1 PSPP NEWS -- history of user-visible changes.
2 Time-stamp: <2006-01-28 19:05:46 blp>
3 Copyright (C) 1996-9, 2000 Free Software Foundation, Inc.
4 See the end for copying conditions.
6 Please send PSPP bug reports to bug-gnu-pspp@gnu.org.
10 Changes since 0.4.0 to 0.4.1:
12 Newly implemented commands and statistical features:
14 * CLOSE FILE HANDLE (a PSPP extension; see below).
18 * XEXPORT (a PSPP extension).
22 A new PSPP extension called "scratch files" has been implemented.
23 A scratch file, like a system file, consists of a dictionary and
24 any number of cases. A sufficiently small scratch file is stored
25 in memory; if it grows too large, it is written to disk. By
26 default, any file handle whose name begins with # is assumed to
27 refer to a scratch file.
29 Scratch files can be used just about anywhere a system or portable
30 file can be used. Also, portable files are now allowed in most
31 places that system files were allowed in previous PSPP version.
33 A new CLOSE FILE HANDLE command allows the storage associated with
34 scratch files to be freed. It also allows file handles to be
35 reassigned to new files.
37 For more information on scratch files, refer to the "File Handles"
38 section in the PSPP manual. For specifics of what commands now
39 allow what kinds of files to be specified, refer to the
40 documentation on those particular commands.
42 PSPP is now able to start up and run even if it cannot find its
45 Changes from 0.3.0 to 0.4.0:
47 Changes in build dependencies:
49 * The GNU Scientific Library (libgsl), version 1.6 or later, is
52 * libplot from GNU plotutils is optional. Without it, the new
53 graphing features will not work. If you do not have it
54 installed, you must run `configure' with --without-libplot.
56 * libgmp2 is no longer a dependency.
58 Newly implemented commands and statistical features:
60 * EXAMINE, including its graphing features.
62 * FREQUENCIES now supports percentiles.
70 * SORT CASES now sorts stably, that is, two cases with equal sort
71 criteria will be in the same relative order before and after the
74 * T-TEST (re-written).
76 * DATE and USE. These commands are parsed but otherwise ignored,
77 to enhance compatibility with certain command files that invoke
80 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
81 currently have no effect on PSPP output, but their values are
82 written to and read from system files and thus may affect
85 * SET EPOCH implemented.
87 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
90 * FILE HANDLE now supports custom tab widths.
92 Long variable names (and other identifiers) are now supported. Up
93 to the first 64 bytes of each identifier is significant. PSPP now
94 reads and writes system files compatible with SPSS version 12.
96 New --algorithm and --syntax command line options allow
97 SPSS-compatible or enhanced modes to be selected.
99 Support for transformation expressions has been rewritten and
100 significantly improved. Refer to the manual for details.
102 Calculation of moments (mean, standard deviation, kurtosis,
103 skewness) has been rewritten and should now be more accurate. In
104 --algorithm=enhanced mode moments may be more accurate than SPSS in
107 Numerous bugs have been fixed, too many to mention here. Many new
108 tests have been added, leading to the discovery and fixing of many
111 The ASCII output driver can now squeeze multiple blank lines into
114 Much of the code has been rewritten and refactored. It is now much
117 The FILE TYPE and REPEATING DATA commands have been disabled for
118 this release because their implementations were deemed too buggy to
119 be useful. They will be fixed and replaced in a future release.
121 New pspp-mode for Emacs (in pspp-mode.el).
123 Added rudimentary command-line completion for interactive input.
125 lib/julcal and lib/dcdflib are no longer used, so they have been
128 For developers, the build system now requires Autoconf 2.58 and
129 Automake 1.7. The included gettext has been updated to version
132 Some reports state that Texinfo 4.8, the latest version, may be
133 necessary to successfully format the documentation on some systems.
135 Version 0.3.0 changes since 0.2.3:
139 * Using alphanumeric variables in functions under AGGREGATE
142 * Under certain circumstances, the final case would be omitted
143 from the results of an AGGREGATE operation. Fixed.
145 * Undefined behavior was invoked by referencing a freed pointer
146 under certain circumstances. Fixed.
148 * A wrong record size was displayed when paging the active file to
151 * Not having enough temporary space for sorting caused a core
154 * Syntax errors in function descriptions on AGGREGATE caused core
157 * A null pointer was dereferenced, causing a core dump, when
158 PERCENTILES was specified on FREQUENCIES. This fixes the
159 problem, but PSPP still doesn't calculate percentiles.
161 * SORT always sorted in ascending order. Fixed.
163 * Some minor memory leaks in the expression parser were removed.
165 * Many assertions fixed for strict ANSI C compliance.
169 * SET ECHO ON now implemented, but turned off by default.
171 * PRINT specifier supported on END REPEAT.
175 * System libgmp2 library is used if installed instead of
176 unconditionally using the included libgmp2 subset.
178 * Extensive code cleanup, which continues.
180 * Added CORRELATIONS command parser, but not implemented.
182 Version 0.2.3 changes since 0.2.2:
186 * SPLIT FILE with a string variable caused a core dump. Fixed.
188 * Nested INCLUDEs didn't work. Fixed.
190 * The MATCH FILES procedure set the values of variables not present
191 to 0. It should have been SYSMIS. This is now fixed.
193 * The REMARK command was too aggressive about skipping lines. It
194 didn't like being the last command in a file.
196 * Comment parsing wasn't consistent with the rest of the code in its
197 idea of where one command ends and another starts. This meant
198 that sometimes commands would be mysteriously ignored. Thanks to
199 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
201 * The TABLE subcommand on MATCH FILES worked only erratically at
202 best. This fixes it. Thanks to Dr. Dirk Melcher
203 <BZN-mdksh@t-online.de> for reporting this bug.
205 * VARIABLE LABELS rejected a slash before the first variable
206 specification, contradicting the documentation. Thanks to Walter
207 M. Gray <graywm@northernc.on.ca> for reporting this bug.
209 * Because of an incorrect optimization in memory allocation,
210 CROSSTABS sometimes segfaulted when asked to output multiple
211 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
214 * CROSSTABS didn't display value labels for column and row
215 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
218 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
219 <BZN-mdksh@t-online.de> for reporting this bug.
221 * The TABLE subcommand on MATCH FILES worked only erratically at
222 best. This fixes it. Thanks to Dr. Dirk Melcher
223 <BZN-mdksh@t-online.de> for reporting this bug.
225 * VARIABLE LABELS rejected a slash before the first variable
226 specification, contradicting the documentation. Thanks to Walter
227 M. Gray <graywm@northernc.on.ca> for reporting this bug.
229 * Because of an incorrect optimization in memory allocation,
230 CROSSTABS sometimes segfaulted when asked to output multiple
231 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
234 * CROSSTABS didn't display value labels for column and row
235 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
238 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
239 <BZN-mdksh@t-online.de> for reporting this bug.
241 * MATCH FILES corrupted memory and dumped core on some syntax
244 * MATCH FILES should set numeric values not available to the
245 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
246 <BZN-mdksh@t-online.de> for reporting this bug.
248 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
249 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
253 * Some systems didn't like the way open_file was coded. Thanks to
254 Hankin <hankin@rogue.consultco.com> for pointing this out.
256 * The SAVE procedure didn't save long string variables properly.
257 Fixed by this patch. Thanks to Hankin
258 <hankin@rogue.consultco.com> for this patch.
260 * Minor documentation fixes for MATCH FILES.
262 Version 0.2.2 changes since 0.2.1:
266 * Fix behavior of PRINT SPACE for negative arguments.
268 * Fix reading some unusual system files.
270 * Fix LIST problems with very long variables. Thanks to Hankin
271 <hankin@dunno.com> for this bug report.
273 * Fix problems with some string format specifiers.
275 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
276 <BZN-mdksh@t-online.de> for reporting this bug.
278 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
279 Hankin <hankin@dunno.com> again on this one.
281 * Sometimes you may encounter a PSPP script that has to be
282 interpreted in interactive mode. Now you can use the -i flag to
285 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
286 `unused variable' warnings under gcc 2.7.2.3, fixing this will
291 * The files in gmp need the internationalization directory in
292 their include path. Thanks to OKUJI Yoshinori
293 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
295 Version 0.2.1 changes since 0.2.0:
299 * Remember to include examples/ directory in distribution :-)
301 * Fixed gmp compile problems for some non-i386 architectures.
302 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
305 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
306 matches the documented behavior exactly, and error messages are
307 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
309 Version 0.2.0 changes since 0.1.0:
311 Procedures now implemented:
312 * CROSSTABS. Please see documentation for caveats.
314 Transformations and utilities now implemented:
317 * CLEAR TRANSFORMATIONS
318 * DISPLAY (all subcommands).
329 Support for input and output through pipes: "|command" and
330 "command|" filenames; support for special filenames "-", "stdin",
333 New command-line features:
334 * New option --testing-mode: Invoke heuristics to assist testing.
335 * New option --safer, -s: Don't allow certain unsafe operations.
336 * New option --command=CMD, -c CMD: Perform literal command CMD.
337 * rc file ~/.pspp/rc is executed before any other files.
338 * Now multiple syntax files can be specified.
340 Operator LAG is now implemented.
342 Added missing FILE subcommand to REREAD.
344 Table output manager completely rewritten.
346 Device configuration file syntax changed. You will need to
347 reinstall your `devices' file.
349 New output driver for HTML.
351 PostScript driver and prologue simplified.
353 Many bugs fixed. General source-code cleanup.
355 Added Texinfo documentation for:
356 * PSPP system file format
357 * PSPP portable file format
358 * How to write input for q2c parser generator
361 PSPP language is now fully documented. Please report any
362 inaccuracies or omissions in the documentation.
364 Changes for version 0.1.0:
366 First public release. For changes from unreleased development
367 versions, please see ONEWS.
369 ----------------------------------------------------------------------
370 Copyright information:
372 Copyright (C) 1996-9, 2000 Free Software Foundation, Inc.
374 Permission is granted to anyone to make or distribute verbatim
375 copies of this document as received, in any medium, provided that
376 the copyright notice and this permission notice are preserved, thus
377 giving the recipient permission to redistribute in turn.
379 Permission is granted to distribute modified versions of this
380 document, or of portions of it, under the above conditions,
381 provided also that they carry prominent notices stating who last
385 version-control: never