NEWS.md

In expirest: Expiry Estimation Procedures

expirest 0.1.7

• The check_ancova() function was modified to favor the different intercepts / different slopes (dids) model when ANCOVA suggests that the common intercepts / different slopes (cids) model is appropriate, as the cids model is not practically relevant.
• References to the corresponding plotting functions was added to the help sections of the expirest_osle() and expirest_wisle() function.
• To the help sections of all internal functions the @noRd tag was added.
• Remove expect_length() tests that were used for ggplot graph labels. A planned update of ggplot2 would affect these tests because ggplot2 will not populate the plot$labels field before plot building anymore. For this reason, the test assumptions would be violated. The tests are thus removed to prevent errors.

expirest 0.1.6

• So far, exclusively the result from fitting individual models to each batch were reported in case of the different intercepts / different slopes (dids). model. With the new version, the results of the dids model obtained with pooled mean square error (dids.pmse) will be shown in addition. The results of the dids and the dids.pmse are reported generally in summaries.
• A new parameter has been added to the two plot functions allowing to select the model to be displayed. The show_grouping parameter is not relevant any more and is thus marked as deprecated.
• So far, the shelf life assessment failed when the results of a single batch were used. The new version allows to perform the assessment with a single batch, and the corresponding results are reported as dids model (while the model type will be n.a.).
• The function ggplot2::coord_cartesian() is used to prevent the loss of information displayed on graphs when the intervals have values going beyond the edges of the plot.
• In case of a specification with two sides, the shelf life assessment had to be done for each side one at a time. In the new version, the ordinary shelf life estimation will be performed on both sides, and the shortest shelf life result will be reported (together with the information about the side). For the what-if shelf life analysis, this does not apply because for this kind of assessment the critical side is known.
• The requirements on rl has been relaxed by taking into account the number of significant digits specified for the specification limit (sl_sf). For example, if ivl_side = "upper", sl = 0.5 and sl_sf = 1, rl values between 0.50 and 0.54 are accepted because the corresponding rounded rl values (to one significant digit) all are 0.5 and thus not greater than 0.5.
• An error in the calculation of sl and rl in case of sf_option = "loose" was corrected. The correction make sure that 5 is subtracted at the (sl_sf + 1)th or (rl_sf + 1)th figure if ivl_side is "lower" or that 4 is added at the (sl_sf + 1)th or (rl_sf + 1)th figure if ivl_side is "upper".
• Cyclomatic complexity was reduced as far as possible, i.e. the complexity of functions was reduced in favor of more (internal) functions.
• Examples have been slimmed down and the execution of some of the example code is prevented to reduce the execution time of examples.

expirest 0.1.5

• Expired and (possibly) invalid URLs were removed.

expirest 0.1.4

• Due to a misconception of object type tests the same value was reported for each rl value if the cics model was the appropriate model although the correct values were calculated. Now, the correct values (i.e. Delta, WCSL and Shelf.Life) are reported.
• The output of the summary() function has been harmonised between cics models on the one hand and dics / dids models on the other.
• The deprecated ggplot2 function aes_string() has been replaced by aes(). Variables containing column names as a character vector (var_name) are now called via .data[[var_name]]. In addition, size has been replaced by linewidth when used in the geom_line() function. In addition, visible binding for global variables was added.

expirest 0.1.3

• The graphical output of the dids model was not appropriate because the prediction was based on the whole model with interaction term (group x time, where group is a categorical variable and time is a continuous variable). Now, the prediction is based on individual models fitted to the different levels of group.
• Before, a decimal point was shown in case of numbers without decimal digits.
• Comparisons of type class() == "string" were replaced by inherits() calls.

expirest 0.1.2

• Examples that were wrapped by \dontrun{} although they are executable in < 5 sec are now unwrapped.
• Errors from examples that deliberately produce errors are caught by tryCatch() and are no longer wrapped by \dontrun{}.

expirest 0.1.1

• CRAN submission
• Exclusively use secure links
• Correct spelling errors

expirest 0.1.0

• Add further tests
• Add further and more illustrative examples
• Review documentation, correct spelling errors and assess all links
• Tidy up the DESCRIPTION
• Replace for loops with apply family functions
• Simplify code (add helper functions)
• Add generic functions

expirest 0.1.0.900x

expirest documentation built on April 4, 2025, 2:41 a.m.