1 PSPP NEWS -- history of user-visible changes.
2 Copyright (C) 1996-2000, 2008-2016, 2017, 2019, 2020, 2021 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send PSPP bug reports to bug-gnu-pspp@gnu.org.
7 Changes from 1.4.1 to 1.5.2:
9 * An error in the displayed signficance of oneway anova
10 contrasts tests has been corrected.
12 * Added Drag-N-Drop in output view.
14 * The Explore GUI dialog supports the "Plots" subdialog. Boxplots, Q-Q Plots
15 and Spreadlevel plots are now also available via the GUI.
17 * The graphical user interface for importing spreadsheets has been improved.
18 The new interface provides the user with a preview of the data to be imported
19 and interactive methods to select the desired ranges.
21 * The user manual, in its Info and HTML versions, now includes
22 graphical output examples and screenshots.
24 * gettext 0.20 or later is required for building.
26 * Output improvements:
28 - New drivers for output to TeX source files and to PNG files.
30 - Table output styles may now be set with the new option
31 --table-look and the new SET TLOOK command.
33 - New driver option "trim" to remove empty space from PDF,
34 PostScript, SVG, and PNG output files.
36 - The PDF output driver now adds an outline to allow PDF viewers to display
37 as a "table of contents" for the file.
39 - The HTML output driver has a new option "bare".
41 * New features in pspp-output:
43 - New --table-look and --nth-commands options.
45 - New get-table-look and convert-table-look commands.
47 Changes from 1.4.0 to 1.4.1:
51 * Translation updates.
53 * HTML output is now HTML5 instead of HTML4.0 Transitional.
55 * The HOST command has been reimplemented. It now supports TIMELIMIT.
57 Changes from 1.2.0 to 1.4.0:
59 * The file pspp-mode.el (the pspp-mode for Emacs) is no longer distributed
60 with PSPP. Instead, it can be installed directly in emacs and is available
61 from https://elpa.gnu.org/packages/pspp-mode.html
63 * The Find dialog box, when searching for numeric values, will match only
64 to the precision of the variable's print format. This avoids behaviour
65 which is surprising to some users.
67 * PSPP now supports the SPSS viewer (.spv) format that SPSS 16 and later
68 use to save the contents of its output editor:
70 - PSPP and PSPPIRE can write output to .spv files.
72 - The new utility pspp-output can convert .spv files to other formats.
74 - The pspp-convert utility can now decrypt encrypted .spv files. The
75 encrypted viewer file format is unacceptably insecure, so to
76 discourage its use PSPP and PSPPIRE do not directly read or write
79 * A bug where the Data|Select Cases|Random Sample menu would generate
80 invalid syntax has been fixed.
82 * FREQUENCIES will emit a warning if one or more weight values are missing.
84 * Plain text output is no longer divided into pages, since it is now
85 rarely printed on paper.
87 * pspp-convert improvements:
89 - New "-a", "-l", "--password-list" options to search for an
90 encrypted file's password.
92 - New "--keep" and "--drop" options to output only selected variables.
94 - New "--recode", "--no-var-name", "--labels", "--print-formats",
95 "--decimal", "--delimiter", and "--qualifier" options to control
98 * Improvements to SAVE DATA COLLECTION support for MDD files.
100 * Bug fix for CVE-2018-20230.
102 * The /RENAME subcommand in SAVE TRANSLATE et al. has been extended
103 to support the syntax also accepted by other software.
105 * The EXAMINE command will now perform the Shapiro-Wilk test when
106 one or more plots are requested.
108 * The REGRESSION command now supports the /STATISTICS=TOL option which
109 outputs tolerance and variance inflation factor metrics for the data.
111 * The QUICK CLUSTER command now supports the /SAVE option which can
112 be used to save the cases' cluster membership and/or their distance
113 from the cluster centre to the active file.
115 * The MEANS command has been re-implemented.
117 * The GUI now has a sub-dialog for post-hoc tests of the oneway
120 * Gtk+3.22.0 or later must now be used when building.
122 * GRAPH: Categorical barcharts displaying percentages now show the
123 sub-category as a percentage of the primary category instead of the
126 * The Syntax Window now has a Find function to perform simple text
131 - The PRINT subcommand is now implemented.
135 Changes from 1.0.1 to 1.2.0:
137 * New experimental command SAVE DATA COLLECTION to save MDD files.
139 * MTIME and YMDHMS variable formats now supported.
143 - zlib is now a required dependency. (Previously it was optional.)
145 - Gtk+3.18.0 or later must now be used when building.
147 - The code implementing the sheet rendering has been removed. Instead we
148 use a third party library: spread-sheet-widget.
150 * The "NOMISSING" keyword when generating syntax for piecharts in the
151 frequencies command was omitted. This has been corrected.
153 Changes from 1.0.0 to 1.0.1:
155 * Bug fixes, including fixes for CVE-2017-12958, CVE-2017-12959,
156 CVE-2017-12960, and CVE-2017-12961.
158 Changes from 0.11.0 to 1.0.0:
160 * Translation updates.
162 Changes from 0.10.2 to 0.11.0:
164 * The REGRESSION command now has a /ORIGIN subcommand to perform
165 regression through the origin.
167 * The FACTOR command can now analyse matrix files prepared with MATRIX DATA.
169 * The FACTOR command can now print the anti-image matrices.
171 * The MATRIX DATA command has been added.
173 * Some inappropriate properties in selection dialogs have been corrected.
175 * A bug which could cause the HTML driver to go into a tight loop
178 * An error in the FREQUENCIES procedure, where the word "Mean" was
179 printed when "Variance" was appropriate has been fixed.
181 * The ncurses library is no longer required or used.
183 * A bug where the Mann-Whitney test would give misleading results
184 if run on multiple variables and MISSING=ANALAYSIS was specified
187 * Gtk+3.14.5 or later must now be used when building.
189 * Graphical user interface changes:
191 ** There is a new menu: Edit|Options
193 ** The Non Parametric Statistics Menu has a new item: "K Independent Samples".
195 ** Dialog boxes can now be canceled using the <Escape> key.
197 * The AUTORECODE command now accepts an optional / before INTO.
199 * The short form of the VECTOR command can now create string variables.
201 * Bug fixes, including fixes for CVE-2017-10791 and CVE-2017-10792.
203 Changes from 0.10.1 to 0.10.2:
205 * CROSSTABS implements a new COUNT subcommand to round case or cell
208 * Help will be opened as HTML in default browser if yelp
211 * When plotting scatterplots with only one dataset (the simple case)
212 the colour used for the dataset is now black. The previous default
213 from the Tango palette was too faint to see easily.
215 * The varible info dialog could previously only paste a single variable.
216 Now it can paste multiple variables.
218 * Bug fixes, including the following:
220 - T-test with independent samples GUI crashed with string
221 type variable as group variable.
223 - The variable info dialog showed the previous selected variable
224 superimposed with the currently selected one.
226 - The GLM command did not properly deal with missing values. This
229 Changes from 0.10.0 to 0.10.1:
231 * Bug fixes, including the following:
233 - A bug where certain dialog boxes could not be properly populated
236 - Various commands have been hardened against errors when called
239 * Translation updates. Thanks to our translators!
241 Changes from 0.8.5 to 0.10.0:
243 * The QUICK CLUSTER command has a /PRINT subcommand which shows
244 the initial cluster centres and the final cluster membership of
245 each case. The clustering algorithm has also been updated, so
246 as to produce better separated clusters.
248 * A Russian localisation has been contributed.
250 * The GRAPH command now has a /BAR subcommand to draw barcharts.
252 * If the DECIMAL character is set to COMMA then the ',' character
253 will not be treated as a separator by DATA LIST.
255 * The graphical user interface (psppire) has been changed as follows:
257 - It now uses Gtk+ version 3 instead of version 2. Accordingly, it has a
258 somewhat different look and feel.
260 - There is now a Graphs menu to access the GRAPH command.
262 - The status of dialog box widgets are now preserved between calls
263 to the same dialog box for the same dataset.
265 - The dialog box for the Logistic Regression command will now
266 infer that string variables or any varible with a "measure"
267 of Nominal or Ordinal are to be treated as categorical variables
268 and will generate syntax accordingly.
270 * The pspp-convert utility can now decrypt encrypted syntax files.
271 The encrypted syntax file format is unacceptably insecure, so to
272 discourage its use PSPP and PSPPIRE do not directly read or write
279 * The following functions for transformation expressions are new:
281 - REPLACE, for search-and-replace of one string with another.
283 - STRUNC, to truncate a string and trim trailing spaces.
285 - MEDIAN, to compute the median of its arguments.
287 - The TRUNC function in expressions now supports additional arguments
288 for truncating to values other than integers and to indicate a level
289 of rounding fuzz. The default rounding fuzz may now be controlled
290 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
292 * Bug fixes, including the following notable ones:
294 - The correlation coefficient in the paired samples t-test
295 procedure is now correctly calculated when presented with
298 - The ESCAPE subcommand has been removed from GET DATA /TYPE=TXT.
299 For compatibility, the behavior that ESCAPE enabled is now the
300 default and only supported behavior.
302 - Rendering of the variable and data sheets in right-to-left locales
305 - The Mann-Whitney test, when run on a dataset containing values
306 of the group variable, other than those defining the test groups,
307 would incorrectly calculate the ranks. This has been corrected.
309 * The IMPORTCASES subcommand on GET DATA is now ignored, for
312 Changes from 0.8.4 to 0.8.5:
314 * The FREQUENCIES and CROSSTABS commands can now generate barcharts.
316 * The FACTOR command can now perform PROMAX rotations.
318 * SPSS/PC+ system files are now supported on GET and other commands
319 that read SPSS system files. The pspp-convert program can now read
320 SPSS/PC+ system files. Writing the obsolete SPSS/PC+ system file
321 format is not supported.
323 * SYSFILE INFO can now read SPSS/PC+ system files and SPSS portable
326 * FREQUENCIES: A bug was fixed where an assertion failure occurred
327 when an empty dataset was presented.
329 * The GRAPH command is now available. Initially it supports
330 scatterplots and histograms.
332 * The RND operator in expressions now supports additional operands
333 for rounding to values other than integers and to indicate a level
334 of rounding fuzz. The default rounding fuzz may now be controlled
335 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
337 Changes from 0.8.3 to 0.8.4:
339 * Formatting of SYSFILE INFO output was made easier to read.
341 * Bug fixes, including the following notable ones:
343 - FREQUENCIES works properly for string variables. (This bug was
344 introduced in 0.8.2.)
346 - CROSSTABS now correctly computes all of the measures that it
347 offers. Some measures have been removed because they were not
350 - The NPAR TESTS calculation of significance for the RUNS
351 subcommand has been corrected.
353 - Planned comparisons in ONEWAY ANOVA now correctly handle negative
356 - The COUNT command now correctly treats missing values as
359 - Conformance fixes to Open Document output format.
361 Changes from 0.8.2 to 0.8.3:
363 * Independent T-Tests displayed the standard error of the difference
364 and the confidence interval for the unequal variances case, where
365 the equal variances case should have been. This has been fixed.
367 * REGRESSION now recognises /STATISTICS=CI(x) which causes confidence
368 intervals for the coefficients to be printed.
370 * When DESCRIPTIVES calculates Z scores, it now omits cases filtered
371 by the current FILTER settings.
373 * PSPPIRE graphical user interface improvements:
375 - Dialog boxes with source variable lists can now choose the sort
376 order; right click and select from the popup menu.
378 - File|Open now allows an encoding to be selected for opening
381 - File|Display Data File Information|External File... now allows an
382 encoding to be selected.
384 - A problem with the Means dialog has been resolved (bug #41433).
386 - Several problems related to the input of spreadsheets have been
387 fixed (bug #41657, #41620
389 * System file related improvements:
391 - With ENCODING="DETECT", SYSFILE INFO can now help the user to
392 pick an encoding for reading a system file that does not identify
395 - SYSFILE INFO now accepts an ENCODING subcommand to specify the
396 character encoding of string data in the system file.
398 - Variable labels over 255 bytes long are now accepted without
399 truncation (bug #41863).
401 - System files that contain duplicate variable names may now be
402 read successfully (bug #41475).
404 Changes from 0.8.1 to 0.8.2:
406 * Charts are now rendered with colours from the Tango palette instead
407 of fully saturated primaries.
409 * Support for new system file variants:
411 - PSPP can now read and write ZCOMPRESSED system files, which
412 compress data much more effectively than older "compressed"
413 files. (The older format is still supported.)
415 - PSPP can now decrypt encrypted system files, using the new
416 pspp-convert utility. The encrypted system file format is
417 unacceptably insecure, so to discourage its use PSPP and PSPPIRE
418 do not directly read or write this format.
420 * Missing values for long string variables are now read from and
421 written to system files in an SPSS-compatible fashion.
423 (Earlier versions of PSPP that supported missing values for long
424 string variables wrote them to system files in an SPSS-incompatible
425 way. To fix the problem, read the system file with this version of
426 PSPP and then save a new copy of it.)
428 * pspp-convert, a new standalone utility for converting SPSS system
429 and portable files to other formats, is now included. The initial
430 version supports comma-separated value files as output format.
431 pspp-convert can also decrypt encrypted system files.
435 - zlib is now a required dependency. (Previously it was optional.)
437 Changes from 0.8.0 to 0.8.1:
443 * Changes to existing commands:
445 - CROSSTABS: The requirement that one expected count must be less than five
446 before Fishers Exact Test will be reported has been removed.
448 * PSPPIRE graphical user interface improvements:
450 - A new set of icons has been contributed.
452 - Syntax windows now parse syntax in "auto" mode, which in practice
453 should mean that both "batch" and "interactive" syntax now works,
454 instead of just "interactive" syntax.
456 - The variable pane of data windows now include a Role column.
460 - System files written by IBM SPSS 21 are now read without warnings.
462 - System files written by "VOXCO INTERVIEWER 4.3" are now read
465 - PSPPIRE should now more gracefully handle syntax files that contain
468 Changes from 0.6.2 to 0.8.0:
474 - DATAFILE ATTRIBUTES
481 - LOGISTIC REGRESSION
485 - PRESERVE and RESTORE
489 - SAVE TRANSLATE to CSV and tab-delimited files
491 - VARIABLE ATTRIBUTES
493 * Changes to existing commands:
495 - AUTORECODE has a new GROUP subcommand.
497 - CROSSTABS has been re-implemented to fix numerous bugs.
499 - EXAMINE: /MISSING=LISTWISE is now the default.
501 - DO REPEAT command has been reimplemented. Now, when DO REPEAT
502 contains an INCLUDE or INSERT command, substitutions are not
503 applied to the included file.
505 - FILE HANDLE has a new ENDS subcommand to select CR or CRLF new-lines.
507 - HOST has been updated to use more modern syntax.
509 - Most commands that work with data files now support a new
512 - MISSING VALUES can now assign missing values to long string
515 - ONEWAY: the POSTHOC subcommand is now implemented.
517 - The following new subcommands to NPAR TESTS have been implemented:
518 COCHRAN, FRIEDMAN, JONCKHEERE-TERPSTRA, KENDALL, KRUSKAL-WALLIS, MANN-WHITNEY,
519 MCNEMAR, SIGN, WILCOXON, and RUNS
521 - SET and SHOW no longer have ENDCMD, NULLINE, PROMPT, CPROMPT, and
522 DPROMPT subcommands. The defaults are now fixed values.
524 - SHOW now has a JOURNAL subcommand, to show the location of the
527 - VALUE LABELS can now assign value labels to long string
530 * Other language changes:
532 - The new DATASET commands replace the "scratch file" PSPP
533 extension, which is no longer supported.
535 - Strings may now include arbitrary Unicode code points specified
536 in hexadecimal, using the syntax U'hhhh'. For example, Unicode
537 code point U+1D11E, the musical G clef character, may be
538 expressed as U'1D11E'.
540 See the "Tokens" section in the PSPP manual for more information.
542 - In previous versions of PSPP, in a string expressed in
543 hexadecimal with X'hh' syntax, the hexadecimal digits expressed
544 bytes in the locale encoding. In this version of PSPP, X'hh'
545 syntax always expresses bytes in UTF-8 encoding.
547 See the "Tokens" section in the PSPP manual for more information.
549 * PSPPIRE graphical user interface improvements:
551 - Added support for non-ASCII characters in strings, labels and
554 - A "Split Window" function is available, which makes it easier to
555 see different parts of a large data file.
557 - Data files can now be opened by specifing their name as the first
558 argument. This means that on a properly configured desktop, double
559 clicking on an icon will open the file.
561 - Foreign formats, such as Gnumeric, OpenDocument and CSV can be imported
562 via using an "intelligent" application assistant dialog.
566 - The new "cairo" output driver supports output in PostScript, PDF,
567 and SVG formats. Its functionality is a superset of that of the
568 "postscript" driver, which has been removed. You must have Cairo
569 and Pango installed to build the "cairo" driver.
571 - Charts are now produced with Cairo and Pango, instead of libplot.
572 Without them, the new graphing features will not work. If you do
573 not have Cairo and Pango installed, you must run `configure' with
576 - The plain text output driver now properly supports multibyte UTF-8
577 characters, including double-width characters and combining
580 - Output to OpenDocument format is now supported.
582 - The HTML output is much improved.
584 * The "pspp" program has a new option --batch (or -b) that selects
585 "batch" syntax mode. In previous versions of PSPP this syntax mode
586 was the default. Now a new "auto" syntax mode is the default. In
587 "auto" mode, PSPP interprets most syntax files correctly regardless
588 of their intended syntax mode.
590 See the "Syntax Variants" section in the PSPP manual for more
593 * The "pspp" program has a new option --syntax-encoding that
594 specifies the encoding for syntax files listed on the command line,
595 as well as the default encoding for syntax files included with
596 INCLUDE or INSERT. The default is to accept the system locale
597 encoding, UTF-8, UTF-16, or UTF-32, automatically detecting which
598 one the system file uses.
600 See the documentation for the INSERT command in the PSPP manual for
603 * Text data files that PRINT and WRITE creates now use the system
604 native line ends by default (CRLF on Windows, LF only elsewhere).
605 Use the new ENDS subcommand on FILE HANDLE to override the default.
607 * A new Perl module allows Perl programs to read and write PSPP
610 * A tutorial chapter has been added to the user manual.
612 Changes from 0.6.1 to 0.6.2:
616 - Dutch, thanks to Harry Thijssen.
618 - Brazilian Portuguese, thanks to Michel Boaventura.
620 Thanks for translations are also due to the coordinators at
621 translationproject.org.
623 * Statistical bug fixes:
625 - REGRESSION: Report correct standard error of the estimate (bug
628 - T-TEST: Report correct significance of paired sample T-test in
629 the common case (bug #26936) and corner cases. Thanks to Mike
630 Griffiths and Matej Cepl for reporting these bugs.
632 * Build fixes and changes:
634 - Fix build with GTK+ 2.17.4 and later.
636 - Make running "make" after running "configure" with different
637 settings reliably rebuild version.c.
639 - Cygwin and MinGW build fixes.
641 - Fixes for building with recent gnulib.
643 - The Makefile now honors two new variables, PSPP_LDFLAGS and
644 PSPPIRE_LDFLAGS, that affect linking of the PSPP and PSPPIRE
645 binaries, respectively. This makes building easier for some
648 - Fixes for "configure --enable-relocatable" (bug #25508).
650 * Data file bug fixes and changes:
652 - Fix reading text data files that contain a mix of white space
653 and commas. Now "a ,b" is treated as two fields containing "a"
654 and "b"; previously it was treated as three, with an empty field
657 - Fix writing corrupted .sav files on Windows.
659 - Fix writing variable labels longer than 252 bytes to save files.
660 Thanks to Robert Westlund for reporting this bug.
662 - Fix writing corrupted .por files (bug #26034).
664 - Fix reading .por files whose initial lines are not padded out
665 with spaces as expected.
667 - PSPP will no longer issue warnings about some .sav file records
668 or values that it does not understand. These warnings were
669 harmless, but needlessly alarmed some users.
671 - Fix crash reading empty string fields from PostgreSQL databases.
673 * Bug fixes that affect PSPP and PSPPIRE:
675 - Users may now control precision of output statistics. Instead
676 of hard coding the width and decimals of output numbers, respect
677 the default format in most instances. Counts are now normally
678 displayed with the format of the weight variable, if any.
680 - Fix crash when an INSERT command specifies the name of a file
681 that does not exist (bug #24569).
683 - Fix crash when CROSSTABS specifies a long-string variable (bugs
686 - Fix crash drawing pie charts with many segments.
688 - Fix crash when NUMERIC specifies an invalid format.
690 * PSPPIRE bug fixes and changes:
692 - On Windows, write the output file to the user's home directory
693 instead of the current directory, to better match user
696 - Some data editor fixes.
700 - Fix typo in BINOMIAL section of user manual (bug #25892).
702 Changes from 0.6.0 to 0.6.1:
704 * Statistical bug fixes:
706 - Report correct standardized regression coefficients in linear
707 regression output (bug #23567).
709 * Bug fixes that affect PSPP and PSPPIRE:
711 - Avoid crash with pie charts (bug #24014).
713 - Don't append % to count totals (bug #24003).
715 - Don't crash on bad input (bug #24031).
717 - Don't crash if "end data." is not left aligned (bug #24115).
719 - Change default workspace value to 64 MB, to avoid unnecessary
720 disk accesses on modern machines.
724 - Add ".sav" or ".por" suffix to filename when saving with Save_As
727 - Make it possible to reopen the output window on Windows (bug
730 - A POSIX regular expression library is now included and used
731 automatically if the host does not have one or has one that is
734 * Build fixes and changes:
736 - Work around bug in GSL that prevented build with recent GCC
737 versions without manually adding -fgnu89-inline to CFLAGS.
739 - Also warn about missing prerequisites as we encounter them (bug
742 - Distribute necessary files to allow users working from the
743 distributed tarball to configure with --enable-gui-tools.
745 - Append $(EXEEXT_FOR_BUILD) to output file name when building
746 q2c, fixing build problems on Windows.
748 - GSL 1.8 or later is now required.
750 - Build errors with --enable-relocatable were fixed.
752 * The German translations were removed, since native German speakers
753 found them too poor to be useful.
755 Changes from 0.4.0 to 0.6.0:
757 * The PSPP license is now version 3 or later of the GNU General
758 Public License. Previously, it was version 2 or later.
760 * PSPP now has a graphical interface, called PSPPIRE. This
761 interface allows you to enter data and variable definitions
762 interactively. Commands may be executed in syntax form, or by
763 using the interactive dialog boxes available from the dropdown
766 * A few sample syntax files are now included in the `examples'
769 * Numerous major and minor bugs have been fixed.
773 * The INSTALL file now reflects the details of how to install
774 PSPP. It is a tailored version of the generic installation
775 instructions, instead of a verbatim copy.
777 * iconv, which is ordinarily installed as part of a Unix-like
778 system, is now required. If you don't have it already, you can
779 install GNU libiconv (http://www.gnu.org/software/libiconv/).
781 * libxml2 and zlib are new optional dependencies. They are
782 required to use PSPP's support for reading Gnumeric files.
784 Statistical procedure changes:
786 * REGRESSION is a new procedure for fitting linear models to data
787 via least-squares estimation.
789 * NPAR TESTS is a new procedure for non-parametric tests. In this
790 release, it supports binomial and chi-square tests.
792 * RANK is a new procedure to rank variables. It supports numerous
795 * FREQUENCIES can now output histograms and pie charts. These
796 features were present in earlier releases, but not documented.
798 User interface changes:
800 * In many situations where PSPP once terminated with a fatal
801 error, PSPP now recovers and continues execution.
803 * PSPP is now able to start up and run even if it cannot find its
806 * Journaling of interactive commands to a disk file is now
807 implemented. By default, journaling is enabled, to a file named
808 `pspp.jnl' in the current directory. SET JOURNAL may be used to
811 * The use of `+' between syntax file names on the command line to
812 prevent the dictionary from being cleared between their
813 executions is no longer supported. All syntax files are now
814 executed as if `+' had been specified.
816 * The -d/--define and -u/--undef command line options are no
817 longer supported. Instead, use /usr/bin/env or shell primitives
818 to define or clear environment variables before invoking PSPP.
820 * If a syntax file named named `rc' is found in a configuration
821 directory (such as $HOME/.pspp), it is executed before any
822 syntax file specified on the command line. The -r or
823 --no-statrc command line option may be used to disable this
828 * Output configuration options have changed. Please refer to the
829 manual for a full description of the available options.
831 In consequence, you will need to reinstall your "devices" file.
832 "make install" will do this for you.
834 * Most error messages are now written to PSPP output files by
835 default. SET ERROR can be used to disable this behavior.
837 * When invoked interactively, PSPP now by default produces output
838 on the terminal, piping it through the "more" program.
839 Previously, by default output was written only to file
840 pspp.list. On most terminals, the page length used for output
841 automatically adapts to the terminal size, even if the terminal
846 - This driver now supports charts in output. Charts are written
847 as separate files that the main output file refers to. By
848 default, charts are written in PNG format to files named
849 pspp-1.png, pspp-2.png, and so on.
851 - Configurations are provided that use VT100 (and xterm)
852 line-drawing characters in tables. The option "-o list-vt100"
853 requests use of this device for output to pspp.list.
857 - The default paper size is now determined using the PAPERSIZE
858 environment variable, or the LC_PAPER locale category on
859 systems that support it. If these are not set, the default is
860 now A4, instead of US letter. To make US letter the default,
861 set PAPERSIZE to "letter" in your environment.
863 - Font metrics are now read from AFM files, instead of
864 Groff-format metrics files. PostScript fonts can now be
867 In consequence, you will need to install an AFM file for each
868 font used in PostScript output. "make install" will install
869 AFM files for the standard PostScript fonts, including the
870 ones that the PostScript driver uses by default.
872 - Standard paper sizes no longer need to be specified through a
873 configuration file. The "papersize" configuration file is no
874 longer needed, or supported.
876 - The PostScript prologue is no longer obtained from the
877 "ps-prologue" configuration file. This configuration file is
878 no longer needed, or supported.
882 - The HTML prologue is no longer obtained from the
883 "html-prologue" configuration file. This configuration file
884 is no longer needed, or supported.
886 Command language changes:
888 * The following commands are new:
890 - GET DATA, which currently supports reading Gnumeric files and
891 text data files. It will be extended later to read other
892 types of foreign data.
894 - CD, to change the current directory.
896 - INSERT, to execute a syntax file.
898 - DELETE VARIABLES, to remove variables from the active file
901 - ADD DOCUMENT, to add text to active file documents.
903 - CLOSE FILE HANDLE (a PSPP extension; see below).
905 - XEXPORT, a PSPP extension that is a transformation equivalent
908 * The following functions for transformation expressions are new:
910 - DATEDIFF, for computing the difference of two dates.
912 - DATESUM, for advancing a date by a specified duration.
914 - VALUELABEL, to obtain the value label for a value.
916 * PSPP now supports very long string variables (over 255 bytes
919 * MATCH FILES now supports the FIRST and LAST subcommands.
921 * Previous versions of PSPP prohibited using commands to both read and
922 write a single file at the same time. Now, PSPP allows this, and
923 the new version of the file atomically replaces the old version.
925 * The following commands are no longer available. They will be
926 re-implemented in a later release:
928 - CLEAR TRANSFORMATIONS
934 * The PROCESS IF command, which was deprecated, has been removed.
935 You may replace any usage of it by SELECT IF following
936 TEMPORARY, which has the same effect.
938 * The output format for variables created by VECTOR may now be
939 specified as part of the VECTOR syntax.
941 "Scratch files", a new PSPP extension:
943 A scratch file, like a system file, consists of a dictionary and
944 any number of cases. Small scratch files are stored in memory;
945 one that grows too large is written to disk. By default, any file
946 handle whose name begins with # is assumed to refer to a scratch
949 Scratch files can be used just about anywhere a system or portable
950 file can be used. Also, portable files are now allowed in most
951 places that system files were allowed in previous PSPP version.
953 A new CLOSE FILE HANDLE command allows the storage associated with
954 scratch files to be freed. It also allows file handles to be
955 reassigned to new files.
957 For more information on scratch files, refer to the "File Handles"
958 section in the PSPP manual. For specifics of what commands now
959 allow what kinds of files to be specified, refer to the
960 documentation on those particular commands.
964 * Binary formats and IBM/360 formats, including ASCII/EBCDIC
965 translation, are now supported. Use FILE HANDLE to specify the
966 format of these files.
968 * Little-endian, big-endian, and VAX-endian formats are now
969 supported for integer binary formats when reading and writing
970 data files. The new RIB and WIB subcommands on the SET command
971 control endianness of integer data. The default is the host's
974 * IEEE 754, VAX, and IBM hexadecimal formats are now supported for
975 floating point binary formats when reading and writing data
976 files. The new RRB and WRB subcommands on the SET command
977 control the floating point format. The default is the host's
978 native floating point format.
980 * DATA LIST now supports the SKIP subcommand, to skip records at
981 the beginning of a file. For compatibility, DATA LIST now
982 treats N format as F format for FREE and LIST format input.
984 * The SAVE and XSAVE commands now support the UNSELECTED,
985 PERMISSIONS, NAMES, and MAP subcommands.
987 * The EXPORT command has been re-implemented to obtain better
988 results. Support for the UNSELECTED, DIGITS, and TYPE
989 subcommands has been added.
991 * For compatibility, PRINT now inserts a space at the beginning of
992 every output line, even lines that would otherwise be blank,
993 when OUTFILE is specified. (The behavior of WRITE is
996 * For compatibility, PRINT EJECT now inserts the digit `1' at the
997 beginning of each line that should begin a new page.
999 * For compatibility, WRITE now outputs the system-missing value as
1000 a field filled with spaces. Binary formats are an exception.
1001 (The behavior of PRINT is unchanged.)
1005 * Input and output format descriptions have been rewritten. They
1006 now precisely describe what is accepted on input and written on
1009 * The descriptions of the PSPP system and portable file formats
1010 have been extensively revised and improved.
1012 For developers, the build system now requires Autoconf 2.60 and
1015 Changes from 0.3.0 to 0.4.0:
1017 Changes in build dependencies:
1019 * The GNU Scientific Library (libgsl), version 1.6 or later, is
1022 * libplot from GNU plotutils is optional. Without it, the new
1023 graphing features will not work. If you do not have it
1024 installed, you must run `configure' with --without-libplot.
1026 * libgmp2 is no longer a dependency.
1028 Newly implemented commands and statistical features:
1030 * EXAMINE, including its graphing features.
1032 * FREQUENCIES now supports percentiles.
1040 * SORT CASES now sorts stably, that is, two cases with equal sort
1041 criteria will be in the same relative order before and after the
1044 * T-TEST (re-written).
1046 * DATE and USE. These commands are parsed but otherwise ignored,
1047 to enhance compatibility with certain command files that invoke
1050 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
1051 currently have no effect on PSPP output, but their values are
1052 written to and read from system files and thus may affect
1053 third-party software.
1055 * SET EPOCH implemented.
1057 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
1060 * FILE HANDLE now supports custom tab widths.
1062 Long variable names (and other identifiers) are now supported. Up
1063 to the first 64 bytes of each identifier is significant. PSPP now
1064 reads and writes system files compatible with SPSS version 12.
1066 New --algorithm and --syntax command line options allow
1067 SPSS-compatible or enhanced modes to be selected.
1069 Support for transformation expressions has been rewritten and
1070 significantly improved. Refer to the manual for details.
1072 Calculation of moments (mean, standard deviation, kurtosis,
1073 skewness) has been rewritten and should now be more accurate. In
1074 --algorithm=enhanced mode moments may be more accurate than SPSS in
1077 Numerous bugs have been fixed, too many to mention here. Many new
1078 tests have been added, leading to the discovery and fixing of many
1081 The ASCII output driver can now squeeze multiple blank lines into
1084 Much of the code has been rewritten and refactored. It is now much
1087 The FILE TYPE and REPEATING DATA commands have been disabled for
1088 this release because their implementations were deemed too buggy to
1089 be useful. They will be fixed and replaced in a future release.
1091 New pspp-mode for Emacs (in pspp-mode.el).
1093 Added rudimentary command-line completion for interactive input.
1095 lib/julcal and lib/dcdflib are no longer used, so they have been
1098 For developers, the build system now requires Autoconf 2.58 and
1099 Automake 1.7. The included gettext has been updated to version
1102 Some reports state that Texinfo 4.8, the latest version, may be
1103 necessary to successfully format the documentation on some systems.
1105 Version 0.3.0 changes since 0.2.3:
1109 * Using alphanumeric variables in functions under AGGREGATE
1112 * Under certain circumstances, the final case would be omitted
1113 from the results of an AGGREGATE operation. Fixed.
1115 * Undefined behavior was invoked by referencing a freed pointer
1116 under certain circumstances. Fixed.
1118 * A wrong record size was displayed when paging the active file to
1121 * Not having enough temporary space for sorting caused a core
1124 * Syntax errors in function descriptions on AGGREGATE caused core
1127 * A null pointer was dereferenced, causing a core dump, when
1128 PERCENTILES was specified on FREQUENCIES. This fixes the
1129 problem, but PSPP still doesn't calculate percentiles.
1131 * SORT always sorted in ascending order. Fixed.
1133 * Some minor memory leaks in the expression parser were removed.
1135 * Many assertions fixed for strict ANSI C compliance.
1139 * SET ECHO ON now implemented, but turned off by default.
1141 * PRINT specifier supported on END REPEAT.
1145 * System libgmp2 library is used if installed instead of
1146 unconditionally using the included libgmp2 subset.
1148 * Extensive code cleanup, which continues.
1150 * Added CORRELATIONS command parser, but not implemented.
1152 Version 0.2.3 changes since 0.2.2:
1156 * SPLIT FILE with a string variable caused a core dump. Fixed.
1158 * Nested INCLUDEs didn't work. Fixed.
1160 * The MATCH FILES procedure set the values of variables not present
1161 to 0. It should have been SYSMIS. This is now fixed.
1163 * The REMARK command was too aggressive about skipping lines. It
1164 didn't like being the last command in a file.
1166 * Comment parsing wasn't consistent with the rest of the code in its
1167 idea of where one command ends and another starts. This meant
1168 that sometimes commands would be mysteriously ignored. Thanks to
1169 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
1171 * The TABLE subcommand on MATCH FILES worked only erratically at
1172 best. This fixes it. Thanks to Dr. Dirk Melcher
1173 <BZN-mdksh@t-online.de> for reporting this bug.
1175 * VARIABLE LABELS rejected a slash before the first variable
1176 specification, contradicting the documentation. Thanks to Walter
1177 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1179 * Because of an incorrect optimization in memory allocation,
1180 CROSSTABS sometimes segfaulted when asked to output multiple
1181 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1184 * CROSSTABS didn't display value labels for column and row
1185 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1188 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1189 <BZN-mdksh@t-online.de> for reporting this bug.
1191 * The TABLE subcommand on MATCH FILES worked only erratically at
1192 best. This fixes it. Thanks to Dr. Dirk Melcher
1193 <BZN-mdksh@t-online.de> for reporting this bug.
1195 * VARIABLE LABELS rejected a slash before the first variable
1196 specification, contradicting the documentation. Thanks to Walter
1197 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1199 * Because of an incorrect optimization in memory allocation,
1200 CROSSTABS sometimes segfaulted when asked to output multiple
1201 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1204 * CROSSTABS didn't display value labels for column and row
1205 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1208 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1209 <BZN-mdksh@t-online.de> for reporting this bug.
1211 * MATCH FILES corrupted memory and dumped core on some syntax
1214 * MATCH FILES should set numeric values not available to the
1215 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
1216 <BZN-mdksh@t-online.de> for reporting this bug.
1218 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
1219 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
1223 * Some systems didn't like the way open_file was coded. Thanks to
1224 Hankin <hankin@rogue.consultco.com> for pointing this out.
1226 * The SAVE procedure didn't save long string variables properly.
1227 Fixed by this patch. Thanks to Hankin
1228 <hankin@rogue.consultco.com> for this patch.
1230 * Minor documentation fixes for MATCH FILES.
1232 Version 0.2.2 changes since 0.2.1:
1236 * Fix behavior of PRINT SPACE for negative arguments.
1238 * Fix reading some unusual system files.
1240 * Fix LIST problems with very long variables. Thanks to Hankin
1241 <hankin@dunno.com> for this bug report.
1243 * Fix problems with some string format specifiers.
1245 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
1246 <BZN-mdksh@t-online.de> for reporting this bug.
1248 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
1249 Hankin <hankin@dunno.com> again on this one.
1251 * Sometimes you may encounter a PSPP script that has to be
1252 interpreted in interactive mode. Now you can use the -i flag to
1255 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
1256 `unused variable' warnings under gcc 2.7.2.3, fixing this will
1261 * The files in gmp need the internationalization directory in
1262 their include path. Thanks to OKUJI Yoshinori
1263 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
1265 Version 0.2.1 changes since 0.2.0:
1269 * Remember to include examples/ directory in distribution :-)
1271 * Fixed gmp compile problems for some non-i386 architectures.
1272 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
1275 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
1276 matches the documented behavior exactly, and error messages are
1277 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
1279 Version 0.2.0 changes since 0.1.0:
1281 Procedures now implemented:
1282 * CROSSTABS. Please see documentation for caveats.
1284 Transformations and utilities now implemented:
1287 * CLEAR TRANSFORMATIONS
1288 * DISPLAY (all subcommands).
1299 Support for input and output through pipes: "|command" and
1300 "command|" filenames; support for special filenames "-", "stdin",
1303 New command-line features:
1304 * New option --testing-mode: Invoke heuristics to assist testing.
1305 * New option --safer, -s: Don't allow certain unsafe operations.
1306 * New option --command=CMD, -c CMD: Perform literal command CMD.
1307 * rc file ~/.pspp/rc is executed before any other files.
1308 * Now multiple syntax files can be specified.
1310 Operator LAG is now implemented.
1312 Added missing FILE subcommand to REREAD.
1314 Table output manager completely rewritten.
1316 Device configuration file syntax changed. You will need to
1317 reinstall your `devices' file.
1319 New output driver for HTML.
1321 PostScript driver and prologue simplified.
1323 Many bugs fixed. General source-code cleanup.
1325 Added Texinfo documentation for:
1326 * PSPP system file format
1327 * PSPP portable file format
1328 * How to write input for q2c parser generator
1331 PSPP language is now fully documented. Please report any
1332 inaccuracies or omissions in the documentation.
1334 Changes for version 0.1.0:
1336 First public release. For changes from unreleased development
1337 versions, please see ONEWS.
1339 ----------------------------------------------------------------------
1340 Copyright information:
1342 Permission is granted to anyone to make or distribute verbatim
1343 copies of this document as received, in any medium, provided that
1344 the copyright notice and this permission notice are preserved, thus
1345 giving the recipient permission to redistribute in turn.
1347 Permission is granted to distribute modified versions of this
1348 document, or of portions of it, under the above conditions,
1349 provided also that they carry prominent notices stating who last
1353 version-control: never