source: sasview/sasview/README.txt @ b61bd57

ESS_GUIESS_GUI_DocsESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalcmagnetic_scattrelease-4.1.1release-4.1.2release-4.2.2ticket-1009ticket-1094-headlessticket-1242-2d-resolutionticket-1243ticket-1249ticket885unittest-saveload
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1Release Notes
2=============
3
41- Features
5===========
6    - New in Version 4.1.1
7      --------------------
8      This point release is a bug-fix release addressing:
9
10       - Fixes #948: Mathjax CDN is going away
11       - Fixes #938: Cannot read canSAS1D file output by SasView
12       - Fixes #960: Save project throws error if empty fit page
13       - Fixes #929: Problem deleting data in first fit page
14       - Fixes #918: Test folders not bundled with release
15       - Fixes an issue with the live discovery of plugin models
16       - Fixes an issue with the NXcanSAS data loader
17       - Updated tutorials for SasView 4.x.y
18
19      It is recommended that all users upgrade to this version
20
21    - New in Version 4.1.0
22      ------------------
23      This incremental release brings a series of new features and improvements,
24      and a host of bug fixes. Of particular note are:
25     
26      - Correlation Function Analysis (Corfunc)
27        This performs a correlation function analysis of one-dimensional SAXS/SANS data,
28        or generates a model-independent volume fraction profile from the SANS from an
29        adsorbed polymer/surfactant layer.
30
31        A correlation function may be interpreted in terms of an imaginary rod moving
32        through the structure of the material. Γ1D(R) is the probability that a rod of
33        length R moving through the material has equal electron/neutron scattering
34        length density at either end. Hence a frequently occurring spacing within a
35        structure manifests itself as a peak.
36
37        A volume fraction profile \Phi(z) describes how the density of polymer
38        segments/surfactant molecules varies with distance from an (assumed locally flat)
39        interface.
40
41      - Fitting of SESANS Data
42        Data from Spin-Echo SANS measurements can now be loaded and fitted. The data will
43        be plotted against the correct axes and models will automatically perform a Hankel
44        transform in order to calculate SESANS from a SANS model.
45
46      - Documentation
47        The documentation has undergone significant checking and updating.
48
49      - Improvements
50        - Correlation function (corfunc) analysis of 1D SAS data added from CCP13
51        - File converter tool for multi-file single column data sets
52        - SESANS data loading and direct fitting using the Hankel transformation
53        - Saving and loading of simultaneous and constrained fits now supported
54        - Save states from SasView v3.x.y now loaded using sasmodel model names
55        - Saving and loading of projects with 2D fits now supported
56        - Loading a project removes all existing data, fits, and plots
57        - Structure factor and form factor can be plotted independently
58        - OpenCL is disabled by default and can be enabled through a fit menu
59        - Data and theory fields are now independently expandable
60      - Bug Fixes
61        - Fixes #667: Models computed multiple times on parameters changes
62        - Fixes #673: Custom models override built in models of same name
63        - Fixes #678: Hard crash when running complex models on GPU
64        - Fixes $774: Old style plugin models unloadable
65        - Fixes #789: stacked disk scale doesn't match cylinder model
66        - Fixes #792: core_shell_fractal uses wrong effective radius
67        - Fixes #800: Plot range reset on plot redraws
68        - Fixes #811 and #825: 2D smearing broken
69        - Fixes #815: Integer model parameter handling
70        - Fixes #824: Cannot apply sector averaging when no detector data present
71        - Fixes #830: Cansas HDF5 reader fully compliant with NXCanSAS v1.0 format
72        - Fixes #835: Fractal model breaks with negative Q values
73        - Fixes #843: Multilayer vesicle does not define effective radius
74        - Fixes #858: Hayter MSA S(Q) returns errors
75        - Numerous grammatical and contexual errors in documention
76
77
78    - New in Version 4.0.1
79      ------------------
80      This release fixes the critical bug #750 in P(Q)*S(Q).  Most damaging
81      it appears that the background term was being added to S(Q) prior to
82      multiplication by P(Q).
83
84
85    - New in Version 4.0
86      ------------------
87      This release fixes the various bugs found during the alpha and beta testing
88      - Improvements
89        - Support for reading data files from Anton Paar Saxess instruments
90        - Adds documentation on how to write custom models in the new framework
91      - Bug Fixes
92        - Fixes bug #604 Pringle model questions
93        - Fixes bug #472 Reparameterize Teubner-Strey
94        - Fixes bug #530 Numerical instabilities in Teubner Strey model
95        - Fixes bug #658 ASCII reader very broken
96
97
98    - New in Version 4.0 beta 1
99      --------------------
100      This beta adds support for the magnetic and multilevel models of 3.1.2
101      and along with a host of bug fixes found in the alpha.
102
103      - Model package changes and improvements
104         - All 3.1.2 models now available in new interface
105         - Old custom models should now still work
106            - '''NOTE:''' These will be deprecated in a future version. Old
107            custom models should be converted to the new model format which
108            is now the same as the built in models and offers much better
109            support.
110         - Custom model editor now creates new style models
111         - Custom model editor supports better error checking
112      - Documentation improvements
113        - Continued general cleanup
114      - Other improvements/additions
115         - Support for new canSAS 2D data files added
116         - Plot axes range can now be set manually as well as by zooming
117         - Plot annotations can now be moved around after being placed on plot.
118         - The active optimizer is now listed on the top of the fit panel.
119         - Linear fits now update qmin and max when the x scale limits are
120         changed.  Also the plot range no longer resets after a fit.
121      - Bug fixes
122         - Fixes bug #511 Errors in linearized fits and clean up of interface
123         including Kratky representation
124         - Fixes bug #186 Data operation Tool now executes when something is
125         entered in the text box and does not wait for the user to hit enter
126         - Fixes bug #459 plot context menu bug
127         - Fixes bug #559 copy to clipboard in graph menu broken
128         - Fixes bug #466 cannot remove a linear fit from graph
129         - Numerous bugs introduced in the alpha
130
131
132
133    - New in Version 4.0.0-alpha
134      --------------------
135      This alpha release brings a major overhaul of the model system. The new model
136      package allows rapid integration of custom models and access to polydispersity
137      without requiring a compiler.
138
139      - Model package changes and improvements
140         - Model interface moved to independent sasmodels package.
141         - Most models converted to new interface.
142         - Allows rapid integration of user-written models.
143         - OpenCL GPU utilization for faster fitting.
144         - Improved numerical integration of Bessel functions.
145      - SESANS integration and implementation
146         - Scripting interface added for analysis of SESANS data.
147         - Hankel transformation now accepts finite acceptance angles.
148         - 2D cosine transformation added for TOF SESANS analysis.
149      - Documentation improvements
150         - The documentation tree was restructured for a better end user experience.
151         - The documentation for each model was revamped and verified by at least
152           two people following the conversion of the model.
153         - Theoretical 1D (and 2D if applicable) scattering curves are auto-generated
154           and added to the model documentation for each model.
155      - Separation of GUI and calculations for future GUI enhancements
156      - Bug fixes
157         - Fixes bug #411 No stop button on simultaneous fit page
158         - Fixes bug #410 Error with raspberry model
159         - Fixes bug #364 Possible inconsistency in Poly_GausCoil model
160         - Fixes bug #439 Hayter Penfold MSA code needs checking
161         - Fixes bug #484 lammellerPC is precision limited
162         - Fixes bug #498 $HOME/.matplotlib conflicts
163         - Fixes bug #348 Control order in which fit parameters appear in the gui
164         - Fixes bug #456 Provide DREAM Results Panel with something to identify
165           data and age of results
166         - Fixes bug #556 Build script improvements for developers
167
168
169
170   - New in Version 3.1.2
171     --------------------
172     This release is a major stability improvement, having fixed a serious bug
173     that came to light since release 3.1.1. All users should upgrade.
174
175     - Fixes bug #468 broken remove constraint buttons in
176       simultaneous/constrained fitting panel
177     - Fixes bug #474 resulting from changes in 3.1.1 that had
178       introduced an error in the high-Q of slit-smeared models.
179     - Fixes bug #478 which would cause wx to run out of IDs and result
180       in SasView crashing even if left alone.
181     - Fixes bug #479 missing help button on simultaneous/constrained fit page
182     - Fixes bug #480 GUI resizing issues on simultaneous fit page
183     - Fixes bug #486 broken Report Results
184     - Fixes bug #488 redraw issues in fit page
185
186
187
188   - New in Version 3.1.1
189     --------------------
190     - Fixes bug #457 that prevented SasView from starting if the user was not
191       connected to the internet, or was behind a proxy server.
192
193   - New in Version 3.1.0
194     --------------------
195     - The documentation/help has had a complete overhaul including:
196       - A completely new presentation interface (Sphinx).
197       - Proof reading!
198       - Updating for latest features.
199       - A Help (or sometimes ?) button has been added to every panel, and some
200         sub panels if appropriate, linking to the appropriate section in the
201         documentation.
202       - The model help has been split so that the Details button now brings up
203         a very short pop-up giving the equation being used while HELP goes to
204         the section in the full documentation describing the model.
205       - Extensive help has also been added for the new optimizer engine (see
206         below) including rules of thumb on how and when to choose a given
207         optimizer and what the parameters do.
208     - The optimizer engine has been completely replaced. The new optimizer
209       still defaults to the standard Levenberg-Marquardt algorithm. However 4
210       other optimizers are now also available. Each starts with a set of default
211       parameters which can be tuned. The DREAM optimizer takes the longest but
212       is the most powerful and yields rich information including full parameter
213       correlation and uncertainty plots. A results panel has been added to
214       accommodate this.
215       - The five new optimizers are:
216         - A Levenberg-Marquardt optimizer
217         - A Quasi-Newton BFGS optimizer
218         - A Nelder-Mead Simplex optimizer
219         - A Differential Evolution optimizer
220         - A Monte Carlo optimizer (DREAM)
221     - New models were added:
222         - MicelleSphCoreModel (currently residing in the Uncategorized category)
223     - Existing models were updated:
224         - LamellarPS (bug in polydispersity integration fixed)
225         - RectangularPrismModel
226         - RectangularHollowPrismModel
227         - RectangularHollowPrismInfThinWallsModel
228     - Infrastructure to allow SESANS data to be fit with models was added. This
229       will become available in a future release but can currently be used from
230       the command line with some caveats.
231     - A number of bugs were fixed including a thread crashing issue and an
232       incorrect slit smearing resolution calculation.
233     - Implemented much more robust error logging to enable much easier
234       debugging in general but particularly the debugging of issues reported by
235       SasView users.
236     - A number of infrastructure tasks under the hood to enhance maintainability
237     - Upgrade from Wx 2.8 to Wx 3.0.2 which allows several new features but
238       required significant additional rework as well.
239     - Fully implemented Sphinx to the build process to produce both better
240       user documentation and developer documentation.
241     - Restructuring of the code base to more unified nomenclature and structure
242       so that the source installation tree more closely matches the installer
243       version tree.
244     - Code cleanup (an ongoing task) .
245     - Migration of the repository to github simplifying contributions from
246       non-project personnel through pull requests.
247
248   - New in Version 3.0.0
249     --------------------
250     - The GUI look and feel has been refactored to be more familiar for
251       Windows users by using MDI frames. Graph windows are also now free-
252       floating.
253     - Five new models have been added: PringlesModel, CoreShellEllipsoidXTModel,
254       RectangularPrismModel, RectangularHollowPrismModel and
255       RectangularHollowPrismInfThinWallsModel.
256     - The data loader now supports ILL DAT data files and reads the full meta
257       information from canSAS file formats.
258     - Redefined convention for specifying angular parameters for anisotropic
259       models.
260     - A number of minor features have been added such as permitting a log
261       distribution of points when using a model to simulate data, and the
262       addition of a Kratky plot option to the linear plots.
263     - A number of bugs have also been fixed.
264     - Save Project and Save Analysis now work more reliably.
265     - BETA: Magnetic contrast supporting full polarization analysis has been
266       implemented for some spherical and cylindrical models.
267     - BETA: Two new tools have been added:
268       - A generic scattering calculator which takes an atomic, magnetic or
269         SLD distribution in space and generates the appropriate 2D
270         scattering pattern. In some cases the orientationally averaged
271         (powder) 1D scattering can also be computed. Supported formats
272         include: SLD or text, PDB, and OMF magnetic moment distribution
273         file.
274       - An image viewer/converter for data in image format; this reads in
275         an image file and will attempt to convert the image pixels to
276         data. Supported formats include: TIFF, TIF, PNG, BMP, JPG.
277
278   - New in Version 2.2.1
279     --------------------
280     - Minor patch to support CanSAS XML v1.1 file format
281     - Added DataInfo for data in the DataExplorer and plots
282     - Added Maximize/Restore button in the title bar of the graphs
283     - Added a hide button in the toolbar of the graph panel
284     - The 'x' button now deletes a graph
285     - Edit SUM Model from the menubar can now generate and save more than one sum model
286     - Reports can now be saved in pdf format on WIN and MAC
287     - Made significant improvements to the batch/grid panel and fixed several bugs
288     - Fixed a number of other minor bugs
289
290   - New in Version 2.2.0
291     --------------------
292     - Application name changed to SasView
293     - New fully customizable Category Manager added for better management of
294       increasing number of models
295     - Improved the Grid Window functionality in the batch fitting mode
296     - Added a simpler Graph/Plot modification interface
297     - Added a new 'Data Operation' tool for addition, subtraction, multiplication,
298       division, of two data sets.
299     - The 'Sum Model' editor was extended and renamed 'Summation and Multiplication'
300       editor
301     - Added more plot symbols options for 1d plots
302     - Added improved trapping of compiling errors to the 'New model editor'
303     - Added some intelligent outputs (e.g., Rg, background, or rod diameter
304       depending on the choice of axis scale of the plot) to the linear fits
305     - Added more models
306
307   - Feature set from previous versions
308     -----------------------------------
309     - Perspectives Available
310       - Invariant calculator: Calculates the invariant, volume fraction, and
311         specific surface area.
312       - P(r) inversion calculator: Indirect Fourier transformation method.
313       - Fitting: the tool used for modeling and fitting 1D and 2D data to
314         analytical model functions
315       - Tools: provides a number of useful supplementary tools such as SLD
316         calculation
317
318     - Fitting
319       - Includes a large number of model functions, both form factors and structure factors.
320       - Support P(Q)*S(Q) for form factors that flag they can be so multiplied.
321       - Supports Gaussian, lognormal, Shulz, rectangular and custom distribution
322         functions for models that need to include polydispersity or for orientational
323         distributions if appropriate.
324       - Anisotropic shapes and magnetic moment modeling in 2D allow for a non-uniform
325         distribution of orientations of a given axis leading to modeling and fitting
326         capabilities of non azimuthaly symmetric data.
327       - User can choose to weight fits or not. If using weights, the user can choose
328         the error bar on each point if provided in the file, the square root
329         of the intensity or the intensity itself.
330       - Instrumental resolution smearing of model or fits is provided with several
331         options: read the resolution/point fromt he file. Input a pinhole resolution
332         or a slit resolution.
333       - Users can define the Qrange (Qmin and Qmax) for both 1D and 2D data for
334         fitting and modeling, but not graphically.  The range can be reset to the
335         defaults (limits of q in data set for a fit) with the reset button.
336       - A mask can be applied to 2D calculation and fitting.
337       - Normalized residual plots are provided with every fit.
338       - Model function help available through detail button or from the fitting panel.
339       - Simultaneous/(advanced)constrained fitting allows for fitting a single
340         data set or several different sets simultaneously with the application
341         of advanced constraints relating fit parameters to functions of other
342         parameters (including from a different set). For example thickness of
343         shell = sin(30) times the length.
344       - Models that are the sum of two other models can be easily generated through the
345         SUM Model menubar item.
346       - New Python models can be added on the fly by creating an appropriate Python
347         file in the model plugin directory. Two tools are provided to help:
348         An easy to use custom model editor allows the quick generation of new Python
349         models by supplying only the parameters and their default value (box 1)
350         and the mathematical function of the model (box 2) and generating the
351         necessary *.py file.  A separate advanced model editor provides a full Python
352         file editor.  Either way once saved the model becomes immediately available
353         to the application.
354       - A batch fitting capability allows for the analysis of a series of data sets to
355         a single model and provides the results in a tabular form suitable for saving
356         or plotting the evolution of the fit parameters with error bars (from within
357         the application).
358
359     - Tools
360       - A scattering length density calculator,including some X-ray information
361         is provided.
362       - A density to vol. fraction converter is provided
363       - In application access to a Python shell/editor (PyCrust) is provided
364       - An instrument resolution calculator, including possible gravitational and
365         TOF effects is provided
366       - A slit size calculator optimized for Anton Paar Saxess is provided.
367       - A kiessig fringe thickness calculator is provided
368
369     - Plots and plot management
370       - A 3D graphing option (for 2d data/results) is provided with the view
371         controlled by the mouse
372       - 2D plots are shown with an intensity color bar. 2D Color map can be user
373         adjusted.
374       - Supports output of plot to a variety of graphic formats. Supported formats
375         include: png, eps, emf, jpg/jpeg, pdf, ps, tif/tiff, rawRGBbitmap(raw, rgba),
376         and scalable vector graphic (svg/svgz)
377       - Supports ouput of data in plot (1 or 2D) to limited data formats
378       - Multiple data sets can be loaded into a single graph for viewing (but a fit
379         plot can currently only have a single plot).
380       - Extensive context sensitive plot/fitting/manipulation options are available
381         through a right mouse click pop-up menu on plots.
382
383     - Data management
384       - Supports 2 + column 1D ASCII data, NIST 1D and 2D data, and canSAS data
385         via plug-in mechanism which can easily allow other readers as appropriate.
386       - 2D data is expected in Q space but for historical reasons accepts the
387         NIST 2D raw pixel format and will do conversion internally.
388       - The full data and metadata available to SasView is viewable in ASCII via
389         right clicking on a data set and choosing Data Info in the DataExplorer
390         or on the plots
391       - Supports loading a single file, multiple files, or a whole folder
392       - An optional Data Explorer is provided (default) which simplifies managing,
393         plotting, deleting, or setup for computation. Most functions however do
394         not require access to the explorer/manager and can be accessed through
395         right click menus and the toolbar.  The data explorer can be re-started
396         from the menu bar.
397
398     - Data manipulation
399       - Support various 2D averaging methods : Circular, sectors, annular,
400         boxsum, boxQx and boxQy.
401       - A 2D data maks editor is provided
402       - 2D mask can be applied to the circular averaging.
403
404     - Miscellaneous features
405       - limited reports can be generated in pdf format
406       - Provides multiprocessor support(Windows only)
407       - Limited startup customization currently includes default startup
408         data folder and choice of default starting with data manager
409       - Limited support for saving(opening) a SasView project or a SasView analysis
410         (subproject) is provided.
411       - SasView can be launched and loaded with a file of interesty by double-clicking
412         on that file (recognized extension)
413       - A data file or data folder can be passed to SasView when launched from
414         the command line.
415       - Limited bookmarking capability to later recall the results of a fit calculation
416         is provided.
417       - Extensive help is provided through context sensitive mouse roll-over,
418         information bar (at the bottom of the panel), the console menu, and
419         access to the help files in several different ways.
420
421
4222- Downloading and Installing
423=============================
424
425   *** Note 1:  Much more information is available at www.sasview.org under links.
426                    Look in the 'For Developers' section and particularly the wiki at
427                www.sasview.org/trac/wiki.
428   *** Note 2:  If you have EXE or ZIP SasView installer, you won't need any of
429                the following.  However it is highly recommended that any
430                previous versions be un-installed prior to installing the
431                new version.
432
433   2.1- System Requirements
434        - Python version >= 2.5 and < 3.0 should be running on the system
435        - We currently use Python 2.7
436
437   2.2- Installing from source
438        - Get the source code
439          - to follow the current development version from source control use
440              git clone https://github.com/SasView/sasview.git
441              git clone https://github.com/bumps/bumps.git
442          - to install a specific version
443
444        - Build, install and run a specific release
445          - make sure the requirements below are already installed
446          - retrieve the source from https://github.com/SasView/sasview/releases
447          - open a command line window in the 'sasview-x.x.x' directory
448          - run 'python setup.py install'
449          - run 'python sasview.py' under the 'sasview' folder.
450
451        - Build, install and run the current development version
452          - clone the source from git; also clone bumps, which is developed in parallel
453              git clone https://github.com/SasView/sasview.git
454              git clone https://github.com/bumps/bumps.git
455          - open a command line window in the 'sasview' directory
456          - run 'python setup.py build'
457          - run 'python run.py'; this runs from the source directories, so you
458            don't have to rebuild every time you make a change, unless you are
459            changing the C++ model files
460
461        - The following modules are required (version numbers are what are used
462          in the windows release build):
463
464          - Common Packages
465            - reportlab 3.1.44
466            - lxml 3.4.4.0 (MAC 3.4.2.0)
467            - PIL 1.1.7
468            - xhtml2pdf 3.0.33 (MAC = not installed on build server)
469            - unittest-xml-reporting 1.12.0 (MAC 1.10.0)
470            - matplotlib Version Installed: 1.4.3 (MAC 1.1.1)
471            - bumps Version Installed: 0.7.5.9
472            - scipy Version Installed: 0.16.0b2 (MAC 0.11.0)
473            - periodictable Version Installed: 1.4.1
474            - setuptools Version Installed: 7.0 (MAC 12.0.5)
475            - sphinx Version Installed: 1.3.1 (MAC 1.3b2)
476            - pyparsing Version Installed: 2.0.3
477            - numpy Version Installed: 1.9.2 (MAC 1.6.2)
478            - html5lib Version Installed: 0.99999
479            - wx Version Installed: 3.0.2.0
480
481          - Windows Specific Packages
482            - pywin 219
483            - py2exe 0.6.9
484            - comtypes 1.1.1
485            - MinGW w/ gcc version 4.6.1 (WIN)
486            - vcredist_x86.exe (version 9.0.21022.8  -microsoft visual C 2008
487              re-distributable)
488            - Innosetup (WIN - isetup 5.4.2-unicode) - used to create distributable
489
490            *** Note: Windows build dependencies can be set up using anaconda. Instructions
491                can be found at http://trac.sasview.org/wiki/AnacondaSetup
492
493          - MAC Specifc Packages
494            - py2app 0.7.1
495
496
4973- Known Issues
498===============
499
500
501   4.1- All systems:
502      The conversion to sasmodels infrastructure is ongoing and should be
503      completed in the next release. In the meantime this leads to a few known
504      issues:
505        - The way that orientation is defined is being refactored to address
506        long standing issues and comments.  In release 4.1 however only models
507        with symmetry (e.g. a=b) have been converted to the new definitions.
508        The rest (a <> b <> c - e.g. parellelepiped) maintain the same
509        definition as before and will be converted in 4.2.  Note that
510        orientational distribution also makes much more sense in the new
511        framework.  The documentation should indicate which definition is being
512        used for a given model.
513        - The infrastructure currently handles internal conversion of old style
514        models so that user created models in previous versions should continue
515        to work for now. At some point in the future such support will go away.
516        Everyone is encouraged to convert to the new structure which should be
517        relatively straight forward and provides a number of benefits.
518        - In that vein, the distributed models and those generated by the new
519        plugin model editor are in the new format, however those generated by
520        sum|multiply models are the old style sum|multiply models. This should
521        also disappear in the near future
522        - The on the fly discovery of plugin models and changes thereto behave
523        inconsistently.  If a change to a plugin model does not seem to
524        register, the Load Plugin Models (under fitting -> Plugin Model
525        Operations) can be used.  However, after calling Load Plugin Models, the
526        active plugin will no longer be loaded (even though the GUI looks like
527        it is) unless it is a sum|multiply model which works properly.  All
528        others will need to be recalled from the model dropdown menu to reload
529        the model into the calculation engine.  While it might be annoying it
530        does not appear to prevent SasView from working..
531        - The model code and documentation review is ongoing. At this time the
532        core shell parellelepiped is known to have the C shell effectively fixed
533        at 0 (noted in documentation) while the triaxial ellipsoid does not seem
534        to reproduce the limit of the oblate or prolate ellipsoid. If errors are
535        found and corrected, corrected versions will be uploaded to the
536        marketplace.
537   
538   3.1- All systems:
539        - The documentation window may take a few seconds to load the first time
540          it is called. Also, an internet connection is required before
541          equations will render properly. Until then they will show in their
542          original TeX format.
543        - If the documentation window remains stubbornly blank, try installing a
544          different browser and set that as your default browser. Issues have
545          been noted with Internet Explorer 11.
546        - Check for Updates may fail (with the status bar message ' Cannot
547          connect to the application server') if your internet connection uses
548          a proxy server. Tested resolutions for this are described on the
549          website FAQ.
550        - The copy and paste functions (^C, ^V) in the batch mode results grid
551          require two clicks: one to select the cell and a second to select the
552          contents of the cell.
553        - The tutorial has not yet been updated and is somewhat out of date
554        - Very old computers may struggle to run the 3.x and later releases
555        - Polydispersity on multiple parameters included in a simultaneous/
556          constrained fit will likely not be correct
557        - Constrained/simultaneous fit page does not have a stop button
558        - Constrained/simultaneous fit do not accept min/max limits
559        - Save project does not store the state of all the windows
560        - Loading projects can be very slow
561        - Save Project only works once a data set has been associated with
562          a model.  Error is reported on status bar.
563        - There is a numerical precision problem with the multishell model when
564          the iner radius gets large enough (ticket #288)
565        - The angular distribution angles are not clearly defined and may in
566          some cases lead to incorrect calculations(ticket #332)
567
568   3.2- Windows:
569        - If installed to same directory as old version without first removing
570          the old version, the old desktop icon will remain but point to the
571          new exe version. Likewise all the start menu folders and items will
572          have the old name even though pointing to the new version.  Usually
573          safest to uninstall old version prior to installing new version anyway.
574
575   3.3- MAC:
576        - Application normally starts up hidden. Click icon in Dock to view/use
577          application.
578        - Multiprocessing does not currently work on MAC OS
579
580   3.4- Linux:
581        - Not well tested
582
583
5844- SasView website
585==================
586
587   - www.sasview.org.  This main project site is the gateway to all
588     information about the sasview project.  It includes information
589     about the project, a FAQ page and links to all developer and user
590     information, tools and resources.
591
592
5935- Frequently Asked Questions
594=============================
595
596   - www.sasview.org/faq.html
597
598
5996- Installer download website
600=============================
601
602   - Latest release Version
603     - https://github.com/SasView/sasview/releases
604   - Latest developer builds
605     - https://jenkins.esss.dk/sasview/view/Master-Builds/
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