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.

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