Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog.

0.7.12 (2023-12-23)

Changed

  • #674 Migrate sources to nelson-lang github organization.
  • #775 quit, exit, startup.m, finish.m behavior reworked for compatibility.
  • JSON for Modern C++ version 3.11.3 used on all platforms.
  • {fmt} 10.1.1 (6f95000) used.
  • Fedora 39 CI support.

Fixed

  • cellfun did not check type of second input argument.

Added

  • filter 1-D digital filter.

  • control system module (part 2):

    • freqresp Evaluate system response over a grid of frequencies.
    • step Simulate continuous time model of a state space model or transfer function.
    • lsim Plot simulated time response of dynamic system to arbitrary inputs.
    • dc2 Convert model from discrete to continuous time.
    • c2d Convert model from continuous to discrete time.
    • augstate Append state vector to output vector.
    • kalman Design Kalman filter for state estimation.
    • evalfr Evaluate system response at specific frequency.
    • nyquist Nyquist plot of frequency response.
    • ord2 Generate continuous second-order systems.
    • append Group models by appending their inputs and outputs.
    • feedback Feedback connection of multiple models.
    • parallel Parallel connection of two models.
    • series Series connection of two models.
    • ssdelete Remove inputs, outputs and states from state-space system.
    • ssselect Extract subsystem from larger system.
    • tzero Invariant zeros of linear system.
    • tf2ss Convert transfer function filter parameters to state-space form.
    • ss2tf Convert state-space representation to transfer function.
    • minreal Minimal realization or pole-zero cancellation.
    • ssdata Access state-space model data.
    • tfdata Access transfer function data.
    • gram Controllability and observability Gramians.
    • hsvd Hankel singular values of a state-space or transfer function model.
    • damp Natural frequency and damping ratio.
    • balreal Gramian-based balancing of state-space realizations.
    • lqry Form linear-quadratic (LQ) state-feedback regulator with output weighting.
    • #957 dlqr Linear-quadratic (LQ) state-feedback regulator for discrete-time state-space system.
    • #961 lqed Discrete Kalman estimator design from continuous cost function.
    • #960 lqe Kalman estimator design for continuous-time systems.
    • #955 lqr Linear-Quadratic Regulator (LQR) design.
    • #943 dare Solve discrete-time algebraic Riccati equations.
    • #951 care Continuous-time algebraic Riccati equation solution.
    • #945 ctrbf Compute controllability staircase form.
    • #946 ctrb Controllability of state-space model.
    • #963 obsv Observability matrix.
    • #964 obsvf Compute observability staircase form.
    • #949 acker Pole placement gain selection using Ackermann's formula.
    • #950 bdschur Block-diagonal Schur factorization.
    • #952 cloop Close unity feedback loops.
    • #953 compreal Companion realization of transfer functions.
    • #959 gensig Create periodic signals for simulating system response.

0.7.11 (2023-11-29)

Added

  • hist Histogram plot.
  • bar Bar graph.
  • scatter Scatter plot.
  • stem Plot discrete sequence data.
  • stairs Stairstep graph.
  • fill 2-D patch.
  • pie legacy pie chart.
  • subsref Subscripted reference.
  • subsasgn Redefine subscripted assignment.
  • substruct Create structure argument for subsasgn or subsref.
  • deal Distribute inputs to outputs.
  • Intel compiler support.

Changed

  • axis limits recalculate with hggroup.
  • axes forces focus on current axe.
  • function_handle parenthese precedence.
  • patch and fill manages FaceAlpha.
  • visibility title and labels.
  • object constructor must be in '@' directory and no more in parent directory (compatibility).
  • subsref, subsasgn compatibility with substruct.
  • To display a percent sign, you need to use a double percent sign (%%) in the format string (compatibility).
  • French translation updated (100%, Thanks to weblate contributors)
  • #997 Macos BigSur Github CI support removed.
  • Qt 6.6.1 on win64 CI build.

Fixed

  • A = []; A(false) = zeros(3, 0) did not return an empty matrix but an error.

0.7.10 (2023-10-27)

Added

  • private functions/folders support (to limit the scope of a function).

  • syntax extended to facilitate the creation of literal integers without loss of precision:

    • example: 18446744073709551615u64, 18446744073709551615i64 (similar to rust syntax)

  • flintmax('like', p) syntax added.

  • int64, uint64 warning about double-precision.

  • #570 balance: Diagonal scaling to improve eigenvalue accuracy.

  • isobject Check whether the input is an object.

  • cell2mat Convert cell array of matrices to single matrix.

  • #948 blkdiag Create a block diagonal matrix from 2D matrices of different sizes.

  • kron Kronecker tensor product.

  • strjust Justify strings.

  • control system module (part 1):

    • #967 control system module template.
    • #944 mag2db, db2mag, pow2db, db2pow functions.
    • #968 zp2tf: Zero-pole to transfer function conversion.
    • #954 dcgain: Low-frequency (DC) gain of LTI system.
    • #965 padecoef: Padé approximation of time delays.
    • #958 esort: Sort continuous-time poles by real part.
    • dsort: Sort discrete-time poles by magnitude.
    • #962 lyap: Continuous Lyapunov equation solution.
    • dlyap: Discret Lyapunov equation solution.
    • abcdchk Verifies the dimensional compatibility of matrices A, B, C, and D.
    • ss: State-space model.
    • tf: Transfer function model (display, horzcat, vertcat, size).
    • isct: checks if dynamic system model is in continuous time.
    • isdt: checks if dynamic system model is in discret time.
    • isstatic: checks if model is static or dynamic.
    • islti: checks if variable is an linear model tf, ss or zpk.
    • issiso: checks if dynamic system model is a single input and single output.
    • zero: Zeros and gain of SISO dynamic system.
    • pole: Poles of dynamic system.
    • bode: Bode plot of frequency response, magnitude and phase data.

Changed

  • some modules (nig, modules_manager, help_browser) reworked to use private functions.
  • Windows 64 bit CI and release use Qt 6.6.0

Fixed

  • #940 title bar on dark theme on Windows.
  • help viewer using dark theme.
  • adjust position xlabel on figure.
  • #976 wrong output when reading a file with fscanf with size argument.
  • #975 Legend color (and width) is not matching that of curve in figure.
  • #988 anonymous function serialization '.^' and '^' are inversed.

0.7.9 (2023-09-18)

Changed

  • #488 overloading functions:

    • all types including basic types can be overloaded.
    • overload is now fully compatible using '@' syntax and precedence.
    • all operators were reworked to support compatible overload.

  • .* operator optimized.

  • conv2 optimized.

  • Boost 1.82 used on Windows.

  • Internals:

    • class, function_handle types reworked.
    • types order updated.
    • rework validator module.
    • functions finder reworked.
    • file watcher reworked.
    • operators reworked.
    • repmat, ones, NaN, Inf reworked.

  • function_handle display is more compatible.

Added

  • #491 Anonymous functions
  • --withoutfilewatcher executable argument. disable file watcher for current session.
  • <--FILE WATCHER REQUIRED --> test_run option.
  • #853 MacOs 13 ventura CI

Fixed

  • #916 openblas micromamba on macos required to link libgfortran

0.7.5 (2023-05-27)

Changed

  • BS::thread_pool v3.5.0
  • simdutf to 3.2.9.
  • {fmt} to 10.0.0.
  • fast_float to 4.0.0.
  • cast reworked to be more compatible.
  • colon reworked to be more compatible (operator uses unary overload).
  • CMake 3.26.3 on Windows

0.7.4 (2023-04-27)

Added

  • Qt 6.5 support.
  • #802: bitand, bitor, bitxor functions.
  • issorted Determine if array is sorted.
  • num2cell Convert array to cell array with consistently sized cells.
  • hggroup Create group object.
  • colorbar('off') deletes colorbar associated with the current axes.
  • waterfall Waterfall plot.
  • ribbon ribbon plot.
  • figure property: GraphicsSmoothing Axes graphics smoothing.
  • text property: FontSmoothing.
  • surf property: MeshStyle.
  • chatGPT example.
  • graphics examples about 3D polygons:
    • utah teapot example.
    • nefertiti mask example.
    • stanford bunny example.

Changed

  • Windows installer: allow to install for current user (no administrator rights required).
  • figure without axes has a color.
  • figure can be created not visible.
  • grid minor toggles the visibility of the minor grid lines.
  • mesh reworked.
  • extraction on empty matrix for compatibility.
  • ones, eye, inf, nan allow negative index (replaced by 0) for compatibility.
  • Windows 64 bits version embeds Qt 6.5.
  • allows if with empty statements

Fixed

  • weboptions did not manage HeaderFields as expected.
  • update cacert.pem.
  • #895: Micromamba linux build fails after packages updates.

0.7.3 (2023-03-28)

Added

  • patch Create patches of colored polygons.
  • ancestor Ancestor of graphics object.
  • hexadecimal color code managed example: '#DDFF00'.
  • validatecolor Validate color values.
  • #851: Build with micromamba environment (linux and macOS)

Changed

  • Figure property Position uses position based on bottom left position for compatibility.
  • internal: boost no more used to read/write json files.
  • internal: taglib library is optional.
  • version date updated with each build.

Fixed

  • #866: Close menu on figure can crash on linux.
  • graphic hierarchy was not fully destroyed after close or delete.
  • labels were not displayed correctly when the logarithmic scale was enabled.
  • #869: missing help files in linux package.

0.7.2 (2023-02-27)

Changed

  • cmake project reworked. It should be easier to package Nelson on linux platforms (Thanks to @JohanMabille)
  • Debian package generated (beta - feedback welcome).
  • modulepath reworked and extended.
  • C++ API: IsCellOfStrings(ArrayOf) replaced by ArrayOf::isCellArrayOfCharacterVectors()
  • C++ API: header CheckHelpers.hpp replaced by InputOutputArgumentsCheckers.hpp
  • C++ API: ToCellStringAsColumn replaced by ArrayOf::toCellArrayOfCharacterColumnVectors
  • api_nelson methods moved to type modules
  • Remove internal circular dependency about error and warning.
  • Exports minimum headers in package.

Fixed

  • disp, display did no more support overloading.
  • image did not save all values for XData and YData.
  • Github CI Monterey and Ubuntu 22.04 (dependencies install) fixed.
  • some warnings.

0.7.1 (2023-01-29)

Added

  • drawnow: Update figures and process callbacks.
  • DrawLater property added to figure graphics object.
  • interp1 linear interpolation 1D.
  • #736: bone, cool, copper, hot, jet, pink, turbo, viridis, white colormaps.
  • Visible property to figure graphics object.
  • #809: NumberTitle property to figure graphics object.
  • AlphaMap and Colormap properties added to Axes graphics object.
  • LineStyleOrder property of 'axes' used for plot and plot3.
  • ColorOrderIndex and LineStyleOrderIndex properties added to axes graphics object.
  • Interpreter property added to text graphics object.
  • tex special characters support for text and ticks graphics object.
  • delete for graphics objects.
  • imread Read image from graphics file.
  • imwrite Write image to graphics file.
  • imshow Display image.
  • surface Primitive surface plot.
  • #808: pcolor Pseudocolor plot.
  • mesh Mesh surface plot.
  • meshz Mesh surface plot with curtain.
  • #807: loglog Log-log scale plot.
  • CHANGELOG 0.7.x family.

Changed

  • Graphics objects property names check is strict (compatibility).
  • Some speed optimization with graphics objects.
  • surf reworked to use surface.

Fixed

  • #823: default LineStyle for a line was wrong with marker.
  • CTRL+C was not catched on advanced cli for linux and macos.
  • colors in colorbar were not in the good order.
  • warnings detected by CodeQL.
  • #824: VariableCompleter was not filtered by prefix.

Previous changelog

Changelog v0.6.x

Changelog v0.5.x

Changelog v0.4.x

Changelog v0.3.x

Changelog v0.2.x

Changelog v0.1.x