Changelog

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

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

1.9.0 (2024-10-26)

Added

Table direct computation:
- unary functions: abs, acos, acosh, acot, acotd, acoth, acsc, acscd, acsch, asec, asecd, asech, asin, asind, asinh, atan, atand, atanh, ceil, cosd, cosh, cospi, cot, cotd, coth, csc, cscd, csch, exp, fix, floor, log, log10, log1p, log2, nextpow2, round, sec, secd, sech, sin, sind, sinh, sinpi, sqrt, tan, tand, tanh, var, acosd, not.
- binary functions: plus, minus, times, eq, ge, gt, le, ne, lt, rdivide, rem, power, pow2, or, mod, ldivide.
end magic keyword can be overloaded for classes (applied to table class).
#1250 head, tail functions for table and array.
#1248 removevars, renamevars functions for table.

Changed

#1259 Add macOS Sequoia and remove macOS Monterey CI support.
Qt 6.8 LTS support (used on Windows 64 bits binary).
Python 3.13.0 on Windows.
Boost 1.86 on Windows.

1.8.0 (2024-10-04)

Added

table Data Type:
- Introduced the table data type, offering enhanced functionality for structured data manipulation.
- Overloaded methods specific to the table data type:
  - disp, display for table display.
  - horzcat, vertcat for horizontal and vertical concatenation.
  - isempty to check if the table is empty.
  - isequal, isequalto for table comparison.
  - properties for accessing table metadata.
  - subsasgn for subscripted assignment.
  - subsref for subscripted referencing.
- Conversion functions added:
  - array2table: Convert an array to a table.
  - cell2table: Convert a cell array to a table.
  - struct2table: Convert a structure to a table.
  - table2array: Convert a table to an array.
  - table2cell: Convert a table to a cell array.
  - table2struct: Convert a table to a structure.
- Utility functions introduced:
  - width: Retrieve the number of columns in the table
  - height: Retrieve the number of rows in the table
  - istable: Check if a variable is of the table data type
Resize - Resize figure property.
#36 datenum format compatibility extended.
#37 datestr Convert date and time to string format.

Changed

CodeQL Github action updated.

Fixed

fix 'units' refresh for 'axes' object.

1.7.0 (2024-08-28)

Added

uicontrol Create user interface control (button, slider, edit, list box, etc.).
waitfor Block execution and wait for condition.
waitforbuttonpress — Wait for click or key press.
im2double — Convert image to double.
CloseRequestFcn — Close request callback for figure.
CreateFcn — Create callback for all graphic objects.
DeleteFcn — Delete callback for all graphic objects.
BusyAction — Busy action for all graphic objects.
Interruptible — Interruptible property for all graphic objects.
BeingDeleted — Being deleted property for all graphic objects.
KeyPressFcn, KeyReleaseFcn, ButtonDownFcn properties for figure.

Changed

Refactor the internal implementation of the 'system' built-in function.
Python 3.12.5 on Windows.

1.6.0 (2024-06-29)

Added

unique: Unique values.
ndgrid: Rectangular grid in N-D space.
nthroot: Real nth root of real numbers.
allfinite: Check if all array elements are finite.
j as imaginary unit number is also supported. example 3+2j equivalent to 3+2i.
FollowLocation option for weboptions
oneAPI Threading Building Blocks optional dependency.
Ubuntu 24.04 debian package.
Ubuntu 24.04 CI

Changed

sort: speed optimization.
Windows dependencies updated and rebuild with minimal dependencies:
- Qt 6.7.1,
- Visual C++ 2022 Redistributable v14.40.33810.00,
- boost 1.85,
- Python 3.12.4,
- Intel Math Kernel Library 2024.1.1,
- Intel runtime,
- SLICOT,
- gettext 0.22.5,
- cmake 3.30.0 rc3,
- libsndfile 1.2.2,
- portaudio 19.7.5,
- taglib 2.0,
- libzip1 1.3.1,
- libcurl 8.8.0,
- icu4c 74.2,
- libffi 3.4.6,
- libxml2 2.11.7
Unicode® Standard, Version 15.1 support
simdutf 5.2.8
fast_float 6.1.1
dtl 1.2.0

Fixed

#1210 bode did not unwrap phase.
#1206 balance yields wrong Transformation Matrix.
#1205 diag may return wrong sub-diagonals.
#1202 buildhelpmd does not generate SUMMARY as expected.
#1201 Matrix Exponential expm might give wrong results.
#1200 Matrix Parsing/Evaluation trouble.

1.5.0 (2024-05-31)

Added

dictionary data type.
- dictionary: Object that maps unique keys to values.
- configureDictionary: Create dictionary with specified key and value types.
- insert: Add entries to a dictionary.
- lookup: Find value in dictionary by key.
- remove: Remove dictionary entries.
- entries: Key-value pairs of dictionary.
- keys: Keys of dictionary.
- values: Values of dictionary.
- types: Types of dictionary keys and values.
- numEntries: Number of key-value pairs in dictionary.
- isConfigured: Determine if dictionary has types assigned to keys and values.
- isKey: Determine if dictionary contains key.
- keyHash: Generate hash code for dictionary key.
- keyMatch: Determine if two dictionary keys are the same.
bernsteinMatrix: Bernstein matrix.
orderedfields: Order fields of structure array.
Python interface (part 3):
- #1160 Python operators in Nelson.
- keyHash, keyMatch for python objects.
- isa builtin support python types.
- python dictionary to Nelson dictionary dictionary(pyDict)
- conversion dictionary to python dictionary.

Changed

help files generated sorted by name on all platforms.
on windows, Qt libraries used are in debug mode.

Fixed

#1195 strcmp({'a'},["a"]) did not return expected value.

1.4.0 (2024-04-27)

Added

Python interface (part 2):
- #1168 Run Python script file from Nelson.
- #1141 Help about Managing Data between Python and Nelson.
- #1149 python bytes, and bytearray types were not managed.
- #1163 pyenv searchs python by version on Windows.
- #1164 Embed python distribution on Windows.
- #1167 Help about how to install Python package from Nelson.
- numpy types support if numpy available.
- pyenv: can use environment variables to set values.
getenv: Retrieve the values of several environment variables.
pyrun: Python code object allowed as first input argument.
nelson --without_python starts nelson without python engine.
skip_testsuite: allows to skip test suite dynamically on condition.

Changed

Allow to call method of a variable of CLASS/HANDLE type like a function (currently, only plugged for python subtype).
#1142 Github Actions updated.
#1157 Qt 6.7 support (used on Windows 64 bits binary).
copyfile, isfile, isdir, mkdir allow string array type as input.
warning about 'Matrix is singular to working precision' for inv matrix.
tests webtools skipped if connection fails or not available.

Fixed

#1144 test_run markdown help file had a typo.
#1143 Linux Snapcraft version did not allow to use python.
#1148 pyrun('print(A)','A','A',string(NaN)) did not return expected value.
single(int64([1 2; 3 4])) returned a wrong value.
py.tuple, py.list compatibility increased.
pyenv did not manage python's path with space on Windows.
Matio 1.5.27 compatibility on ArchLinux.
Ubuntu 24.04 LTS support.
#1178 Fedora 40 support (CI).
#1134 [CI] MacOS X Ventura restored.

1.3.0 (2024-03-30)

Added

Python interface (part 1):
- CMake: Optional Python3 detection.
- pyenv Change default environment of Python interpreter.
- pyrun Run Python statements from Nelson.
- Major types conversions are compatible (numpy in the next upcoming version).
ArchLinux packaging (https://aur.archlinux.org/packages/nelson-git).
contour Contour plot of matrix.
contour3 3-D contour plot.
shiftdim Shift array dimensions.
xcorr2 2-D cross-correlation.
deconv Deconvolution and polynomial division.
vecnorm Vector-wise norm.
normpdf Normal probability density function.
#310 gammaln Logarithm of gamma function.
#1112 gradient Numerical gradient.
#1126 isspace Determine which characters are space characters.

Changed

#1110 Eigen master branch (352ede96e4c331daae4e1be9a5f3f50fff951b8d) ready to use.
#1134 [CI] MacOS X Ventura disabled (Install dependencies fails)
struct supports scalar string array as field name.

Fixed

#1110 add help about build and use C/C++ on fly.
#1124 unexpected result from long statements on Multiple Lines.
#1127 Nelson could crash if an mxn characters is displayed in the variable browser.
#1125 Unsupported colon operator with char operands.
Missing 'zoom in', 'zoom out' icons for help viewer in linux package.
gcd without argument returned wrong error message.
#1133 [CI] [ARCH LINUX] Warning about MPI.

1.2.0 (2024-02-25)

Added

Recursive completion on Graphic handle, struct, handle, class (properties, methods).
Adding links between documents about mex and supported compilers.
GitHub CI for macOS Sonoma (Apple Silicon) support.
Export to ... context menu for console and text editor as pdf.
CTRL + Mouse wheel or CTRL + +/- to zoom in/out on console, editor, help.
Toolbar for figure with print, zoom in, zoom out, rotation, pan, restore axes.
zoom , pan , rotate3d functions.
MenuBar, ToolBar figure properties.
Window menu on graphic window, list all others available windows.
feature builtin (undocument features, debug, tests, ...) content can change with next releases.
GridAlpha, GridColor, View properties for Axes.
CTRL+C in help viewer, copy selected text.
checkupdate function and check update menu.
isScalarStringArray iinternal API C++ method.

Changed

Clicking on an axis automatically sets it as the current axes object.
Clicking on an figure automatically sets it as the current figure object.
saveas exports the figure as a PDF page with centered alignment.
Default color of grid for axes.
Default figure size updated.
Default MarkerFaceColor value for compatibility.
view function returns azimuth and elevation values.
Camera view reworked.
Minimal screen resolution supported 800x600.

Fixed

Change directory with file browser line editor did not work as expected.
Template to create a function with file browser was wrong.
Do not allow to select multiple variable in workspace browser.
File browser checks if files with the extension ".m" have a valid name before enable 'run' context menu.
Paste in editor with multiple tab.
Starting the Nelson desktop was taking longer than necessary.

1.1.0 (2024-01-29)

Added

Nelson Desktop environment: file browser, command history, workspace browser, desktop layout.
#1074 Roadmap v2.0.0
#1044: LU matrix factorization.
#1080 LineStyle, LineWidth properties were not implemented for surface objects.
sky, abyss colormaps.

1.0.0 (2024-01-04)

Nelson 1.0.0 has been released.

Nelson is an interactive, fully functional environment for engineering and scientific applications. It implements a matrix-driven language (which is largely compatible with MATLAB and GNU Octave), with advanced features such as 2-D 3-D plotting, image manipulation and viewing, a codeless interface to external C/C++/FORTRAN libraries, native support for various C types, and a host of other features.

Features

Types managed by Nelson:
- double and double complex: scalar, vector, matrix 2D, N dimensions array, sparse matrix.
- single and single complex: scalar, vector, matrix 2D, N dimensions array, sparse matrix.
- logical: scalar, vector, matrix 2D, N dimensions array, sparse matrix.
- character array (UNICODE supported).
- string array (UNICODE supported).
- integers 8, 16, 32, 64 signed and unsigned: scalar, vector, matrix 2D, N dimensions array.
- handle objects.
- anonymous functions,
- all types can be overloaded.
OpenMP and SIMD extensions used.
2D and 3D plotting with high-level plot commands.
Parallel Computing Module.
Fast Fourrier Transformation functions based on FFTW and MKL wrapper.
SLICOT (Subroutine Library in Systems and Control Theory) interfaces (optional).
Control System module.
Message Passing Interface (MPI): functions for parallel computing.
JSON decode/encode data support.
HDF5 high-level functions I/O,
HDF5 used as default data file format (.nh5) load/save workspace,
MAT-file compatible load/save workspace,
Foreign Function Interface C/Fortran.
Interfacing C/C++ or Fortran with Nelson (build and load external code on the fly).
MEX C API compatibility.
Nelson Engine API for C (compatible with MEX Engine). Call Nelson from your C code as engine.
RESTful API web service.
Inter-process communication between Nelson's process.
The QML engine enables nelson programs to display and manipulate graphical content using Qt's QML framework.
Component Object Model (COM) client interface: binary-interface standard for software components on Windows.
Write/Read xlsx files on Windows using COM.
Embedded Nelson code editor.
Help engine:
Generate help files using Nelson dedicated functions. View your generated help files as html, markdown, pdf, gitbook or directly in Nelson help viewer.
Tests engine:
Validate your algorithm using Nelson dedicated functions. Export the test results under the xUnit reports format.
Profiling and Code coverage tools for Nelson's language:
Nelson has a built-in profiler that is very useful to profile your code and find out what script or function is taking the most time.
Nelson cloud: Instant access to Nelson anywhere from an web browser.
Module skeleton to extend Nelson available here:
- template macros and builtin,
- basic template macros only.
Nelson Modules Manager (nmm) : package manager for Nelson

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