From users at lists.sasview.org Thu Jan 23 05:46:29 2025 From: users at lists.sasview.org (Annika Stellhorn via users) Date: Thu, 23 Jan 2025 10:46:29 +0000 Subject: [SasView Users] =?utf-8?q?ICNS2025_mini-symposium_on_=E2=80=9CMag?= =?utf-8?q?netic_SAS_Data_Analysis_=E2=80=93_State-of-the-Art_and_Future_I?= =?utf-8?q?mprovements=E2=80=9D_now_open_for_registration?= Message-ID: <834E4DED-AC48-4485-81E9-61982C7E546D@ess.eu> Dear colleagues, We are pleased to announce the ICNS-2025 mini-symposium on “Magnetic SAS Data Analysis – State-of-the-Art and Future Improvements”, which will take place during the ICNS on Wednesday, July 9th, 2025, at the Bella Center in Copenhagen. Please note that participants must be registered for ICNS-2025 to attend. Registration for the symposium is now open at the following link: https://indico.ess.eu/event/3704/ A current bottleneck in maximizing the outcomes of magnetic and polarized SANS experiments is a lack of a common, robust, maintained, and intuitive data analysis tool. The aim of this mini-symposium is to identify constraints and define missing functionality in existing analysis programs with a view to preparing for their implementation into SasView. Several improvements to the handling and simulation of magnetic scattering patterns in SasView have recently been implemented, including upgrades to the Generic Scattering Calculator tool, and the integration of additional slicer (ROI) options. But future developments might include, for example, features dedicated to the analysis of 2D/3D images, independent nuclear and magnetic fitting models, the simultaneous fitting of multiple cross-sections, or Reverse Monte Carlo techniques. Some of this functionality may also be of interest to other communities generating quasi-crystalline or anisotropic data such as Rheo-SAS and SAS-Tomography. A goal of this mini-symposium is to identify that functionality with the broadest impact. Interested participants are therefore cordially invited you to join us for an afternoon of short presentations and topical discussions designed to help identify the future opportunities for advancing the analysis of these systems. On behalf of the SasView developers’ team, Paul Butler, Stephen King, Wojtek Potrzebowski, and Annika Stellhorn -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Sat Mar 22 14:11:25 2025 From: users at lists.sasview.org (Stephen King - STFC UKRI via users) Date: Sat, 22 Mar 2025 18:11:25 +0000 Subject: [SasView Users] New SasView Release (6.0.1) & Upcoming Workshops Message-ID: Dear Members of the SasView Users List, We hope you have had a productive start to 2025. We would like to take this opportunity to inform you that we have just released an update to SasView, SasView 6.0.1, available as usual through the SasView website. This is a minor release but fixing some bugs in 6.0.0., including several associated with plotting. For those that prefer to build their installation from source (eg, Linux users), SasView is now also available through Flatpak. We regret we are still unable to provide a conda distribution for SasView 6.x, but work is in progress to develop wheels available on PyPI. This work is anticipated to be part of the next release slated for June 2025. In other news, SasView contributors from the Magnetic SANS community are organising two events later this year which may be of interest to some of you: * The first is a mini-symposium on “Magnetic SAS Data Analysis – State-of-the-Art and Future Improvements”, which will take place during the ICNS-2025 conference on Wednesday, July 9th, 2025, at the Bella Center in Copenhagen, Denmark; * The second is a SasView Contributor Camp to be hosted by TU Munich, Garching, Germany between November 11-18th, 2025. This will largely follow the format of the hugely successful Camp in Delaware last year, but with more of a focus on the needs of the Magnetic SAS and allied communities (ie, those SAS users producing more complex data than isotropic powder patterns). Thank you for your continued support! And, as ever, if you would like to get involved, please see https://www.sasview.org/contribute/ for further information. The SasView Development Team -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Thu Jul 3 17:33:35 2025 From: users at lists.sasview.org (Stephen King - STFC UKRI via users) Date: Thu, 3 Jul 2025 21:33:35 +0000 Subject: [SasView Users] New SasView Release (6.1.0) & Upcoming Workshops Message-ID: Dear Members of the SasView Users List, It gives us great pleasure to inform you that we have just released an update to SasView, SasView 6.1.0, available as usual through the SasView website. This is a major release with some exciting new tools, some important improvements and, of course, the usual bug fixes. We believe this to be one of our most significant releases to date. For those that prefer to build their installation from source (eg, Linux users), SasView is also available through Flatpak. We regret we are still unable to provide a conda distribution for SasView 6.x, but work is in progress to develop wheels available on PyPI (our wheels are just a little too big at the moment!). This release comes, not entirely coincidentally, just a couple of days ahead of the ICNS-2025 conference in Copenhagen/Lund. Several SasView Developers and Contributors will be present, so please do say 'hello' if you are able! SasView contributors from the Magnetic SANS community are also organising two events this year which may be of interest to some of you: * The first is a mini-symposium on “Magnetic SAS Data Analysis – State-of-the-Art and Future Improvements”, which will take place during the ICNS-2025 conference on Wednesday, July 9th, 2025, at the Bella Center in Copenhagen, Denmark; * The second is SasView Contributor Camp XIV to be hosted by TU Munich, Garching, Germany between November 11-17th, 2025. This will largely follow the format of the hugely successful Camp in Delaware last year, but with more of a focus on the needs of the Magnetic SAS and allied communities (ie, those SAS users producing more complex data than isotropic powder patterns). Thank you for your continued support! And, as ever, if you would like to get involved, please see https://www.sasview.org/contribute/ for further information. The SasView Collaboration -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Tue Sep 30 11:41:17 2025 From: users at lists.sasview.org (Stephen King - STFC UKRI via users) Date: Tue, 30 Sep 2025 15:41:17 +0000 Subject: [SasView Users] Upcoming Marketplace outages Message-ID: Dear SasView User, Over the next few weeks work will be ongoing to move the SasView Model Marketplace to a new server. This will inevitably mean that there will be periods when the Marketplace will be unavailable. Please bear with us whilst we undertake this critical infrastructure work. And if you have an urgent need for a Marketplace model during an outage, please email help at sasview.org as the Contributor Team will have access to a backup copy. The SasView Contributor Team -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Fri Oct 3 10:32:31 2025 From: users at lists.sasview.org (Stephen King - STFC UKRI via users) Date: Fri, 3 Oct 2025 14:32:31 +0000 Subject: [SasView Users] SasView 6.1.1 Released Message-ID: Dear Members of the SasView Users List, We are pleased to inform you that we have just released an update to SasView, SasView 6.1.1, available as usual through the SasView website. This is a bug fix release rectifying some issues identified in the recent 6.1.0 release this summer. For those that prefer to build their installation from source (eg, Linux users), SasView is also available through Flatpak. However, it may take a few more days before 6.1.1 makes its way onto Flathub. We would also like to remind you about the SasView Contributor Camp XIV to be hosted by TU Munich, Garching, Germany between November 11-17th, 2025. In particular, in response to community demand the scope of this Camp has been expanded from its original focus on the needs of the Magnetic SAS and allied communities (ie, those SAS users producing more complex data than isotropic powder patterns) to now include Life Sciences. Please see the planning wiki at https://github.com/SasView/sasview/wiki/ContributorCampXIV for more information. Thank you for your continued support! And, as ever, if you would like to get involved, please see https://www.sasview.org/contribute/ for further information. The SasView Collaboration -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Wed Oct 8 16:21:02 2025 From: users at lists.sasview.org (Abdoltajedini, Fatemeh via users) Date: Wed, 8 Oct 2025 20:21:02 +0000 Subject: [SasView Users] =?windows-1252?q?Bug_Report_=96_Unexpected_Behavi?= =?windows-1252?q?or_of_Polydispersity_in_SASview_v6?= Message-ID: Dear SASview Team, I would like to report a possible bug I encountered in SASview v6 related to polydispersity. Description of the issue: When I add polydispersity to a model, the scattering curve changes far more dramatically than expected. Even small values (e.g., 0.05 on radius) cause the intensity and curve shape to shift disproportionately, which does not seem physically reasonable. Steps to reproduce: 1. Open SASview v6. 2. Load the [Core-Shell Cylinder]. 3. Fit the model without polydispersity – the curve looks reasonable. 4. Add a small polydispersity (e.g., 0.05 on radius). 5. The curve changes strongly in both shape and magnitude. Expected behavior: Polydispersity should broaden or smooth features of the scattering curve, but not cause large intensity changes or unrealistic distortions. Observed behavior: Even small polydispersity values produce a strong, unrealistic effect. Environment: * SASview version: 6.x * Operating system: Windows * Data used: experimental data Thank you for your help and for maintaining this valuable software. Best regards, Fatemeh -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Thu Oct 9 10:49:13 2025 From: users at lists.sasview.org (Stephen King - STFC UKRI via users) Date: Thu, 9 Oct 2025 14:49:13 +0000 Subject: [SasView Users] =?windows-1252?q?Bug_Report_=96_Unexpected_Behavi?= =?windows-1252?q?or_of_Polydispersity_in_SASview_v6?= In-Reply-To: References: Message-ID: Dear Fatemeh, Thank you for your report. I just tried your steps to reproduce with one of our example datasets using SasView 6.1.0, and 6.1.1 we released last week. I don't see any behaviour that immediately leaps out at me as 'unrealistic'. So I'd like to understand exactly what you mean by this. Could you post a few slides with annotated screenshots illustrating what you have done/see, please? By the way, you posted to users at sasview.org which goes to a wider audience than just the developers. If you are comfortable with that, that's cool. Otherwise reply to help at sasview.org. Kind regards, Steve King On behalf of the SasView Developer Community ________________________________ From: users on behalf of Abdoltajedini, Fatemeh via users Sent: 08 October 2025 21:21 To: users at sasview.org Subject: [SasView Users] Bug Report – Unexpected Behavior of Polydispersity in SASview v6 Dear SASview Team, I would like to report a possible bug I encountered in SASview v6 related to polydispersity. Description of the issue: When I add polydispersity to a model, the scattering curve changes far more dramatically than expected. Even small values (e.g., 0.05 on radius) cause the intensity and curve shape to shift disproportionately, which does not seem physically reasonable. Steps to reproduce: 1. Open SASview v6. 2. Load the [Core-Shell Cylinder]. 3. Fit the model without polydispersity – the curve looks reasonable. 4. Add a small polydispersity (e.g., 0.05 on radius). 5. The curve changes strongly in both shape and magnitude. Expected behavior: Polydispersity should broaden or smooth features of the scattering curve, but not cause large intensity changes or unrealistic distortions. Observed behavior: Even small polydispersity values produce a strong, unrealistic effect. Environment: * SASview version: 6.x * Operating system: Windows * Data used: experimental data Thank you for your help and for maintaining this valuable software. Best regards, Fatemeh -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Fri Oct 10 12:44:28 2025 From: users at lists.sasview.org (Paul Butler via users) Date: Fri, 10 Oct 2025 12:44:28 -0400 Subject: [SasView Users] Upcoming SasView tutorial Message-ID: Dear SasView Users, In anticipation of the upcoming SasView contributor camp to be held in Garching Nov 11-17 this year, the host institution requested a SasView tutorial be offered prior to the camp. This is taking the form of a two half day intermediate level SasView usage tutorial offered over zoom on Thursday and Friday October 23 and 24. The program is available at: https://indico.frm2.tum.de/event/594/ If you are interested in the program, registration is now open to anyone on a first come first served basis via the above link. Cheers Paul Butler, Annika Stellhorn, and Neelima Paul -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Wed Nov 5 11:39:48 2025 From: users at lists.sasview.org (via users) Date: Wed, 5 Nov 2025 11:39:48 -0500 Subject: [SasView Users] help troubleshooting the low scattering intensity saxs data Message-ID: <2C2ACB68-D4EC-44F2-AC60-88E58AD26E2E@icloud.com> Hi I need help from SASView experts. I started using it to fit my liposome saxs data just today for the first time. My scattering intensity data are very low ranging from 10^-3 to 10^-1. So, when I use lamellar_hg fit for my unilamellar popc vesicles I get ginormous chi squared values like 10^12. Please help me to improve my fitting. Thank you! Best Meko -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Thu Nov 6 06:28:37 2025 From: users at lists.sasview.org (Dirk Honecker - STFC UKRI via users) Date: Thu, 6 Nov 2025 11:28:37 +0000 Subject: [SasView Users] help troubleshooting the low scattering intensity saxs data In-Reply-To: <2C2ACB68-D4EC-44F2-AC60-88E58AD26E2E@icloud.com> References: <2C2ACB68-D4EC-44F2-AC60-88E58AD26E2E@icloud.com> Message-ID: Dear Meko, Thanks for reaching out to us for your question. Could you please send some data or the sasview project to test and reproduce the behaviour. All the best Dirk Dirk Honecker dirk.honecker at stfc.ac.uk ISIS Pulsed Neutron and Muon Source STFC Rutherford Appleton Laboratory | Harwell Campus Office R3 1.41 | Didcot | OX11 0QX | United Kingdom Mobile: +44 7738 260880 | Tel: +44 1235 567112 ________________________________ From: users on behalf of via users Sent: 05 November 2025 4:39 PM To: users at sasview.org Subject: [SasView Users] help troubleshooting the low scattering intensity saxs data Hi I need help from SASView experts. I started using it to fit my liposome saxs data just today for the first time. My scattering intensity data are very low ranging from 10^-3 to 10^-1. So, when I use lamellar_hg fit for my unilamellar popc vesicles I get ginormous chi squared values like 10^12. Please help me to improve my fitting. Thank you! Best Meko -------------- next part -------------- An HTML attachment was scrubbed... URL: From users at lists.sasview.org Thu Nov 6 06:28:37 2025 From: users at lists.sasview.org (Dirk Honecker - STFC UKRI via users) Date: Thu, 6 Nov 2025 11:28:37 +0000 Subject: [SasView Users] help troubleshooting the low scattering intensity saxs data In-Reply-To: <2C2ACB68-D4EC-44F2-AC60-88E58AD26E2E@icloud.com> References: <2C2ACB68-D4EC-44F2-AC60-88E58AD26E2E@icloud.com> Message-ID: Dear Meko, Thanks for reaching out to us for your question. Could you please send some data or the sasview project to test and reproduce the behaviour. All the best Dirk Dirk Honecker dirk.honecker at stfc.ac.uk ISIS Pulsed Neutron and Muon Source STFC Rutherford Appleton Laboratory | Harwell Campus Office R3 1.41 | Didcot | OX11 0QX | United Kingdom Mobile: +44 7738 260880 | Tel: +44 1235 567112 ________________________________ From: users on behalf of via users Sent: 05 November 2025 4:39 PM To: users at sasview.org Subject: [SasView Users] help troubleshooting the low scattering intensity saxs data Hi I need help from SASView experts. I started using it to fit my liposome saxs data just today for the first time. My scattering intensity data are very low ranging from 10^-3 to 10^-1. So, when I use lamellar_hg fit for my unilamellar popc vesicles I get ginormous chi squared values like 10^12. Please help me to improve my fitting. Thank you! Best Meko -------------- next part -------------- An HTML attachment was scrubbed... URL: