File: NEWS

package info (click to toggle)
fityk 1.3.1-6
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye, sid
  • size: 3,784 kB
  • sloc: cpp: 34,396; ansic: 4,673; python: 971; makefile: 366; sh: 117; java: 31; ruby: 27; perl: 25; xml: 16
file content (498 lines) | stat: -rw-r--r-- 24,805 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
User-visible changes in version 1.3.1  (2016-12-21):
* GUI: more options in the peak-top menu
* GUI: Tools > XPS KE <-> BE
* added utilities F.findx(), F.extremum(), centile(N, expr), %peak.IB
* bug fixes, as always

User-visible changes in version 1.3.0  (2015-05-25):
* support filenames with non-ascii characters
* simple-variable ~NUM can be followed by domain, e.g.: %f=Linear(~3[2:5], ~8)
  and also default parameters can have domain (...shape=~0.5 [0:1],...),
  Voigt and PseudoVoigt have now shape with default domain [0:1]
* if variable has a domain (example: $a = ~1.2 [-3:4]) then
   "$a = ~3" keeps domain of $a (also "a={$a}; $a=~{a}" preserves domain)
   "$a = ~3 [:]" unsets domain
   "$a = copy($x) - copy $x with domain
* new boolean box_constraints option decides if domains are used as box
  constraints in fitting methods that support it (default: on)
* GUI: added auto-completion to Lua script editor
* xyConvert is now part of xylib (removed flag --disable-xyconvert)
* command "reset" does not reset Lua VM (to allow "reset" from Lua scripts)
* Lua: add Python-style formatting (e.g."%d pigs" % 3) using __mod for strings

User-visible changes in version 1.2.9  (2014-04-13):
* fitting:
  - a few optimization methods from the NLopt library have been added
  - MPFIT and NLopt methods support box constraints
  - simplifications that made using external libraries easier:
    - removed stopping criterium based on iterations. The max. number of
      WSSR evaluations can be used instead.
    - removed fit continuation (fit +N)
* new function Sigmoid and new category of functions (S-shaped/step/sigmoidal)
* GUI: added menu Session > Recent Scripts
* GUI: added checkbox to Functions > Export Peak Parameters
* GUI: added "decimal comma" option to Data > Load dialogs.

User-visible changes in version 1.2.1  (2012-11-05):
* added commands '=' and 'exec=' - shorthands 'lua return' and 'lua F:execute'
* API: default dataset in a few functions changed from @0 to the currently used
* GUI: new dialog GUI > Configure > Default Directories
* a few tweaks and fixes related to printing, and other bug fixes

User-visible changes in version 1.2.0  (2012-05-24):
* added fitting method "mpfit" -- wrapper around MINPACK-1 based MPFIT library
  (http://www.physics.wisc.edu/~craigm/idl/cmpfit.html)
* changed public API of libfityk; now cfityk uses only public API
* added C API and Ruby and Java bindings to libfityk
* enhanced Python API and added Python equivalent of cfityk (samples/cfityk.py)
* CLI: cfityk can be built with libedit (but it works better with readline)
* in scripts, backslash (\) at the end of line means line continuation
* bug fixes, as usually

User-visible changes in version 1.1.1  (2011-09-28):
* option exit_on_warning=0/1 was replaced with on_error=stop/exit; new option
  on_error=nothing allows to ignore errors in script.
* current working directory can be changed using new option `cwd'
* GUI: a new dialog for Model > Export Formula
* minor bug fixes

User-visible changes in version 1.1.0  (2011-07-18):
* embedded Lua (lightweight programming language)
* syntax changes and enhancements in dataset transformations (@n = ...);
  example: "@0 = @0 - 0.23 * @1" removes (background) @1 with y's scaled
  by factor 0.23 from dataset @0; if @0 and @1 have different x's, linear
  interpolation is used.
* added calculation of Polyline derivatives, what enables weighted least
  squares approximation by broken lines
* gzipped fit files can be read directly (extension .fit.gz or .fityk.gz)
* new option max_fitting_time -- stopping criterium based on elapsed time
* GUI: mouse wheel and mouse extra buttons can be used to zoom in/out
* Mac GUI: added Session > New Window that opens new window (open -n Fityk.app)
* GUI: added optional, configurable description in the corner of the main plot
* GUI: Session > Copy to Clipboard works differently and on all platforms now
* GUI: enhanced file dialogs: Data > Quick Load and Session > Save as Image
* fixed all reported bugs

User-visible changes in version 1.0.2  (2011-06-08):
* changed Data > Load File dialog
* fixed a few minor problems and a major one (GUI not working on OSX 10.5)

User-visible changes in version 1.0.1  (2011-03-30):
* corrected calculation of Exponentially Modified Gaussian
* added calculation of confidence intervals
* GUI: anti-aliasing (can be switched off in menu GUI > Anti-aliasing)
* added (experimental) option guess_uses_weights that changes peak "guessing"
* as usually, a few bug fixes and minor changes in the GUI

User-visible changes in version 1.0.0  (2011-03-18):
* fixed bugs: several bugs in the powder diffraction add-on,
  problem with negative simple-variables, crash when the status bar has an
  extra value set
* GUI: several changes necessary to make the program working on OSX (>= 10.4)
* GUI: new configuration dialogs for plots
* GUI: all configs including the default one are now stored in .fityk/configs/
* samples are always installed, removed configure option --with-samples,
  added menu Help > Examples in the GUI
* requires wxWidgets >= 2.9.1

User-visible changes in version 0.9.8  (2011-06-08):
* several bug fixes ported from version 1.0.2
  (unlike 1.x, this version can be built with wxWidgets 2.8)

User-visible changes in version 0.9.7  (2011-02-08):
* bug fixes: UDFs (user-defined functions) did not work in ver. 0.9.5-6,
  a few fixes in the powder diffraction add-on and in other places
* data operations: added aggregate functions argmin, argmax and count
* GUI: redesigned the Data > Export dialog

User-visible changes in version 0.9.6  (2011-01-26):
* fixed three bugs, one of them was sometimes crashing the program at startup

User-visible changes in version 0.9.5  (2011-01-24):
* libfityk: the parser has been completely rewritten and the syntax was
  slightly changed:
  - major changes in the `info' command; two new commands, `print' and `debug', 
    partially took over some functionality of the old `info'
  - "commands" replaced by "set"/"exec"
  - "dump" replaced by "info state"
  - values of the fitting_method setting changed to lower case
  - "set @0.title = ..." replaced with "@0: title = ..."
  - settings: removed formula_export_style, guess_at_center_pm and
    can_cancel_guess, changed autoplot and verbosity,
    added logfile, log_full, fit_replot,
    info_numeric_format renamed to numeric_format, data_default_sigma to
    default_sigma, cut_function_level to function_cutoff,
    variable_domain_percent to domain_percent
  - in "define ... where param=expr" expr is substituted in brackets now
  - added syntax: delete file 'filename'
  - "guess": changed argument order
  - F.param = $variable   ->   F[*].param = $variable
  See the wiki for details (there is a tool that upgrades fityk scripts).
* new website address (fityk.nieto.pl) and new code repository (GitHub)
* GUI: simplified two dialogs: Edit Script and Definition Manager
* error in script stops the script

User-visible changes in version 0.9.4  (2010-10-09):
* removed syntax `delete[range]', use `delete(condition)' instead
* syntax `y[x=15]' replaced with `y[index(15)]'
* removed data range syntax, e.g. X[3...10]=15. It can be replaced
  with X = n >= 3 and n < 10 ? 15 : x
* removed syntax "order="
* removed syntax "commands < file[m:n]", only the whole file can be executed
* modulo syntax changed from a%b to mod(a,b)
* syntax: '-' replaced with '_' in settings and 'info fit_history'
* syntax: 'fit history clear' replaced with 'fit clear_history'
* added Perl bindings (manual compilation: cd swig/ && make perl)
* GUI: remember recently subtracted baselines (GUI > Baseline Mode > Recent)
* bug fixes

User-visible changes in version 0.9.3  (2010-06-24):
* changed implementation of gamma and related functions (using boost.math now)
* syntax: so-called parametrized-functions spline[] and interpolate[]
  are replaced by so-called variadic functions Spline() and Polyline().
  The GUI in the Baseline Mode handles a separate baseline for each dataset now.
* abandoned syntax like 5<x<10, use 5<x and x<10
* syntax: '*' wildcard can be used when deleting functions and variables
* GUI: changed numeric format in a few place (eg. coordinates on the status bar)
* GUI: added Functions > Auto-Freeze option that automatically locks/unlocks
  parameters of a peak when a data range containing the center of this peak 
  is disactivated/activated
* GUI: added option GUI > Zoom All Shows Y=0
* required Boost version (only in the compilation time) is now >= 1.36

User-visible changes in version 0.9.2  (2010-05-07):
* To compile fityk, Boost (only headers) and xylib must be installed first.
  Fityk tarball does not contain a copy of boost and xylib now.
* user-defined functions: split functions can be defined in this way:
  SplitG(h, c, w1, w2) = x < c ? Gaussian(h, c, w1) : Gaussian(h, c, w2)
* added info-numeric-format option
* a couple of bug fixes

User-visible changes in version 0.9.1  (2010-03-25):
* added cfityk to Windows installer
* Unix only: fitting can be interrupted by the INT signal
* changed output of "info errors", see the manual for details
* GUI: "plot in @n" changes selected datasets (useful in scripts)
* many bugs fixed

User-visible changes in version 0.9.0  (2010-01-05):
* GUI: Data > Editor dialog was replaced with two dialogs: Data > Table
  and Data > Edit Transformations
* added Lua bindings (configure option --enable-lua)
* a syntax to execute output from external program: command ! program [args...]
* xyConvert (which requires wx 2.9) is built by default.
  Added flag --disable-xyconvert, which must be used with wx 2.8.
* parsing of info command was rewritten, but functionality is almost the same
* bug fixes

User-visible changes in version 0.8.9  (2009-08-20):
* manual was converted from DocBook to reStructuredText
* GUI: On Linux fitting was very slow, this was fixed. A new option
  `refresh-period` was added to control refreshing during fitting.
* define supports variable substitution with "define ... where ...", e.g. 
   define Foo(alpha) = alpha * eta * (eta / tanh(eta) - ln (2*sinh(eta))) \
   where eta = 2*pi/alpha * sin(theta/2), theta=x*pi/180
* added access to symmetric errors from scripts (e.g. $variable.error 
  or %func.height.error)
* category "Education" was added to fityk.desktop

User-visible changes in version 0.8.8  (2009-06-21):
* added two flags to the configure script: --with-xylib and --with-samples
  (xylib from the fityk tarball is not used by default now)

User-visible changes in version 0.8.7  (2009-06-10):
* fityk license was changed from GPLv2 to GPLv2+ (2 or at your option any later)
* all config files are stored in a single directory:
       Unix: ~/.fityk
    Windows: C:\Documents and Settings\username\Application Data\fityk
        Mac: ~/Library/Application Support/fityk
  This changes the path to the default and alt. configs on Windows and Mac.
* now works also with GCC 4.4 and Boost 1.35
* minimum wxWidgets version increased to 2.8.0
* added functions LogNormal and LogNormalA (Mirko Scholz)
* abs() can be used in user-defined functions
* added syntax for loading data from all columns in file: file.csv:1:2..::
* bug fixes, most notably bugs with saving/loading session

User-visible changes in version 0.8.6  (2008-04-15):
* bug fixes (drawing baseline, "zoom all" with log scale)
* GUI: parameters (at the bottom of the sidebar) can be changed with Page-Up
  and Page-Down keys or with mouse wheel. Shift, Ctrl, Alt keys modify speed.
* GUI: two buttons added to the "functions" pane in the sidebar. They make 
  HWHM and shape equal for all functions (works only with a few function types)

User-visible changes in version 0.8.5  (2008-03-17):
* minor changes in syntax: 
    info @0             ->   info data in @0
    info @0.title       ->   info title in @0
    info @0.filename    ->   info filename in @0
    @0.title = abc      ->   set @0.title = abc
    @+                  ->   @+ = 0
    @0.revert           ->   @0 < .
   data is exported with "info" now: info @n ( expr1, ... ) > filename
     where: columns have to be given, @* can be used, F() and Z() can 
            be used without "@n." prefix,  *F() can not be used.
* xylib: RIET7/LHPM/CSRIET/ILL_D1A5/PSI_DMC .dat filetypes added
* non-Windows platforms: using HTML manual (in default browser) instead of HTB
* GUI: command line history is stored in ~/.fityk/history
* --disable-3rdparty configure flag prevents building with xylib from 3rdparty/
* GUI: added Session -> Save as Image
* !foo: executes a command foo by calling system() (from stdlib.h)
* bug fixes (there are some bug fixes in every release)
* xyConvert tool (can be built only with wxWidgets >= 2.9)

User-visible changes in version 0.8.4  (2008-02-15):
* xylib: pdCIF format was added

User-visible changes in version 0.8.3  (2008-01-25):
* data import is done using (modified) xylib library. 
  VAMAS and a few other new file formats are supported.
* added hyperbolic functions
* command "@n.revert" reloads data points from file
* GUI: menu item "Apply to all datasets" was removed. Now all data-related
  menu items and buttons are applied to datasets selected at the sidebar
* GUI: new dataset is opened in a new slot now (it was replacing an active 
  dataset before)

User-visible changes in version 0.8.2  (2007-08-21):
* multiple fixes for MacOSX, added macosx/ directory (Ken McIvor)
* reading multiple y columns from data file: "@+ < foo.xy:0,5/6/7" (or :0,5-7)
* "Tip of the day" removed (tips.txt deleted). 
* added SVG icon (fityk.svg) and MIME type info (fityk.xml) 
* removed files AUTHORS and ChangeLog
* the API is now a Fityk class
* GUI: setting baseline as convex hull of data points (experimental)
* XPS Shirley background removing
* minor improvements and bug fixes (e.g. "reset" was not working in 0.8.1)

User-visible changes in version 0.8.1  (2007-04-23):
* extended version info can be shown by "info+ version"
* displaying Gaussian-FWHM and Lorentzian-FWHM of Voigt function
* GUI, MS Windows: configuration is now stored in files, not in registry
* GUI: support for any numbers of config files. 
* changes in command-line parameters
* "_EXECUTED_SCRIPT_DIR_/" in scripts is replaced with the script directory
* GUI: logarithmic x scale and reversed y scale 
* bug fixes

User-visible changes in version 0.8.0  (2007-03-19):
* libfityk (fityk library) if introduced. About half of the fityk source code 
  goes into the library; the rest is GUI and CLI.
  The library has minimal public well-documented C++ API.
* experimental(!) python bindings to the library are prepared using SWIG
* bug fixes, of course

User-visible changes in version 0.7.8  (2007-03-02):
* syntax changed for dataset sum (was: @+ < @0 + @1; is: @+ = @0 + @1)
* introduced dataset operations sum_same_x and avg_same_x, 
  eg. "@+ = sum_same_x @0 + @1" (in GUI: Data > Merge points)
* command "info version"
* changed options to "set verbosity"
* GUI: error bars for data
* voigt(x,y) function for data transformations and variable definitions
* new option in settings "epsilon" used for floating point comparision.
* GUI: script debugger dialog was finished; "Edit init file" was added to menu
* option data-default-sigma with possible values: one, sqrt.
* plot command: dataset can be specified using "in @n" or "in @*", 
  default view may not contain y=0, if it's far enough from data points
* corrected calculation of covariance matrix (new C_ij = old C_ij / 2)
* several bug fixes (most of them reported by Wolfgang Christen)


User-visible changes in version 0.7.7  (2007-01-08):
* fixed GCC 4.1 compilation problem 
* GUI: plot buffering (as a bitmap); disabling menu, toolbar, etc. when fitting
* new option guess-at-center-pm (float), used by "guess Type center=$variable"
* ascii data loading: column number of 0 generates a number increasing 
  with each point
* parameters history ("fit undo", "fit redo", and related commands)
* syntax changes: "%a[hwhm]" replaced with "%a.hwhm" 
                  "@n.F[hwhm]" replaced with "@n.F.hwhm"
                  "%f -> F" replaced with "F += %f"
		  "%f -> N" replaced with "F -= %f"
                  the dataset can be specified in data expression: {y[0] in @1}
                  @0.F[3] means 4th function in @0.F (the same with Z)


User-visible changes in version 0.7.6  (2006-09-15):
* changes to the manual sent by Michael Richardson
* erf and erfc functions can be used in data transformations and UDFs
* command "dump" works now
* changed syntax for exporing function parameters and formulae
  (info peaks in @0 > filename; info formula in @0 > filename) 
* guess command supports now not only "peaks", but also "linear" functions
* GUI: improved peak dragging, full-screen mode (F11), configurable status bar,
  minor tics on plot axes, function parameters can be locked (frozen) using
  buttons at sidebar, improved "Data->Load File (custom)" dialog
* a bunch of other improvements, bugs fixes and optimizations

User-visible changes in version 0.7.5  (2006-07-31):
* GUI: Definition Manager dialog
* user defined functions (UDF) 
* GUI: gradient dialog for changing color of many datasets at once
* GUI: new Fit->Run dialog
* So-called domain of simple-variables can be specified ($a = ~3.5 [3 +- 2]),
  it is used only for randomization of the variable by some fitting methods.
* "info" can be redirected to file using "info ... > filename" syntax 
   to truncate the file and "info ... >> file" to appends to the file
* variables with names starting with "_" are auto-deleted when not used
* parameters of Lev-Mar methods can be changed (it was disabled in 0.7.0)
* GUI: pressing Shift in data range mode allows (dis)activate data in rectangle
* r-squared shown in "info fit" output (Emmanuel Lamprecht)
* a few bug fixes

User-visible changes in version 0.7.4  (2006-05-31):
* improved data and sum export
* GUI: optional grid in main plot (see axes configuration dialog) 
* defined function types can be undefined using "undefine Function" syntax
* with option=value[, option2=value2 ...] command ...
  sets value of options for this command only
* GUI: if cut-function-level is set, function limits are shown when cursor 
  is over peak top
* aggregate functions in data expressions: min, max, sum, avg, stddev, darea 
  eg. min(y if 20<x<25)
* "commands[n:m]" replaced with "info commands[n:m]"
* GUI: option "reverse" in auxiliary plot 
* GUI: background removing can be undone (like in version 0.4)
* gamma function for data transformations and variables.
* built-in area-based Pearson VII function.

User-visible changes in version 0.7.3  (2006-04-11):
* extended data transformations: numarea(%f, x1, x2, n) gives area integrated
  numerically (from x1 to x2, n steps), Y = y-%f(x) substracts function from
  data, findx(%f, x1, x2, y) finds x in (x1, x2) such that %f(x)=y,
  extremum(%f, x1, x2) finds x in (x1, x2) such that %f'(x)=0,
  transformations can be joined with ',' (previously '&' was used),
  randuniform(a, b), randnormal(mu, sigma) generate random numbers,
  y[x=21] gives y at x=21 using linear interpolation between two points
* user defined functions derived from other functions, eg:
   define Ga(area,center,hwhm) = Gaussian(area/fwhm/sqrt(pi*ln(2)),center,hwhm)
* optional logarithmic scaling of y axis
* bug fixes (Debian Bug #360795 and others) 

User-visible changes in version 0.7.2  (2006-03-08):
* area-based Voigt function (VoigtA)
* GUI, MS Windows only, Session > "Copy to Clipboard" copies plots to clipboard
* added fityk.desktop file for Linux desktop integration (Niklas Volbers)
* GUI: "directories" tab in settings dialog 

User-visible changes in version 0.7.1  (2006-02-23):
* new functions: EMG (exponentially modified gauss) and Doniach-Sunjic
* GUI: fixes and improvements in printing
* GUI: new aux. plot type: cumulative chi2 
* minor bug fixes

User-visible changes in version 0.7.0  (2006-02-08):
* program can be compiled with unicode-enabled wxWidgets
* GUI: more configurable axes (eg. a reversed x axis option)
  and peak labels (eg. horizontal/vertical labels)

User-visible changes in version 0.7.0pre1  (2006-01-23):
* ###########################################################################
  #                      completely changed syntax                          #
  ###########################################################################
* GUI: dataset/function/variable lists at right-hand panel
* new built-in functions: split-Gaussian (a.k.a Bifurcated Gaussian) and others
* there where many other changes not listed here. More then half of the
  code was either written from scratch or refactored.
* some features available in previous version are temporarily disabled,
  most notably:  
     powder diffraction part - c.xxx commands
     parameters history

User-visible changes in version 0.5.1 (2005-07-21):
* new toolbar icons 
* data tranformations: treat "3 < x < 4" like "3 < x and x < 4"
* GUI data viewer - "Fit Zoom" button 


User-visible changes in version 0.5.0 (2005-06-09):
* d.load -- possibility of loading of only selected points from file 
            was removed (it can be done with d.tranform after loading)
            new option: adding data points from file to currently loaded data 
* d.transform  --  new quite powerful command for transforming data, 
  Commands d.deviation, d.range, d.background, d.calibrate, d.set were removed.
  Handling of background (and calibration) is now a little different.
* added Data Editor dialog and Data->Fast DT menu. 

User-visible changes in version 0.4.4 (2005-03-04):

* fixed Pseudo-Voigt formula in manual (program was not changed) (David Hovis)
* peak labels (above each peak) that can display peak area, position etc.
* fonts used for scale labels can be changed 
* data viewer (it is first step in implementing data editor)
* input field: up/down arrow keys work as in bash (wxComboBox was replaced
  by wxTextCtrl)
* optionally drawing sum and peaks as smooth curves (computed at every pixel)
* info about wxWidgets version in About box and --version switch for fityk-GUI. 

User-visible changes in version 0.4.3:

* wxWidgets 2.5 compatible
* data files (in addition to scripts) can be specified as command line 
  arguments to fityk-GUI. Scripts should either have .fit or .fityk extensions
  or start with "# Fityk" string. 
* crosshair cursor (GUI->Crosshair cursor)
* "Data->Load File" dialog (simple) allows to open many files 
* unix man page (Carlo Segre)

User-visible changes in version 0.4.2:

* "File" menu name was replaced with "Session", and "Manipulate" with "FindPeak"
* "s.info ^number" prints more informations.
* fixed problem with locales, that have decimal point different than dot. 
  Now LC_NUMERIC variable is ignored. (Vincent Favre-Nicolin)
* new configure flags: --enable-debug and --enable-optimization 
* ambiguous 'log(2)' in "export as function" was replaced by numeric value
  (in gnuplot log means natural log, in Excel log=log10). 
* program version is written in scripts (session dumps and log files) 
  and in configuration files

User-visible changes in version 0.4.1:

* two independent auxiliary plots (by default one is visible)
* implemented s.guess command that adjusts existing peak - also in peak pop-up 
  menu (based on patch sent by Jonathan Hunt)
* config file can store info, what windows are visible (see GUI->Show)

User-visible changes in version 0.4.0:

* multiple datasets in one plot
* multiple plots - all can be fitted simultaneously
* New menu items - GUI->Show->..., GUI->Scroll...

User-visible changes in version 0.3.4:

* enhanced peak dragging
* commands from ${HOME}/.fityk/init are executed on start-up
* added Data->Recent files->... to menu
* minor fixes

User-visible changes in version 0.3.3:

* Major changes in graphical interface (mouse usage, toolbar etc.)
* Added support for Siemens .raw data file format (Stefan Krumm) 

User-visible changes in version 0.3.2:

* Voigt function  
* File->Re-Include menu item
* File->Print Setup menu item
* Zoom All menu item added to main plot popup menu
* Zooming with left mouse button in normal mode 
* Auto-scaling auxiliary plot when changing type of the plot
* Exporting peak parameters (Sum->Export or s.export)
* Sum/Data Export: optionally appending to a file, instead of overwritting 
* Minor changes and bug fixes

User-visible changes in version 0.3.1:

* Saving GUI configuration to file (Unix) or registry (Windows)
* s.export ---> XFIT format 
* d.load ---> CPI format
* Minor bug fixes
* Minor changes in documentation (XSLT stylesheet for generating command and option indices)
* fityk.spec for creating RPMs
* Windows installer (produced with InnoSetup) 
* Using HtmlHelp (*.chm) manual format in Windows version