2026-02-18 New Version (v0.15.1) is online: Release v0.15.1

• Add Help menu action for version check and installer download
• update git submodule link to qwt library

2026-02-13 New Version (v0.15.0) is online: Release v0.15.0

Fitting @ Fit.Curve(s)

• Improved iteration stopping logic for all fitting algorithms
• Improved GUI and QProgressDialog behavior
• Added button to show active batch table
• iAdded SAS actions to Import/Export/Analysis menus

GUI

• Refactored Help menu
• Renamed QtiSAS menu to SAS-Tools
• Improved project opening behavior
• Polished macOS menu behavior: icons always visible
• macOS: moved Settings to Edit; Qt/About to Help; renamed Preferences → Settings

Performance & Code Quality

• Optimized Graph scaling, legend updates, marker bounds, and axis handling :: fast reaction in huge projects
• Refactored `Graph::setLinOrLogAxis`
• Fixed formatting that broke `clang-format` job

Platform

• macOS/Windows: QTI file registration for release
• macOS: corrected sasmodels installation instructions

2026-01-27 New Version (v0.14.4) is online: Release v0.14.4

• refactored batch fit mode
• optimized graph autoscaling and data updates during batch fitting
• improved performance when adding rows to large tables

2026-01-19 New Version (v0.14.3) is online: Release v0.14.3

• changing the folder highlights the active widget now
• optimized plot updates after data modification
• several refactorings were completed across the DAN module, including sensitivity and mask tools, file handling, matrix processing
• configuration dialogs were improved with clearer symbol indexing, corrected default colors
• graph and matrix handling was cleaned up, including safer default settings behavior
• internal code organization was improved through renaming, file relocations, and consistency updates in Python and SIP bindings.

2025-11-27 New Version (v0.14.2) is online: Release v0.14.2

• ui: update font-family to cross-platform
• combobox-in-table: remove obsolete Qt3/Qt4 disconnect()
• Graph3D: fix crash with negative Y dimension
• fittable: simulate curve correctly when no table is available
• compile/sasview: full support for “pure” Python models
• CurvesDialog: connect loglog/linlin buttons to common function
• Fit function could communicate with QtiSAS project via python script.
• By updating via git-get button the PySAS.h file will be placed in FitFunctions: “IncludedFunctions/PySAS.h”.
• Inside fitting function python code could be called via PySAS::scriptCaller(const std::string &scriptCode)

Examples

#include "IncludedFunctions/PySAS.h"
 
PySAS::scriptCaller("newTable()");
 
PySAS::scriptCaller("a=newTable('RESULTS');"
                    "a.setText(1,1,'9999')"
                    );
 
double I = PySAS::Iq("guinier", 0.001, 50);
 
 

2025-11-14 New Version (v0.14.1) is online: Release v0.14.1

• Ship Python in bundle for macOS
• Refactor Graph rescaling
• Improve table/graph creation for maximized widgets
• Fix PieCurve::color()
• Fix covarMatrix view on macOS

Adding python packages in macOS

Python is shipped with macOS bundle. By default, it is a clean python installation having PyQt6 package. To add other python packages pass pip install <package> as argument to qtisas.app:

open /Applications/qtisas.app --args pip install numpy
open /Applications/qtisas.app --args pip install sasmodels

The packages are installed to ~/.config/qtisas/python/site-packages directory.

2025-10-22 New Version (v0.12.14) is online: Release v0.12.14

• …
• plot2d: error-bar generation logic changed
• plot2d: rewritten drawErrorBars() function to draw error bars only within the canvas
• plot2d: corrected bug with box instead of error bar in svg/png… formats
• plot2d/plotDialog: added small error-cap-widths 0, 1, 2 and 4
• terminal_line/pythonScript:added missed QMetaType::LongLong output format
• terminal_line/pythonScript: send error messages to the scripting console instead of showing a popup
• terminal_line: restore focus after execution
• terminal_line: add command completion and historization inside
• …

2025-10-02 New Version (v0.12.13) is online: Release v0.12.13

• Dan@Python: added several functions to python class Dan
• Dan/infoExtractorScript: implemented as script and callable from interface
• Dan: added option of HDF5 accumulation
• Dan: added new option to accumulate files via active table (columns)
• Table/setColumnValue: adde option to set step when filling table column from..to
• ParserHDF5: added function to check data dimensions
• ParserHDF5: added function to accumulate internal datasets (int and double)
• Fittable/color-list: synchronized with system color list
• ApplicationWindow::saveGraphAsProject(): added “Archive Graph..” option
• ConfigDialog/2D-Plots/Curves: symbol color list selection implemented
• legendwidget: symbol size limits changed
• mdisubwindow::closeEvent: buttons display correct actions: Cancel/Hide/Delete
• Table: header sections are set to be not movable
• OpenProject: statistical tables are recalculated before opening the graphs
• Tablestatistics: recalculated automatically during project opening if the name contains an underscore.
• Legendwidget: improved symbol size scaling
• Statistics on columns: fixed bug – first column should be of text type.
• Colorbutton: solved bug of showing color-selection-widget in the main screen

Dan: new python scripts

- Dan.newSession()
- Dan.selectInstrument(“KWS1”)
- Dan.selectMode(“(SM) Standard Mode”)
- Dan.setPathIn(“/Users/pipich/data/kws1/”)
- Dan.setPathOut(“/Users/pipich/data/kws1/”)
- Dan.openSession(“script”)
- Dan.infoExtractor(“info”, “2,7,8,9,10,11”, “22483..22583”)
- Dan.infoExtractor(“info-new”, “4,7,8,9,10,11”, “*”)
- … todo many steps more …

2025-09-04 New Version (v0.12.12) is online: Release v0.12.12

• Unordered List ItemMultiLayer::layer function optimized
• MultiLayer::findBestLayout function optimized
• ApplicationWindow::autoArrangeLayers(): font-scaling-option included
• ci: use qt 6.9.2

Windows Installer Updated:

✔ Case #1: Single Layer: open a graph


✔ Initial Font: 15

✔ Case #1: “Scale Fonts” options should be activated


✔ ”Scale Fonts” could be selected in Preferences

✔ Case #1: Push ”Automatic Layout” button


✔ Push ”Automatic Layout” button

✔ Case #1: Result:


✔ Initial Font: 29
All Steps:
1. Scaled to full space
2. Kept aspect ratio (if option active)
3. Scaled Fonts (if option active)

✔ Case #2: MULTI-Layer case:


✔ Push ”Automatic Layout” button

✔ Case #2: Result:


All Steps:
1. Scaled to full space
2. Auto-Ordered layouts
3. Kept aspect ratio (if option active)
4. Scaled Fonts (if option active)

2025-08-28 New Version (v0.12.11) is online: Release v0.12.11

• windows/install: added msvc installation →
• windows/install: added python and pyqt installation →
• LegendWidget: space between symbol and text changed
• LegendWidget: adjusted handling when the legend contains only symbols
• settings: save fonts as strings using QFont::toString()/fromString
• last used qtisas version is saved to settings
• macOS: use “Helvetica Neue” as default starting font instead of hidden “.AppleSystemUIFont”
• ci: upd windows release job
• ci: upd windows build
• ci: upd linux images

2025-08-11 Started “transfer” QtiPlot manual to QtiSAS one:

https://www.qtisas.com/manual

Windows Installer Updated:

✔ Select Components


✔ Python with PyQt6:

… QtiSAS is now always distributed with Python. You can install the required versions through this interface, or follow the instructions below to install them manually.


✔ MSVS 2022:

… If you plan to compile fitting functions, you can install Microsoft Visual Studio 2022 (free Community Edition) from here, or follow the instructions below to install it manually.

✔ Licence Agreement


✔ Accept the “ GNU GENERAL PUBLIC LICENSE”

✔ Start Menu Folder


✔ Select the stars menu folder

✔ Installation Summary


✔ Review the selected components to be installed

✔ Installing


✔ Grant permission to install the program. Administrator rights are required.

✔ Finished


✔ DONE!

✔ Wellcome Page


✔ Just push Next

✔ Installation Folder


✔ Select folder where QtiSAS will be installed

2025-07-28 New Version (v0.12.9) is online: Release v0.12.9

In the current release:

• Image export has been improved
• Image and print previews have been corrected
• Pasting images from the clipboard into a graph is now supported
• Resolution of copied graphs/plots has been increased
• The “Custom Script Action” section has been reorganised
• A public repository for Custom Script Actions is now available: https://iffgit.fz-juelich.de/qtisas/python-actions
• The first example action — exporting a graph as SVG/PDF — is released as graph-export
• A Git-Get button is integrated to download actions directly from the repository.
• Icon size is no longer fixed, and should now display better on 2K and 4K monitors.
• The “File Location” tab under Preferences has been streamlined to show only relevant folders: https://www.qtisas.com/_media/qtisas/settings-file-location.png
• …

The graph-export example is explained here: https://www.qtisas.com/custom-actions

✔ Where? Location? In “Preferences…


✔

✔ How to add custom action? Button in “Scripting” Menu…


✔

✔ Custom action Interface: Git-Get button …


✔ Custom actions downloaded from repository: https://iffgit.fz-juelich.de/qtisas/python-actions

✔ Custom action repository: graph-export example …


✔

✔ Calling “graph-export” custom action …


✔

✔ graph-export” custom action: opened …


✔

✔ graph-export“ custom action: options …


✔

2025-05-21 New Version (v0.12.2) is online: Release v0.12.2

In the v.12.0 version of the QtiSAS windows version is compiled with native compiler MSVC2022 and obtained finally python scripting.

• The Windows version is now compiled with MSVC and supports Python scripting.
• The MSVC 2022 compiler is now used to build fitting functions for Windows.
• The After.Fit option now supports Python scripts.
• A repository for fitting functions has been established.
• In the Compile interface, pressing the git-get button downloads all functions from the repository.
• All SasView fitting functions have been added to the repository and adapted for use in QtISAS.

Python Scripts: Examples


SANS School


Git Help