreg

                 Changes in version 1.0.0 (2020-03-26)                  

  - Initial CRAN release
  - Add binless() vpc functionality to existing code in vpcstats