NEWS.md

In bkaplan4/beezdemand: Behavioral Economic Easy Demand

beezdemand 0.1.3

New Features

Cross-Price Demand Models

• Added comprehensive cross-price demand model functionality:

• check_unsystematic_cp(): Check for unsystematic data in cross-price models

• fit_cp_nls(): Nonlinear model fitting for cross-price demand data

• fit_cp_linear(): Linear model fitting for cross-price demand data with options for fixed effects and mixed-effects models

• New utility functions for cross-price model objects:

  • summary(), plot(), glance(), and tidy() methods

• extract_coefficients(): Extract model coefficients in tidy format

• cp_posthoc_slopes() and cp_posthoc_intercepts(): Post-hoc comparisons for model parameters

• validate_cp_data(): Validate and filter cross-price demand data

• Added new vignette "How to Use Cross-Price Demand Model Functions" demonstrating:

• Required data structure for cross-price analyses

• Checking for unsystematic data

• Both two-stage and pooled model fitting approaches

• Linear and mixed-effects modeling options

• Model visualization and coefficient extraction

• Post-hoc comparisons

beezdemand 0.1.2

• No longer relies on nlmrt and instead relies on nlsr

• Fixes an issue where CheckUnsystematic may not flag certain cases when data are passed as tibble

• Fixes deprecated arguments in ggplot2

• Add ability to specify a start value for alpha in ExtraF() function

beezdemand 0.1.1

• Add experimental features for FitCurves(). These arguments are constrainq0, startq0, and startalpha. These arguments allow Q0 to be constrained so alpha is the only fitted parameter and allow for user-specified starting values.

beezdemand 0.1.0

• Package successfully on CRAN!

beezdemand 0.1.00

• Package should be ready for CRAN and is being submitted

beezdemand 0.0.95

New updates

• One major change that might affect previous scripts is that in output summary tables, the column formally named ID is now named id (lowercase)

• Cleaned up a few things here and there. The package is close for submission to CRAN as it passes R CMD check with no errors, warnings, or notes

beezdemand 0.0.91

New updates

• GetSharedK() updated to work better and faster at finding a reasonable value

• Internal helper functions added to optimize GetSharedK()

beezdemand 0.0.90

New updates

• ExtraF() now compares alpha and Q0

• A number of functions now allows you to specify the column names

beezdemand 0.0.85

New updates

• FitCurves() correctly pulls alpha and q0 standard errors when k is fitted as a free parameter. Also no longer accepts data transformations. Must be done prior to fitting using ChangeData().

• FitCurves() now fits mean/pooled data based on method argument.

• GetSharedK() no longer accepts data transformations.

beezdemand 0.0.84

New updates

• New ChangeData() will soon serve as the replacement to ReplaceZeros() and other arguments specified in FitCurves().

• For the time being, FitCurves() will actually output a list object. This may cause failures with old scripts. Try modifying scripts to take the first element out of the list. This will soon be taken care of.

Tidying

• Email contact has been changed and some minor updates to .rd files.

beezdemand 0.0.6

New features

• New FitMeanCurves() will fit curve to averaged or pooled data. Can also make plots.

• FitCurves() can now make plots.

• GetDescriptives() can make box and whisker plots.

Cleanup

• Old code from previous workflow is removed. Now all functions use longform data.

bkaplan4/beezdemand documentation built on June 11, 2025, 2:36 a.m.