source: sasview/sasview/README.txt @ 9146ed9

ESS_GUIESS_GUI_DocsESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalccostrafo411magnetic_scattrelease-4.1.1release-4.1.2release-4.2.2ticket-1009ticket-1094-headlessticket-1242-2d-resolutionticket-1243ticket-1249ticket885unittest-saveload
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Merge pull request #53 from SasView?/release-notes

Add Known issues for release 4.1 (section 3 of readme.txt)

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1Release Notes
2=============
3
41- Features
5===========
6    - New in Version 4.1.0
7      ------------------
8      This incremental release brings a series of new features and improvements,
9      and a host of bug fixes. Of particular note are:
10     
11      - Correlation Function Analysis (Corfunc)
12        This performs a correlation function analysis of one-dimensional SAXS/SANS data,
13        or generates a model-independent volume fraction profile from the SANS from an
14        adsorbed polymer/surfactant layer.
15
16        A correlation function may be interpreted in terms of an imaginary rod moving
17        through the structure of the material. Γ1D(R) is the probability that a rod of
18        length R moving through the material has equal electron/neutron scattering
19        length density at either end. Hence a frequently occurring spacing within a
20        structure manifests itself as a peak.
21
22        A volume fraction profile \Phi(z) describes how the density of polymer
23        segments/surfactant molecules varies with distance from an (assumed locally flat)
24        interface.
25
26      - Fitting of SESANS Data
27        Data from Spin-Echo SANS measurements can now be loaded and fitted. The data will
28        be plotted against the correct axes and models will automatically perform a Hankel
29        transform in order to calculate SESANS from a SANS model.
30
31      - Documentation
32        The documentation has undergone significant checking and updating.
33
34      - Improvements
35        - Correlation function (corfunc) analysis of 1D SAS data added from CCP13
36        - File converter tool for multi-file single column data sets
37        - SESANS data loading and direct fitting using the Hankel transformation
38        - Saving and loading of simultaneous and constrained fits now supported
39        - Save states from SasView v3.x.y now loaded using sasmodel model names
40        - Saving and loading of projects with 2D fits now supported
41        - Loading a project removes all existing data, fits, and plots
42        - Structure factor and form factor can be plotted independently
43        - OpenCL is disabled by default and can be enabled through a fit menu
44        - Data and theory fields are now independently expandable
45      - Bug Fixes
46        - Fixes #667: Models computed multiple times on parameters changes
47        - Fixes #673: Custom models override built in models of same name
48        - Fixes #678: Hard crash when running complex models on GPU
49        - Fixes $774: Old style plugin models unloadable
50        - Fixes #789: stacked disk scale doesn't match cylinder model
51        - Fixes #792: core_shell_fractal uses wrong effective radius
52        - Fixes #800: Plot range reset on plot redraws
53        - Fixes #811 and #825: 2D smearing broken
54        - Fixes #815: Integer model parameter handling
55        - Fixes #824: Cannot apply sector averaging when no detector data present
56        - Fixes #830: Cansas HDF5 reader fully compliant with NXCanSAS v1.0 format
57        - Fixes #835: Fractal model breaks with negative Q values
58        - Fixes #843: Multilayer vesicle does not define effective radius
59        - Fixes #858: Hayter MSA S(Q) returns errors
60        - Numerous grammatical and contexual errors in documention
61
62
63    - New in Version 4.0.1
64      ------------------
65      This release fixes the critical bug #750 in P(Q)*S(Q).  Most damaging
66      it appears that the background term was being added to S(Q) prior to
67      multiplication by P(Q).
68
69
70    - New in Version 4.0
71      ------------------
72      This release fixes the various bugs found during the alpha and beta testing
73      - Improvements
74        - Support for reading data files from Anton Paar Saxess instruments
75        - Adds documentation on how to write custom models in the new framework
76      - Bug Fixes
77        - Fixes bug #604 Pringle model questions
78        - Fixes bug #472 Reparameterize Teubner-Strey
79        - Fixes bug #530 Numerical instabilities in Teubner Strey model
80        - Fixes bug #658 ASCII reader very broken
81
82
83    - New in Version 4.0 beta 1
84      --------------------
85      This beta adds support for the magnetic and multilevel models of 3.1.2
86      and along with a host of bug fixes found in the alpha.
87
88      - Model package changes and improvements
89         - All 3.1.2 models now available in new interface
90         - Old custom models should now still work
91            - '''NOTE:''' These will be deprecated in a future version. Old
92            custom models should be converted to the new model format which
93            is now the same as the built in models and offers much better
94            support.
95         - Custom model editor now creates new style models
96         - Custom model editor supports better error checking
97      - Documentation improvements
98        - Continued general cleanup
99      - Other improvements/additions
100         - Support for new canSAS 2D data files added
101         - Plot axes range can now be set manually as well as by zooming
102         - Plot annotations can now be moved around after being placed on plot.
103         - The active optimizer is now listed on the top of the fit panel.
104         - Linear fits now update qmin and max when the x scale limits are
105         changed.  Also the plot range no longer resets after a fit.
106      - Bug fixes
107         - Fixes bug #511 Errors in linearized fits and clean up of interface
108         including Kratky representation
109         - Fixes bug #186 Data operation Tool now executes when something is
110         entered in the text box and does not wait for the user to hit enter
111         - Fixes bug #459 plot context menu bug
112         - Fixes bug #559 copy to clipboard in graph menu broken
113         - Fixes bug #466 cannot remove a linear fit from graph
114         - Numerous bugs introduced in the alpha
115
116
117
118    - New in Version 4.0.0-alpha
119      --------------------
120      This alpha release brings a major overhaul of the model system. The new model
121      package allows rapid integration of custom models and access to polydispersity
122      without requiring a compiler.
123
124      - Model package changes and improvements
125         - Model interface moved to independent sasmodels package.
126         - Most models converted to new interface.
127         - Allows rapid integration of user-written models.
128         - OpenCL GPU utilization for faster fitting.
129         - Improved numerical integration of Bessel functions.
130      - SESANS integration and implementation
131         - Scripting interface added for analysis of SESANS data.
132         - Hankel transformation now accepts finite acceptance angles.
133         - 2D cosine transformation added for TOF SESANS analysis.
134      - Documentation improvements
135         - The documentation tree was restructured for a better end user experience.
136         - The documentation for each model was revamped and verified by at least
137           two people following the conversion of the model.
138         - Theoretical 1D (and 2D if applicable) scattering curves are auto-generated
139           and added to the model documentation for each model.
140      - Separation of GUI and calculations for future GUI enhancements
141      - Bug fixes
142         - Fixes bug #411 No stop button on simultaneous fit page
143         - Fixes bug #410 Error with raspberry model
144         - Fixes bug #364 Possible inconsistency in Poly_GausCoil model
145         - Fixes bug #439 Hayter Penfold MSA code needs checking
146         - Fixes bug #484 lammellerPC is precision limited
147         - Fixes bug #498 $HOME/.matplotlib conflicts
148         - Fixes bug #348 Control order in which fit parameters appear in the gui
149         - Fixes bug #456 Provide DREAM Results Panel with something to identify
150           data and age of results
151         - Fixes bug #556 Build script improvements for developers
152
153
154
155   - New in Version 3.1.2
156     --------------------
157     This release is a major stability improvement, having fixed a serious bug
158     that came to light since release 3.1.1. All users should upgrade.
159
160     - Fixes bug #468 broken remove constraint buttons in
161       simultaneous/constrained fitting panel
162     - Fixes bug #474 resulting from changes in 3.1.1 that had
163       introduced an error in the high-Q of slit-smeared models.
164     - Fixes bug #478 which would cause wx to run out of IDs and result
165       in SasView crashing even if left alone.
166     - Fixes bug #479 missing help button on simultaneous/constrained fit page
167     - Fixes bug #480 GUI resizing issues on simultaneous fit page
168     - Fixes bug #486 broken Report Results
169     - Fixes bug #488 redraw issues in fit page
170
171
172
173   - New in Version 3.1.1
174     --------------------
175     - Fixes bug #457 that prevented SasView from starting if the user was not
176       connected to the internet, or was behind a proxy server.
177
178   - New in Version 3.1.0
179     --------------------
180     - The documentation/help has had a complete overhaul including:
181       - A completely new presentation interface (Sphinx).
182       - Proof reading!
183       - Updating for latest features.
184       - A Help (or sometimes ?) button has been added to every panel, and some
185         sub panels if appropriate, linking to the appropriate section in the
186         documentation.
187       - The model help has been split so that the Details button now brings up
188         a very short pop-up giving the equation being used while HELP goes to
189         the section in the full documentation describing the model.
190       - Extensive help has also been added for the new optimizer engine (see
191         below) including rules of thumb on how and when to choose a given
192         optimizer and what the parameters do.
193     - The optimizer engine has been completely replaced. The new optimizer
194       still defaults to the standard Levenberg-Marquardt algorithm. However 4
195       other optimizers are now also available. Each starts with a set of default
196       parameters which can be tuned. The DREAM optimizer takes the longest but
197       is the most powerful and yields rich information including full parameter
198       correlation and uncertainty plots. A results panel has been added to
199       accommodate this.
200       - The five new optimizers are:
201         - A Levenberg-Marquardt optimizer
202         - A Quasi-Newton BFGS optimizer
203         - A Nelder-Mead Simplex optimizer
204         - A Differential Evolution optimizer
205         - A Monte Carlo optimizer (DREAM)
206     - New models were added:
207         - MicelleSphCoreModel (currently residing in the Uncategorized category)
208     - Existing models were updated:
209         - LamellarPS (bug in polydispersity integration fixed)
210         - RectangularPrismModel
211         - RectangularHollowPrismModel
212         - RectangularHollowPrismInfThinWallsModel
213     - Infrastructure to allow SESANS data to be fit with models was added. This
214       will become available in a future release but can currently be used from
215       the command line with some caveats.
216     - A number of bugs were fixed including a thread crashing issue and an
217       incorrect slit smearing resolution calculation.
218     - Implemented much more robust error logging to enable much easier
219       debugging in general but particularly the debugging of issues reported by
220       SasView users.
221     - A number of infrastructure tasks under the hood to enhance maintainability
222     - Upgrade from Wx 2.8 to Wx 3.0.2 which allows several new features but
223       required significant additional rework as well.
224     - Fully implemented Sphinx to the build process to produce both better
225       user documentation and developer documentation.
226     - Restructuring of the code base to more unified nomenclature and structure
227       so that the source installation tree more closely matches the installer
228       version tree.
229     - Code cleanup (an ongoing task) .
230     - Migration of the repository to github simplifying contributions from
231       non-project personnel through pull requests.
232
233   - New in Version 3.0.0
234     --------------------
235     - The GUI look and feel has been refactored to be more familiar for
236       Windows users by using MDI frames. Graph windows are also now free-
237       floating.
238     - Five new models have been added: PringlesModel, CoreShellEllipsoidXTModel,
239       RectangularPrismModel, RectangularHollowPrismModel and
240       RectangularHollowPrismInfThinWallsModel.
241     - The data loader now supports ILL DAT data files and reads the full meta
242       information from canSAS file formats.
243     - Redefined convention for specifying angular parameters for anisotropic
244       models.
245     - A number of minor features have been added such as permitting a log
246       distribution of points when using a model to simulate data, and the
247       addition of a Kratky plot option to the linear plots.
248     - A number of bugs have also been fixed.
249     - Save Project and Save Analysis now work more reliably.
250     - BETA: Magnetic contrast supporting full polarization analysis has been
251       implemented for some spherical and cylindrical models.
252     - BETA: Two new tools have been added:
253       - A generic scattering calculator which takes an atomic, magnetic or
254         SLD distribution in space and generates the appropriate 2D
255         scattering pattern. In some cases the orientationally averaged
256         (powder) 1D scattering can also be computed. Supported formats
257         include: SLD or text, PDB, and OMF magnetic moment distribution
258         file.
259       - An image viewer/converter for data in image format; this reads in
260         an image file and will attempt to convert the image pixels to
261         data. Supported formats include: TIFF, TIF, PNG, BMP, JPG.
262
263   - New in Version 2.2.1
264     --------------------
265     - Minor patch to support CanSAS XML v1.1 file format
266     - Added DataInfo for data in the DataExplorer and plots
267     - Added Maximize/Restore button in the title bar of the graphs
268     - Added a hide button in the toolbar of the graph panel
269     - The 'x' button now deletes a graph
270     - Edit SUM Model from the menubar can now generate and save more than one sum model
271     - Reports can now be saved in pdf format on WIN and MAC
272     - Made significant improvements to the batch/grid panel and fixed several bugs
273     - Fixed a number of other minor bugs
274
275   - New in Version 2.2.0
276     --------------------
277     - Application name changed to SasView
278     - New fully customizable Category Manager added for better management of
279       increasing number of models
280     - Improved the Grid Window functionality in the batch fitting mode
281     - Added a simpler Graph/Plot modification interface
282     - Added a new 'Data Operation' tool for addition, subtraction, multiplication,
283       division, of two data sets.
284     - The 'Sum Model' editor was extended and renamed 'Summation and Multiplication'
285       editor
286     - Added more plot symbols options for 1d plots
287     - Added improved trapping of compiling errors to the 'New model editor'
288     - Added some intelligent outputs (e.g., Rg, background, or rod diameter
289       depending on the choice of axis scale of the plot) to the linear fits
290     - Added more models
291
292   - Feature set from previous versions
293     -----------------------------------
294     - Perspectives Available
295       - Invariant calculator: Calculates the invariant, volume fraction, and
296         specific surface area.
297       - P(r) inversion calculator: Indirect Fourier transformation method.
298       - Fitting: the tool used for modeling and fitting 1D and 2D data to
299         analytical model functions
300       - Tools: provides a number of useful supplementary tools such as SLD
301         calculation
302
303     - Fitting
304       - Includes a large number of model functions, both form factors and structure factors.
305       - Support P(Q)*S(Q) for form factors that flag they can be so multiplied.
306       - Supports Gaussian, lognormal, Shulz, rectangular and custom distribution
307         functions for models that need to include polydispersity or for orientational
308         distributions if appropriate.
309       - Anisotropic shapes and magnetic moment modeling in 2D allow for a non-uniform
310         distribution of orientations of a given axis leading to modeling and fitting
311         capabilities of non azimuthaly symmetric data.
312       - User can choose to weight fits or not. If using weights, the user can choose
313         the error bar on each point if provided in the file, the square root
314         of the intensity or the intensity itself.
315       - Instrumental resolution smearing of model or fits is provided with several
316         options: read the resolution/point fromt he file. Input a pinhole resolution
317         or a slit resolution.
318       - Users can define the Qrange (Qmin and Qmax) for both 1D and 2D data for
319         fitting and modeling, but not graphically.  The range can be reset to the
320         defaults (limits of q in data set for a fit) with the reset button.
321       - A mask can be applied to 2D calculation and fitting.
322       - Normalized residual plots are provided with every fit.
323       - Model function help available through detail button or from the fitting panel.
324       - Simultaneous/(advanced)constrained fitting allows for fitting a single
325         data set or several different sets simultaneously with the application
326         of advanced constraints relating fit parameters to functions of other
327         parameters (including from a different set). For example thickness of
328         shell = sin(30) times the length.
329       - Models that are the sum of two other models can be easily generated through the
330         SUM Model menubar item.
331       - New Python models can be added on the fly by creating an appropriate Python
332         file in the model plugin directory. Two tools are provided to help:
333         An easy to use custom model editor allows the quick generation of new Python
334         models by supplying only the parameters and their default value (box 1)
335         and the mathematical function of the model (box 2) and generating the
336         necessary *.py file.  A separate advanced model editor provides a full Python
337         file editor.  Either way once saved the model becomes immediately available
338         to the application.
339       - A batch fitting capability allows for the analysis of a series of data sets to
340         a single model and provides the results in a tabular form suitable for saving
341         or plotting the evolution of the fit parameters with error bars (from within
342         the application).
343
344     - Tools
345       - A scattering length density calculator,including some X-ray information
346         is provided.
347       - A density to vol. fraction converter is provided
348       - In application access to a Python shell/editor (PyCrust) is provided
349       - An instrument resolution calculator, including possible gravitational and
350         TOF effects is provided
351       - A slit size calculator optimized for Anton Paar Saxess is provided.
352       - A kiessig fringe thickness calculator is provided
353
354     - Plots and plot management
355       - A 3D graphing option (for 2d data/results) is provided with the view
356         controlled by the mouse
357       - 2D plots are shown with an intensity color bar. 2D Color map can be user
358         adjusted.
359       - Supports output of plot to a variety of graphic formats. Supported formats
360         include: png, eps, emf, jpg/jpeg, pdf, ps, tif/tiff, rawRGBbitmap(raw, rgba),
361         and scalable vector graphic (svg/svgz)
362       - Supports ouput of data in plot (1 or 2D) to limited data formats
363       - Multiple data sets can be loaded into a single graph for viewing (but a fit
364         plot can currently only have a single plot).
365       - Extensive context sensitive plot/fitting/manipulation options are available
366         through a right mouse click pop-up menu on plots.
367
368     - Data management
369       - Supports 2 + column 1D ASCII data, NIST 1D and 2D data, and canSAS data
370         via plug-in mechanism which can easily allow other readers as appropriate.
371       - 2D data is expected in Q space but for historical reasons accepts the
372         NIST 2D raw pixel format and will do conversion internally.
373       - The full data and metadata available to SasView is viewable in ASCII via
374         right clicking on a data set and choosing Data Info in the DataExplorer
375         or on the plots
376       - Supports loading a single file, multiple files, or a whole folder
377       - An optional Data Explorer is provided (default) which simplifies managing,
378         plotting, deleting, or setup for computation. Most functions however do
379         not require access to the explorer/manager and can be accessed through
380         right click menus and the toolbar.  The data explorer can be re-started
381         from the menu bar.
382
383     - Data manipulation
384       - Support various 2D averaging methods : Circular, sectors, annular,
385         boxsum, boxQx and boxQy.
386       - A 2D data maks editor is provided
387       - 2D mask can be applied to the circular averaging.
388
389     - Miscellaneous features
390       - limited reports can be generated in pdf format
391       - Provides multiprocessor support(Windows only)
392       - Limited startup customization currently includes default startup
393         data folder and choice of default starting with data manager
394       - Limited support for saving(opening) a SasView project or a SasView analysis
395         (subproject) is provided.
396       - SasView can be launched and loaded with a file of interesty by double-clicking
397         on that file (recognized extension)
398       - A data file or data folder can be passed to SasView when launched from
399         the command line.
400       - Limited bookmarking capability to later recall the results of a fit calculation
401         is provided.
402       - Extensive help is provided through context sensitive mouse roll-over,
403         information bar (at the bottom of the panel), the console menu, and
404         access to the help files in several different ways.
405
406
4072- Downloading and Installing
408=============================
409
410   *** Note 1:  Much more information is available at www.sasview.org under links.
411                    Look in the 'For Developers' section and particularly the wiki at
412                www.sasview.org/trac/wiki.
413   *** Note 2:  If you have EXE or ZIP SasView installer, you won't need any of
414                the following.  However it is highly recommended that any
415                previous versions be un-installed prior to installing the
416                new version.
417
418   2.1- System Requirements
419        - Python version >= 2.5 and < 3.0 should be running on the system
420        - We currently use Python 2.7
421
422   2.2- Installing from source
423        - Get the source code
424          - to follow the current development version from source control use
425              git clone https://github.com/SasView/sasview.git
426              git clone https://github.com/bumps/bumps.git
427          - to install a specific version
428
429        - Build, install and run a specific release
430          - make sure the requirements below are already installed
431          - retrieve the source from https://github.com/SasView/sasview/releases
432          - open a command line window in the 'sasview-x.x.x' directory
433          - run 'python setup.py install'
434          - run 'python sasview.py' under the 'sasview' folder.
435
436        - Build, install and run the current development version
437          - clone the source from git; also clone bumps, which is developed in parallel
438              git clone https://github.com/SasView/sasview.git
439              git clone https://github.com/bumps/bumps.git
440          - open a command line window in the 'sasview' directory
441          - run 'python setup.py build'
442          - run 'python run.py'; this runs from the source directories, so you
443            don't have to rebuild every time you make a change, unless you are
444            changing the C++ model files
445
446        - The following modules are required (version numbers are what are used
447          in the windows release build):
448
449          - Common Packages
450            - reportlab 3.1.44
451            - lxml 3.4.4.0 (MAC 3.4.2.0)
452            - PIL 1.1.7
453            - xhtml2pdf 3.0.33 (MAC = not installed on build server)
454            - unittest-xml-reporting 1.12.0 (MAC 1.10.0)
455            - matplotlib Version Installed: 1.4.3 (MAC 1.1.1)
456            - bumps Version Installed: 0.7.5.9
457            - scipy Version Installed: 0.16.0b2 (MAC 0.11.0)
458            - periodictable Version Installed: 1.4.1
459            - setuptools Version Installed: 7.0 (MAC 12.0.5)
460            - sphinx Version Installed: 1.3.1 (MAC 1.3b2)
461            - pyparsing Version Installed: 2.0.3
462            - numpy Version Installed: 1.9.2 (MAC 1.6.2)
463            - html5lib Version Installed: 0.99999
464            - wx Version Installed: 3.0.2.0
465
466          - Windows Specific Packages
467            - pywin 219
468            - py2exe 0.6.9
469            - comtypes 1.1.1
470            - MinGW w/ gcc version 4.6.1 (WIN)
471            - vcredist_x86.exe (version 9.0.21022.8  -microsoft visual C 2008
472              re-distributable)
473            - Innosetup (WIN - isetup 5.4.2-unicode) - used to create distributable
474
475            *** Note: Windows build dependencies can be set up using anaconda. Instructions
476                can be found at http://trac.sasview.org/wiki/AnacondaSetup
477
478          - MAC Specifc Packages
479            - py2app 0.7.1
480
481
4823- Known Issues
483===============
484
485
486   4.1- All systems:
487      The conversion to sasmodels infrastructure is ongoing and should be
488      completed in the next release. In the meantime this leads to a few known
489      issues:
490        - The way that orientation is defined is being refactored to address
491        long standing issues and comments.  In release 4.1 however only models
492        with symmetry (e.g. a=b) have been converted to the new definitions.
493        The rest (a <> b <> c - e.g. parellelepiped) maintain the same
494        definition as before and will be converted in 4.2.  Note that
495        orientational distribution also makes much more sense in the new
496        framework.  The documentation should indicate which definition is being
497        used for a given model.
498        - The infrastructure currently handles internal conversion of old style
499        models so that user created models in previous versions should continue
500        to work for now. At some point in the future such support will go away.
501        Everyone is encouraged to convert to the new structure which should be
502        relatively straight forward and provides a number of benefits.
503        - In that vein, the distributed models and those generated by the new
504        plugin model editor are in the new format, however those generated by
505        sum|multiply models are the old style sum|multiply models. This should
506        also disappear in the near future
507        - The on the fly discovery of plugin models and changes thereto behave
508        inconsistently.  If a change to a plugin model does not seem to
509        register, the Load Plugin Models (under fitting -> Plugin Model
510        Operations) can be used.  However, after calling Load Plugin Models, the
511        active plugin will no longer be loaded (even though the GUI looks like
512        it is) unless it is a sum|multiply model which works properly.  All
513        others will need to be recalled from the model dropdown menu to reload
514        the model into the calculation engine.  While it might be annoying it
515        does not appear to prevent SasView from working..
516        - The model code and documentation review is ongoing. At this time the
517        core shell parellelepiped is known to have the C shell effectively fixed
518        at 0 (noted in documentation) while the triaxial ellipsoid does not seem
519        to reproduce the limit of the oblate or prolate ellipsoid. If errors are
520        found and corrected, corrected versions will be uploaded to the
521        marketplace.
522   
523   3.1- All systems:
524        - The documentation window may take a few seconds to load the first time
525          it is called. Also, an internet connection is required before
526          equations will render properly. Until then they will show in their
527          original TeX format.
528        - If the documentation window remains stubbornly blank, try installing a
529          different browser and set that as your default browser. Issues have
530          been noted with Internet Explorer 11.
531        - Check for Updates may fail (with the status bar message ' Cannot
532          connect to the application server') if your internet connection uses
533          a proxy server. Tested resolutions for this are described on the
534          website FAQ.
535        - The copy and paste functions (^C, ^V) in the batch mode results grid
536          require two clicks: one to select the cell and a second to select the
537          contents of the cell.
538        - The tutorial has not yet been updated and is somewhat out of date
539        - Very old computers may struggle to run the 3.x and later releases
540        - Polydispersity on multiple parameters included in a simultaneous/
541          constrained fit will likely not be correct
542        - Constrained/simultaneous fit page does not have a stop button
543        - Constrained/simultaneous fit do not accept min/max limits
544        - Save project does not store the state of all the windows
545        - Loading projects can be very slow
546        - Save Project only works once a data set has been associated with
547          a model.  Error is reported on status bar.
548        - There is a numerical precision problem with the multishell model when
549          the iner radius gets large enough (ticket #288)
550        - The angular distribution angles are not clearly defined and may in
551          some cases lead to incorrect calculations(ticket #332)
552
553   3.2- Windows:
554        - If installed to same directory as old version without first removing
555          the old version, the old desktop icon will remain but point to the
556          new exe version. Likewise all the start menu folders and items will
557          have the old name even though pointing to the new version.  Usually
558          safest to uninstall old version prior to installing new version anyway.
559
560   3.3- MAC:
561        - Application normally starts up hidden. Click icon in Dock to view/use
562          application.
563        - Multiprocessing does not currently work on MAC OS
564
565   3.4- Linux:
566        - Not well tested
567
568
5694- SasView website
570==================
571
572   - www.sasview.org.  This main project site is the gateway to all
573     information about the sasview project.  It includes information
574     about the project, a FAQ page and links to all developer and user
575     information, tools and resources.
576
577
5785- Frequently Asked Questions
579=============================
580
581   - www.sasview.org/faq.html
582
583
5846- Installer download website
585=============================
586
587   - Latest release Version
588     - https://github.com/SasView/sasview/releases
589   - Latest developer builds
590     - https://jenkins.esss.dk/sasview/view/Master-Builds/
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