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Change History

Version 1.7

UI Changes:

  • Rearranged start page to distinguish uncertainty calculations from other statistical calculations. Other tools may be accessed from the Project-Insert menu.
  • "Data Sets" has been renamed "R & R" repeatability & reproducibility.

Enhancements:

  • Added end-to-end measurement quality assurance calculation type based on draft NCSLI RP-19
  • Added optional tolerance entry to Uncertainty, R&R, and Curve Fit for caclulating probability of conformance
  • Added waveform feature calculations to curve fit module for min, max, peak-peak, threshold crossing, and pulse width determination with uncertainties
  • Moved curve fit prediction entry to the input page, to be saved with the config file
  • Ability to duplicate a project component from the project tree
  • Draw coverage regions on multivariate uncertainty output plots
  • Restore Monte Carlo to risk visualization
  • Added conditional PFA to risk curves tool
  • Allow asymmetric mincost guardbanding
  • Add Cpk, DPMO, and Sigma adjustment and output options to the Global Risk calculator

Version 1.6.5

Enhancements:

  • Allow entry of Type A measurement data directly into Uncertainty interface
  • Updated cost-based guardbanding to work with arbitrary distributions
  • (Re)add Level of Confidence vs Coverage Factor dropdown in expanded uncertainty results
  • Simplified data importing dialogs
  • Moved some Risk calculation functions to Tools menu
  • Added PFR Target guardbanding
  • Show worst-case specific risk in risk calculation report
  • Enabled dark mode switching

Bug Fixes:

  • Fixed PFR calculation with single-sided limits
  • Fixed guardbanding in Risk Curves tool
  • Fixed potential issue calculating uncertainty with expression containing log of constant value

Other updates:

  • Changed DataSets API to match other calculation types
  • Removed deprecated UncertCalc class
  • Upgraded UI to use QT6
  • Updated for compatibility with Python 3.12

Version 1.6.4

  • Added inline help documentation
  • Risk Analysis: Added calculation of conditional false accept risk and guardbanding based on conditional risk
  • Risk Analysis: Added option to set process distribution using ITP
  • Data Sets: Fixed errors when saving and displaying histograms with empty data
  • Other minor bug fixes

API Changes - Risk Analysis (possibly breaking):

  • Target PFA guardband calculation risk.guardband is now risk.guardband.target.
  • GB parameter of PFA_norm and PFR_norm methods must be float. To calculate GB using a defined method, use methods in risk.guardband_tur.*.
  • Removed approx keyword from risk PFA, PFR and guardband.target methods.
  • PFAR_MC returns an additional element for Conditional PFA.

Version 1.6.3

  • Added re() and im() functions for ModelComplex calculations
  • Fixed evaluation of constant model functions
  • Corrected possible skew in histogram of Monte Carlo Distribution output plot
  • Fixed issues with offset (eg temperature) unit conversion in uncertainty values
  • Fixed issue when importing a distribution with measurement units
  • Fixed entry of uncertainty level of confidence
  • Replaced setup.py with setup.cfg

Version 1.6.2

  • Improve convergence of S2 Interval Calculation minimization problem

Version 1.6.1

  • Enabled coth and acoth functions
  • Allow entering constant quantities with units into measurement model
  • Restored sensitivity coefficients in GUM Derivation report
  • Fixed GUI issues, including entering of chained uncertainty models, and reverse function names
  • Fixed some reports when Monte Carlo results contained NaN or Inf values

Version 1.6

UI changes:

  • Implemented guided uncertainty wizard interface
  • Added resizable splitters between sections in the window
  • Updated ANOVA reports to better align with GUM examples

API changes (possibly breaking):

  • Refactored API to use Model and ModelCallable classes, and deprecated UncertCalc class.
  • Updated return values into Results objects and Reports objects for consistency across all calculation types.
  • Updated for compatibility with Python 3.10 and 3.11. Minimum required version is 3.9.
  • Makes some imports from subpackages
  • Added API User Manual as Jupyter Notebooks in docs folder

Version 1.5.7

  • Improved plot and equation resolution when using high-DPI displays
  • Fixed importing CSV files with single column
  • Fixed accept/reject indication on risk calculation with asymmetric guardbands
  • Added configuration for Curve Fit full report
  • Corrected off-by-one error in autocorrelation calculation
  • Handle several edge-case errors
  • Fixed Jupyter representation of plots

Version 1.5.6

  • Allow up to 8 significant figures in reports
  • Account for process bias when computing decision risk from in-tolerance probability
  • Fixed reporting of Monte Carlo sensitivity coefficients for non-vectorizable functions
  • Fixed risk plotting when one specification limit is infinite, or invalid guardband factor is entered
  • Restored axis labels in risk distribution plots
  • Corrected the equation displayed for prediction band curve fit uncertainty based on u(y) mode

Version 1.5.5

  • Added joint Risk probability plot
  • Added YAML filter to file open/save dialog
  • Improved some report formatting
  • Fixed importing of data into summarized interval table
  • Prevent exception on corrupted settings file
  • Prevent exception when no name is given in distribution explorer
  • Restore warning when functions contain circular references

Version 1.5.4

  • Improve moving array data from DataSet into sweeps or curve fits
  • Fix issues when importing single-asset data into interval calculations
  • Show Deviation from Prior plot in interval variables method report
  • Improved automatic conversion of delta units

Version 1.5.3

  • Restore saving full report in curve fit calculation
  • Allowed units checker window to show message for each measurement function
  • Fixed save/load of dataset calculation in summary statistics mode
  • Fixed entering of correlation sweep ranges
  • Added more summary statistics to datasets histogram page
  • Fixed entering of curvtrap distribution parameters
  • Improvements to CSV data importing
  • Move PyQt5 to an optional dependency, only required for GUI

Version 1.5.2

  • Fixed Mac builds
  • Updated some Markdown tables for correct formatting
  • Added custom parameterizations of Exponential, Beta, and Lognorm distributions

Version 1.5.1

  • Select between "mean" and "median" in for distribution entry
  • Changed gamma distribution to input alpha and beta parameters, consistent with JCGM.
  • Added "observed itp" parameter to PFA_norm and PFR_norm functions
  • Fixed scrolling issue on Windows
  • Fixed issue when a measurement function is a constant
  • Updates for Python 3.8+ and dependency compatibility

Version 1.5

  • Improved uncertainty computation and derivation report in multi-output measurement models
  • Improved handling of callable functions with multiple outputs
  • Added colorbar to contour plots
  • Allow UncertComplex to compute uncertainty on callable functions
  • Suppress duplicate plot outputs in Jupyter
  • Fixed order of polynomial curve fit coefficients in report
  • Fixed date issue introduced by Matplotlib 3.3
  • Fixed font scaling issue in Windows with display scaling enabled

Version 1.4

  • Added calibration interval calculator, using NCSLI RP-1 Method A3 and Method S2
  • Implemented "Symbolic GUM Only" mode to show GUM equation results without entering values
  • Added risk sweeps mode for plotting PFA(R) vs. itp at various TUR, or other combinations
  • Report the correlation matrix between multiple uncertainty model equations
  • Save user-defined units with project files
  • Added distribution fit selection to Data Sets page
  • Added random seed option to Distribution Explorer
  • Sort the measured variables list alphabetically
  • Fixed issue entering t-distribution parameters before degrees of freedom is defined
  • Fixed display of degree symbol in output reports
  • Handle callable measurement models that raise exception with Unit Quantity inputs
  • Minor fixes for Python 3.8 compatibility

Version 1.3.6

  • Fixed potential units conversion error in Welch-Satterthwaite degrees of freedom calculation
  • Repeatability and reproducibility, as standard as standard deviation of the mean, can be imported from datasets
  • Added guardband sweep, probability of conformance plots to risk calculator

Version 1.3.5

  • Finished flattened uncertainty entry user interface
  • Fixed error in computing Poisson distribution mean for Monte Carlo calculation
  • Fix a possible unit conversion error

Version 1.3.4

  • Improved output reporting system. Adds right-click option to output reports for changing significant figures and number formats.
  • Flattened uncertainty entry user interface and improved keyboard navigation
  • GUI enhancements and fixes

Version 1.3.3

  • GUI enhancements and fixes
  • Added autocorrelation calculation to Data Sets and ANOVA
  • Improved user interface for data sharing between calculation types
  • Show confidence band on normal probability plots
  • Fix exception due to units incompatibility when calculating uncertainty of k**x
  • Fix units conversion issue with Monte Carlo of non-vectorizable Python functions

Version 1.3.2

  • Minor bug fixes

Version 1.3

  • Added processing and conversion of measurement units
  • Added Monte-Carlo option for computing risk probabilities
  • Other minor user interface enhancements

Version 1.2

Initial Public Release