# BsplineQuantRegGui 0.2.3

### changes:
-generate custom function data does no more trigers auto knots.
-add boutons to set auto knots, change generate custom.
-add regression for degree 0 and more than 5.
-adapt conditional display of constraints to the degree.
-refactorise functions in the code : most functions of app.R are externalised.
-modularise UI : code is spread into several files for better readability.
-allow to use the old version (simpler) of the app with previous versions of the core.
-add demo shock and shock_basis
-In exported R code: the custom function the seed used for data generation.

### fixes:
- display degree of derivatives.
- remove condition exeption for version 2.6 of core.
- adding/removing knots confusions
- remove last knot ==>  preceding is selected

# BsplineQuantRegGui 0.2.2
### Fixes :
- update end knots multiplicities according to degree.
- temp data without scaling years
- updating auto_knot/manual_knot
- prevent problem of core program if version 0.2.4 with exeption and warning


### Problem of core program version 0.2.4:
- for degree=1: monotone regression with knot multiplicities cuase the solvers to hang
(fixed in version 0.2.5).


# BsplineQuantRegGui 0.2.1
### Changes
- add view human readable coefficents for the fitted spline
- add view derivatives (plots and coefficents)
- enhance R code output with additional information
- move demo in a demo tab
- enhance test with complete helper that copies the "FUNCTION SECTION" of the App.R


# BsplineQuantRegGui 0.2.0
###Changes
- add specific tests for the version
- add basis view tab
- add knot multiplicity management compatible with global
constraints and basis view
- improve  knots managenemt (removing, adding)
- secure end knots management, with multiplicity


#BsplineQuantRegGui 0.1.1
###Changes
- add tests


# BsplineQuantRegGui 0.1.0

## Initial Release (2026-07-26)

### Features

- Interactive Shiny interface for BsplineQuantReg
- Support for multiple data sources:
  - Test datasets
  - Temperature data (1880-1992)
  - Custom mathematical functions
  - CSV and Excel file import
- Interactive knot management:
  - Add/remove knots by clicking on the plot
  - Automatic knot distribution
- Constraint specification:
  - Uniform constraints across all intervals
  - Per-region constraints with visual selection
  - Support for monotonicity, convexity, and 3rd derivative constraints
- Visualization:
  - Interactive plotly graphics with zoom and pan
  - Multiple curve overlays
  - Customizable curve colors
  - Region highlighting
- Analysis tools:
  - Summary statistics
  - Coefficient display
  - R code generation for reproducibility
- Demo integration:
  - Run all BsplineQuantReg demos from the interface
- User experience:
  - Clean, modern UI with flatly theme
  - Progress indicators
  - Comprehensive error messages
  - Tabbed interface for organized information display