1 PSPP NEWS -- history of user-visible changes.
2 Time-stamp: <2007-04-03 17:40:57 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 in build dependencies:
12 * iconv, which is ordinarily installed as part of a Unix-like
13 system, is now required. If you don't have it already, you can
14 install GNU libiconv (http://www.gnu.org/software/libiconv/).
16 The PROCESS IF command, which was deprecated, has been removed. You
17 may replace any usage of it by SELECT IF following TEMPORARY, which
20 For developers, the build system now requires Autoconf 2.60 and
23 Changes since 0.4.0 to 0.4.1:
25 Added support for very long string variables > 255 bytes.
29 * Output configuration options have changed. Please refer to the
30 manual for a full description of the available options.
32 In consequence, you will need to reinstall your "devices" file.
33 "make install" will do this for you.
35 * The PostScript driver now obtains font metrics from AFM files,
36 instead of Groff-format metrics files. It can now embed
37 PostScript fonts in its output.
39 In consequence, you will need to install an AFM file for each
40 font used in PostScript output. "make install" will install AFM
41 files for the standard PostScript files, including the ones that
42 the PostScript driver uses by default.
44 Newly implemented commands and statistical features:
46 * CLOSE FILE HANDLE (a PSPP extension; see below).
50 * XEXPORT (a PSPP extension).
54 A new PSPP extension called "scratch files" has been implemented.
55 A scratch file, like a system file, consists of a dictionary and
56 any number of cases. Small scratch files are stored in memory;
57 one that grows too large is written to disk. By default, any file
58 handle whose name begins with # is assumed to refer to a scratch
61 Scratch files can be used just about anywhere a system or portable
62 file can be used. Also, portable files are now allowed in most
63 places that system files were allowed in previous PSPP version.
65 A new CLOSE FILE HANDLE command allows the storage associated with
66 scratch files to be freed. It also allows file handles to be
67 reassigned to new files.
69 For more information on scratch files, refer to the "File Handles"
70 section in the PSPP manual. For specifics of what commands now
71 allow what kinds of files to be specified, refer to the
72 documentation on those particular commands.
74 PSPP is now able to start up and run even if it cannot find its
77 Changes from 0.3.0 to 0.4.0:
79 Changes in build dependencies:
81 * The GNU Scientific Library (libgsl), version 1.6 or later, is
84 * libplot from GNU plotutils is optional. Without it, the new
85 graphing features will not work. If you do not have it
86 installed, you must run `configure' with --without-libplot.
88 * libgmp2 is no longer a dependency.
90 Newly implemented commands and statistical features:
92 * EXAMINE, including its graphing features.
94 * FREQUENCIES now supports percentiles.
102 * SORT CASES now sorts stably, that is, two cases with equal sort
103 criteria will be in the same relative order before and after the
106 * T-TEST (re-written).
108 * DATE and USE. These commands are parsed but otherwise ignored,
109 to enhance compatibility with certain command files that invoke
112 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
113 currently have no effect on PSPP output, but their values are
114 written to and read from system files and thus may affect
115 third-party software.
117 * SET EPOCH implemented.
119 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
122 * FILE HANDLE now supports custom tab widths.
124 Long variable names (and other identifiers) are now supported. Up
125 to the first 64 bytes of each identifier is significant. PSPP now
126 reads and writes system files compatible with SPSS version 12.
128 New --algorithm and --syntax command line options allow
129 SPSS-compatible or enhanced modes to be selected.
131 Support for transformation expressions has been rewritten and
132 significantly improved. Refer to the manual for details.
134 Calculation of moments (mean, standard deviation, kurtosis,
135 skewness) has been rewritten and should now be more accurate. In
136 --algorithm=enhanced mode moments may be more accurate than SPSS in
139 Numerous bugs have been fixed, too many to mention here. Many new
140 tests have been added, leading to the discovery and fixing of many
143 The ASCII output driver can now squeeze multiple blank lines into
146 Much of the code has been rewritten and refactored. It is now much
149 The FILE TYPE and REPEATING DATA commands have been disabled for
150 this release because their implementations were deemed too buggy to
151 be useful. They will be fixed and replaced in a future release.
153 New pspp-mode for Emacs (in pspp-mode.el).
155 Added rudimentary command-line completion for interactive input.
157 lib/julcal and lib/dcdflib are no longer used, so they have been
160 For developers, the build system now requires Autoconf 2.58 and
161 Automake 1.7. The included gettext has been updated to version
164 Some reports state that Texinfo 4.8, the latest version, may be
165 necessary to successfully format the documentation on some systems.
167 Version 0.3.0 changes since 0.2.3:
171 * Using alphanumeric variables in functions under AGGREGATE
174 * Under certain circumstances, the final case would be omitted
175 from the results of an AGGREGATE operation. Fixed.
177 * Undefined behavior was invoked by referencing a freed pointer
178 under certain circumstances. Fixed.
180 * A wrong record size was displayed when paging the active file to
183 * Not having enough temporary space for sorting caused a core
186 * Syntax errors in function descriptions on AGGREGATE caused core
189 * A null pointer was dereferenced, causing a core dump, when
190 PERCENTILES was specified on FREQUENCIES. This fixes the
191 problem, but PSPP still doesn't calculate percentiles.
193 * SORT always sorted in ascending order. Fixed.
195 * Some minor memory leaks in the expression parser were removed.
197 * Many assertions fixed for strict ANSI C compliance.
201 * SET ECHO ON now implemented, but turned off by default.
203 * PRINT specifier supported on END REPEAT.
207 * System libgmp2 library is used if installed instead of
208 unconditionally using the included libgmp2 subset.
210 * Extensive code cleanup, which continues.
212 * Added CORRELATIONS command parser, but not implemented.
214 Version 0.2.3 changes since 0.2.2:
218 * SPLIT FILE with a string variable caused a core dump. Fixed.
220 * Nested INCLUDEs didn't work. Fixed.
222 * The MATCH FILES procedure set the values of variables not present
223 to 0. It should have been SYSMIS. This is now fixed.
225 * The REMARK command was too aggressive about skipping lines. It
226 didn't like being the last command in a file.
228 * Comment parsing wasn't consistent with the rest of the code in its
229 idea of where one command ends and another starts. This meant
230 that sometimes commands would be mysteriously ignored. Thanks to
231 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
233 * The TABLE subcommand on MATCH FILES worked only erratically at
234 best. This fixes it. Thanks to Dr. Dirk Melcher
235 <BZN-mdksh@t-online.de> for reporting this bug.
237 * VARIABLE LABELS rejected a slash before the first variable
238 specification, contradicting the documentation. Thanks to Walter
239 M. Gray <graywm@northernc.on.ca> for reporting this bug.
241 * Because of an incorrect optimization in memory allocation,
242 CROSSTABS sometimes segfaulted when asked to output multiple
243 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
246 * CROSSTABS didn't display value labels for column and row
247 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
250 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
251 <BZN-mdksh@t-online.de> for reporting this bug.
253 * The TABLE subcommand on MATCH FILES worked only erratically at
254 best. This fixes it. Thanks to Dr. Dirk Melcher
255 <BZN-mdksh@t-online.de> for reporting this bug.
257 * VARIABLE LABELS rejected a slash before the first variable
258 specification, contradicting the documentation. Thanks to Walter
259 M. Gray <graywm@northernc.on.ca> for reporting this bug.
261 * Because of an incorrect optimization in memory allocation,
262 CROSSTABS sometimes segfaulted when asked to output multiple
263 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
266 * CROSSTABS didn't display value labels for column and row
267 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
270 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
271 <BZN-mdksh@t-online.de> for reporting this bug.
273 * MATCH FILES corrupted memory and dumped core on some syntax
276 * MATCH FILES should set numeric values not available to the
277 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
278 <BZN-mdksh@t-online.de> for reporting this bug.
280 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
281 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
285 * Some systems didn't like the way open_file was coded. Thanks to
286 Hankin <hankin@rogue.consultco.com> for pointing this out.
288 * The SAVE procedure didn't save long string variables properly.
289 Fixed by this patch. Thanks to Hankin
290 <hankin@rogue.consultco.com> for this patch.
292 * Minor documentation fixes for MATCH FILES.
294 Version 0.2.2 changes since 0.2.1:
298 * Fix behavior of PRINT SPACE for negative arguments.
300 * Fix reading some unusual system files.
302 * Fix LIST problems with very long variables. Thanks to Hankin
303 <hankin@dunno.com> for this bug report.
305 * Fix problems with some string format specifiers.
307 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
308 <BZN-mdksh@t-online.de> for reporting this bug.
310 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
311 Hankin <hankin@dunno.com> again on this one.
313 * Sometimes you may encounter a PSPP script that has to be
314 interpreted in interactive mode. Now you can use the -i flag to
317 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
318 `unused variable' warnings under gcc 2.7.2.3, fixing this will
323 * The files in gmp need the internationalization directory in
324 their include path. Thanks to OKUJI Yoshinori
325 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
327 Version 0.2.1 changes since 0.2.0:
331 * Remember to include examples/ directory in distribution :-)
333 * Fixed gmp compile problems for some non-i386 architectures.
334 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
337 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
338 matches the documented behavior exactly, and error messages are
339 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
341 Version 0.2.0 changes since 0.1.0:
343 Procedures now implemented:
344 * CROSSTABS. Please see documentation for caveats.
346 Transformations and utilities now implemented:
349 * CLEAR TRANSFORMATIONS
350 * DISPLAY (all subcommands).
361 Support for input and output through pipes: "|command" and
362 "command|" filenames; support for special filenames "-", "stdin",
365 New command-line features:
366 * New option --testing-mode: Invoke heuristics to assist testing.
367 * New option --safer, -s: Don't allow certain unsafe operations.
368 * New option --command=CMD, -c CMD: Perform literal command CMD.
369 * rc file ~/.pspp/rc is executed before any other files.
370 * Now multiple syntax files can be specified.
372 Operator LAG is now implemented.
374 Added missing FILE subcommand to REREAD.
376 Table output manager completely rewritten.
378 Device configuration file syntax changed. You will need to
379 reinstall your `devices' file.
381 New output driver for HTML.
383 PostScript driver and prologue simplified.
385 Many bugs fixed. General source-code cleanup.
387 Added Texinfo documentation for:
388 * PSPP system file format
389 * PSPP portable file format
390 * How to write input for q2c parser generator
393 PSPP language is now fully documented. Please report any
394 inaccuracies or omissions in the documentation.
396 Changes for version 0.1.0:
398 First public release. For changes from unreleased development
399 versions, please see ONEWS.
401 ----------------------------------------------------------------------
402 Copyright information:
404 Copyright (C) 1996-9, 2000 Free Software Foundation, Inc.
406 Permission is granted to anyone to make or distribute verbatim
407 copies of this document as received, in any medium, provided that
408 the copyright notice and this permission notice are preserved, thus
409 giving the recipient permission to redistribute in turn.
411 Permission is granted to distribute modified versions of this
412 document, or of portions of it, under the above conditions,
413 provided also that they carry prominent notices stating who last
417 version-control: never