1 PSPP NEWS -- history of user-visible changes.
2 Time-stamp: <2006-05-06 13:24:08 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 The PROCESS IF command, which was deprecated, has been removed. You
11 may replace any usage of it by SELECT IF following TEMPORARY, which
14 Changes since 0.4.0 to 0.4.1:
16 Added support for very long string variables > 255 bytes.
20 * Output configuration options have changed. Please refer to the
21 manual for a full description of the available options.
23 In consequence, you will need to reinstall your "devices" file.
24 "make install" will do this for you.
26 * The PostScript driver now obtains font metrics from AFM files,
27 instead of Groff-format metrics files. It can now embed
28 PostScript fonts in its output.
30 In consequence, you will need to install an AFM file for each
31 font used in PostScript output. "make install" will install AFM
32 files for the standard PostScript files, including the ones that
33 the PostScript driver uses by default.
35 Newly implemented commands and statistical features:
37 * CLOSE FILE HANDLE (a PSPP extension; see below).
41 * XEXPORT (a PSPP extension).
45 A new PSPP extension called "scratch files" has been implemented.
46 A scratch file, like a system file, consists of a dictionary and
47 any number of cases. Small scratch files are stored in memory;
48 one that grows too large is written to disk. By default, any file
49 handle whose name begins with # is assumed to refer to a scratch
52 Scratch files can be used just about anywhere a system or portable
53 file can be used. Also, portable files are now allowed in most
54 places that system files were allowed in previous PSPP version.
56 A new CLOSE FILE HANDLE command allows the storage associated with
57 scratch files to be freed. It also allows file handles to be
58 reassigned to new files.
60 For more information on scratch files, refer to the "File Handles"
61 section in the PSPP manual. For specifics of what commands now
62 allow what kinds of files to be specified, refer to the
63 documentation on those particular commands.
65 PSPP is now able to start up and run even if it cannot find its
68 Changes from 0.3.0 to 0.4.0:
70 Changes in build dependencies:
72 * The GNU Scientific Library (libgsl), version 1.6 or later, is
75 * libplot from GNU plotutils is optional. Without it, the new
76 graphing features will not work. If you do not have it
77 installed, you must run `configure' with --without-libplot.
79 * libgmp2 is no longer a dependency.
81 Newly implemented commands and statistical features:
83 * EXAMINE, including its graphing features.
85 * FREQUENCIES now supports percentiles.
93 * SORT CASES now sorts stably, that is, two cases with equal sort
94 criteria will be in the same relative order before and after the
97 * T-TEST (re-written).
99 * DATE and USE. These commands are parsed but otherwise ignored,
100 to enhance compatibility with certain command files that invoke
103 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
104 currently have no effect on PSPP output, but their values are
105 written to and read from system files and thus may affect
106 third-party software.
108 * SET EPOCH implemented.
110 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
113 * FILE HANDLE now supports custom tab widths.
115 Long variable names (and other identifiers) are now supported. Up
116 to the first 64 bytes of each identifier is significant. PSPP now
117 reads and writes system files compatible with SPSS version 12.
119 New --algorithm and --syntax command line options allow
120 SPSS-compatible or enhanced modes to be selected.
122 Support for transformation expressions has been rewritten and
123 significantly improved. Refer to the manual for details.
125 Calculation of moments (mean, standard deviation, kurtosis,
126 skewness) has been rewritten and should now be more accurate. In
127 --algorithm=enhanced mode moments may be more accurate than SPSS in
130 Numerous bugs have been fixed, too many to mention here. Many new
131 tests have been added, leading to the discovery and fixing of many
134 The ASCII output driver can now squeeze multiple blank lines into
137 Much of the code has been rewritten and refactored. It is now much
140 The FILE TYPE and REPEATING DATA commands have been disabled for
141 this release because their implementations were deemed too buggy to
142 be useful. They will be fixed and replaced in a future release.
144 New pspp-mode for Emacs (in pspp-mode.el).
146 Added rudimentary command-line completion for interactive input.
148 lib/julcal and lib/dcdflib are no longer used, so they have been
151 For developers, the build system now requires Autoconf 2.58 and
152 Automake 1.7. The included gettext has been updated to version
155 Some reports state that Texinfo 4.8, the latest version, may be
156 necessary to successfully format the documentation on some systems.
158 Version 0.3.0 changes since 0.2.3:
162 * Using alphanumeric variables in functions under AGGREGATE
165 * Under certain circumstances, the final case would be omitted
166 from the results of an AGGREGATE operation. Fixed.
168 * Undefined behavior was invoked by referencing a freed pointer
169 under certain circumstances. Fixed.
171 * A wrong record size was displayed when paging the active file to
174 * Not having enough temporary space for sorting caused a core
177 * Syntax errors in function descriptions on AGGREGATE caused core
180 * A null pointer was dereferenced, causing a core dump, when
181 PERCENTILES was specified on FREQUENCIES. This fixes the
182 problem, but PSPP still doesn't calculate percentiles.
184 * SORT always sorted in ascending order. Fixed.
186 * Some minor memory leaks in the expression parser were removed.
188 * Many assertions fixed for strict ANSI C compliance.
192 * SET ECHO ON now implemented, but turned off by default.
194 * PRINT specifier supported on END REPEAT.
198 * System libgmp2 library is used if installed instead of
199 unconditionally using the included libgmp2 subset.
201 * Extensive code cleanup, which continues.
203 * Added CORRELATIONS command parser, but not implemented.
205 Version 0.2.3 changes since 0.2.2:
209 * SPLIT FILE with a string variable caused a core dump. Fixed.
211 * Nested INCLUDEs didn't work. Fixed.
213 * The MATCH FILES procedure set the values of variables not present
214 to 0. It should have been SYSMIS. This is now fixed.
216 * The REMARK command was too aggressive about skipping lines. It
217 didn't like being the last command in a file.
219 * Comment parsing wasn't consistent with the rest of the code in its
220 idea of where one command ends and another starts. This meant
221 that sometimes commands would be mysteriously ignored. Thanks to
222 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
224 * The TABLE subcommand on MATCH FILES worked only erratically at
225 best. This fixes it. Thanks to Dr. Dirk Melcher
226 <BZN-mdksh@t-online.de> for reporting this bug.
228 * VARIABLE LABELS rejected a slash before the first variable
229 specification, contradicting the documentation. Thanks to Walter
230 M. Gray <graywm@northernc.on.ca> for reporting this bug.
232 * Because of an incorrect optimization in memory allocation,
233 CROSSTABS sometimes segfaulted when asked to output multiple
234 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
237 * CROSSTABS didn't display value labels for column and row
238 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
241 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
242 <BZN-mdksh@t-online.de> for reporting this bug.
244 * The TABLE subcommand on MATCH FILES worked only erratically at
245 best. This fixes it. Thanks to Dr. Dirk Melcher
246 <BZN-mdksh@t-online.de> for reporting this bug.
248 * VARIABLE LABELS rejected a slash before the first variable
249 specification, contradicting the documentation. Thanks to Walter
250 M. Gray <graywm@northernc.on.ca> for reporting this bug.
252 * Because of an incorrect optimization in memory allocation,
253 CROSSTABS sometimes segfaulted when asked to output multiple
254 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
257 * CROSSTABS didn't display value labels for column and row
258 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
261 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
262 <BZN-mdksh@t-online.de> for reporting this bug.
264 * MATCH FILES corrupted memory and dumped core on some syntax
267 * MATCH FILES should set numeric values not available to the
268 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
269 <BZN-mdksh@t-online.de> for reporting this bug.
271 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
272 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
276 * Some systems didn't like the way open_file was coded. Thanks to
277 Hankin <hankin@rogue.consultco.com> for pointing this out.
279 * The SAVE procedure didn't save long string variables properly.
280 Fixed by this patch. Thanks to Hankin
281 <hankin@rogue.consultco.com> for this patch.
283 * Minor documentation fixes for MATCH FILES.
285 Version 0.2.2 changes since 0.2.1:
289 * Fix behavior of PRINT SPACE for negative arguments.
291 * Fix reading some unusual system files.
293 * Fix LIST problems with very long variables. Thanks to Hankin
294 <hankin@dunno.com> for this bug report.
296 * Fix problems with some string format specifiers.
298 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
299 <BZN-mdksh@t-online.de> for reporting this bug.
301 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
302 Hankin <hankin@dunno.com> again on this one.
304 * Sometimes you may encounter a PSPP script that has to be
305 interpreted in interactive mode. Now you can use the -i flag to
308 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
309 `unused variable' warnings under gcc 2.7.2.3, fixing this will
314 * The files in gmp need the internationalization directory in
315 their include path. Thanks to OKUJI Yoshinori
316 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
318 Version 0.2.1 changes since 0.2.0:
322 * Remember to include examples/ directory in distribution :-)
324 * Fixed gmp compile problems for some non-i386 architectures.
325 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
328 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
329 matches the documented behavior exactly, and error messages are
330 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
332 Version 0.2.0 changes since 0.1.0:
334 Procedures now implemented:
335 * CROSSTABS. Please see documentation for caveats.
337 Transformations and utilities now implemented:
340 * CLEAR TRANSFORMATIONS
341 * DISPLAY (all subcommands).
352 Support for input and output through pipes: "|command" and
353 "command|" filenames; support for special filenames "-", "stdin",
356 New command-line features:
357 * New option --testing-mode: Invoke heuristics to assist testing.
358 * New option --safer, -s: Don't allow certain unsafe operations.
359 * New option --command=CMD, -c CMD: Perform literal command CMD.
360 * rc file ~/.pspp/rc is executed before any other files.
361 * Now multiple syntax files can be specified.
363 Operator LAG is now implemented.
365 Added missing FILE subcommand to REREAD.
367 Table output manager completely rewritten.
369 Device configuration file syntax changed. You will need to
370 reinstall your `devices' file.
372 New output driver for HTML.
374 PostScript driver and prologue simplified.
376 Many bugs fixed. General source-code cleanup.
378 Added Texinfo documentation for:
379 * PSPP system file format
380 * PSPP portable file format
381 * How to write input for q2c parser generator
384 PSPP language is now fully documented. Please report any
385 inaccuracies or omissions in the documentation.
387 Changes for version 0.1.0:
389 First public release. For changes from unreleased development
390 versions, please see ONEWS.
392 ----------------------------------------------------------------------
393 Copyright information:
395 Copyright (C) 1996-9, 2000 Free Software Foundation, Inc.
397 Permission is granted to anyone to make or distribute verbatim
398 copies of this document as received, in any medium, provided that
399 the copyright notice and this permission notice are preserved, thus
400 giving the recipient permission to redistribute in turn.
402 Permission is granted to distribute modified versions of this
403 document, or of portions of it, under the above conditions,
404 provided also that they carry prominent notices stating who last
408 version-control: never