1 PSPP NEWS -- history of user-visible changes.
2 Copyright (C) 1996-2000, 2008-2016, 2017, 2019, 2020 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 * PSPP can now write its results directly to a TeX source file.
11 * Added Drag-N-Drop in output view.
13 * The Explore GUI dialog supports the "Plots" subdialog. Boxplots, Q-Q Plots
14 and Spreadlevel plots are now also available via the GUI.
16 * The graphical user interface for importing spreadsheets has been improved.
17 The new interface provides the user with a preview of the data to be imported
18 and interactive methods to select the desired ranges.
20 * New features in pspp-output:
22 - New --table-look and --nth-commands options.
24 - New get-table-look command.
26 Changes from 1.4.0 to 1.4.1:
30 * Translation updates.
32 * HTML output is now HTML5 instead of HTML4.0 Transitional.
34 * The HOST command has been reimplemented. It now supports TIMELIMIT.
36 Changes from 1.2.0 to 1.4.0:
38 * The file pspp-mode.el (the pspp-mode for Emacs) is no longer distributed
39 with PSPP. Instead, it can be installed directly in emacs and is available
40 from https://elpa.gnu.org/packages/pspp-mode.html
42 * The Find dialog box, when searching for numeric values, will match only
43 to the precision of the variable's print format. This avoids behaviour
44 which is surprising to some users.
46 * PSPP now supports the SPSS viewer (.spv) format that SPSS 16 and later
47 use to save the contents of its output editor:
49 - PSPP and PSPPIRE can write output to .spv files.
51 - The new utility pspp-output can convert .spv files to other formats.
53 - The pspp-convert utility can now decrypt encrypted .spv files. The
54 encrypted viewer file format is unacceptably insecure, so to
55 discourage its use PSPP and PSPPIRE do not directly read or write
58 * A bug where the Data|Select Cases|Random Sample menu would generate
59 invalid syntax has been fixed.
61 * FREQUENCIES will emit a warning if one or more weight values are missing.
63 * Plain text output is no longer divided into pages, since it is now
64 rarely printed on paper.
66 * pspp-convert improvements:
68 - New "-a", "-l", "--password-list" options to search for an
69 encrypted file's password.
71 - New "--keep" and "--drop" options to output only selected variables.
73 - New "--recode", "--no-var-name", "--labels", "--print-formats",
74 "--decimal", "--delimiter", and "--qualifier" options to control
77 * Improvements to SAVE DATA COLLECTION support for MDD files.
79 * Bug fix for CVE-2018-20230.
81 * The /RENAME subcommand in SAVE TRANSLATE et al. has been extended
82 to support the syntax also accepted by other software.
84 * The EXAMINE command will now perform the Shapiro-Wilk test when
85 one or more plots are requested.
87 * The REGRESSION command now supports the /STATISTICS=TOL option which
88 outputs tolerance and variance inflation factor metrics for the data.
90 * The QUICK CLUSTER command now supports the /SAVE option which can
91 be used to save the cases' cluster membership and/or their distance
92 from the cluster centre to the active file.
94 * The MEANS command has been re-implemented.
96 * The GUI now has a sub-dialog for post-hoc tests of the oneway
99 * Gtk+3.22.0 or later must now be used when building.
101 * GRAPH: Categorical barcharts displaying percentages now show the
102 sub-category as a percentage of the primary category instead of the
105 * The Syntax Window now has a Find function to perform simple text
110 - The PRINT subcommand is now implemented.
114 Changes from 1.0.1 to 1.2.0:
116 * New experimental command SAVE DATA COLLECTION to save MDD files.
118 * MTIME and YMDHMS variable formats now supported.
122 - zlib is now a required dependency. (Previously it was optional.)
124 - Gtk+3.18.0 or later must now be used when building.
126 - The code implementing the sheet rendering has been removed. Instead we
127 use a third party library: spread-sheet-widget.
129 * The "NOMISSING" keyword when generating syntax for piecharts in the
130 frequencies command was omitted. This has been corrected.
132 Changes from 1.0.0 to 1.0.1:
134 * Bug fixes, including fixes for CVE-2017-12958, CVE-2017-12959,
135 CVE-2017-12960, and CVE-2017-12961.
137 Changes from 0.11.0 to 1.0.0:
139 * Translation updates.
141 Changes from 0.10.2 to 0.11.0:
143 * The REGRESSION command now has a /ORIGIN subcommand to perform
144 regression through the origin.
146 * The FACTOR command can now analyse matrix files prepared with MATRIX DATA.
148 * The FACTOR command can now print the anti-image matrices.
150 * The MATRIX DATA command has been added.
152 * Some inappropriate properties in selection dialogs have been corrected.
154 * A bug which could cause the HTML driver to go into a tight loop
157 * An error in the FREQUENCIES procedure, where the word "Mean" was
158 printed when "Variance" was appropriate has been fixed.
160 * The ncurses library is no longer required or used.
162 * A bug where the Mann-Whitney test would give misleading results
163 if run on multiple variables and MISSING=ANALAYSIS was specified
166 * Gtk+3.14.5 or later must now be used when building.
168 * Graphical user interface changes:
170 ** There is a new menu: Edit|Options
172 ** The Non Parametric Statistics Menu has a new item: "K Independent Samples".
174 ** Dialog boxes can now be canceled using the <Escape> key.
176 * The AUTORECODE command now accepts an optional / before INTO.
178 * The short form of the VECTOR command can now create string variables.
180 * Bug fixes, including fixes for CVE-2017-10791 and CVE-2017-10792.
182 Changes from 0.10.1 to 0.10.2:
184 * CROSSTABS implements a new COUNT subcommand to round case or cell
187 * Help will be opened as HTML in default browser if yelp
190 * When plotting scatterplots with only one dataset (the simple case)
191 the colour used for the dataset is now black. The previous default
192 from the Tango palette was too faint to see easily.
194 * The varible info dialog could previously only paste a single variable.
195 Now it can paste multiple variables.
197 * Bug fixes, including the following:
199 - T-test with independent samples GUI crashed with string
200 type variable as group variable.
202 - The variable info dialog showed the previous selected variable
203 superimposed with the currently selected one.
205 - The GLM command did not properly deal with missing values. This
208 Changes from 0.10.0 to 0.10.1:
210 * Bug fixes, including the following:
212 - A bug where certain dialog boxes could not be properly populated
215 - Various commands have been hardened against errors when called
218 * Translation updates. Thanks to our translators!
220 Changes from 0.8.5 to 0.10.0:
222 * The QUICK CLUSTER command has a /PRINT subcommand which shows
223 the initial cluster centres and the final cluster membership of
224 each case. The clustering algorithm has also been updated, so
225 as to produce better separated clusters.
227 * A Russian localisation has been contributed.
229 * The GRAPH command now has a /BAR subcommand to draw barcharts.
231 * If the DECIMAL character is set to COMMA then the ',' character
232 will not be treated as a separator by DATA LIST.
234 * The graphical user interface (psppire) has been changed as follows:
236 - It now uses Gtk+ version 3 instead of version 2. Accordingly, it has a
237 somewhat different look and feel.
239 - There is now a Graphs menu to access the GRAPH command.
241 - The status of dialog box widgets are now preserved between calls
242 to the same dialog box for the same dataset.
244 - The dialog box for the Logistic Regression command will now
245 infer that string variables or any varible with a "measure"
246 of Nominal or Ordinal are to be treated as categorical variables
247 and will generate syntax accordingly.
249 * The pspp-convert utility can now decrypt encrypted syntax files.
250 The encrypted syntax file format is unacceptably insecure, so to
251 discourage its use PSPP and PSPPIRE do not directly read or write
258 * The following functions for transformation expressions are new:
260 - REPLACE, for search-and-replace of one string with another.
262 - STRUNC, to truncate a string and trim trailing spaces.
264 - MEDIAN, to compute the median of its arguments.
266 - The TRUNC function in expressions now supports additional arguments
267 for truncating to values other than integers and to indicate a level
268 of rounding fuzz. The default rounding fuzz may now be controlled
269 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
271 * Bug fixes, including the following notable ones:
273 - The correlation coefficient in the paired samples t-test
274 procedure is now correctly calculated when presented with
277 - The ESCAPE subcommand has been removed from GET DATA /TYPE=TXT.
278 For compatibility, the behavior that ESCAPE enabled is now the
279 default and only supported behavior.
281 - Rendering of the variable and data sheets in right-to-left locales
284 - The Mann-Whitney test, when run on a dataset containing values
285 of the group variable, other than those defining the test groups,
286 would incorrectly calculate the ranks. This has been corrected.
288 * The IMPORTCASES subcommand on GET DATA is now ignored, for
291 Changes from 0.8.4 to 0.8.5:
293 * The FREQUENCIES and CROSSTABS commands can now generate barcharts.
295 * The FACTOR command can now perform PROMAX rotations.
297 * SPSS/PC+ system files are now supported on GET and other commands
298 that read SPSS system files. The pspp-convert program can now read
299 SPSS/PC+ system files. Writing the obsolete SPSS/PC+ system file
300 format is not supported.
302 * SYSFILE INFO can now read SPSS/PC+ system files and SPSS portable
305 * FREQUENCIES: A bug was fixed where an assertion failure occurred
306 when an empty dataset was presented.
308 * The GRAPH command is now available. Initially it supports
309 scatterplots and histograms.
311 * The RND operator in expressions now supports additional operands
312 for rounding to values other than integers and to indicate a level
313 of rounding fuzz. The default rounding fuzz may now be controlled
314 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
316 Changes from 0.8.3 to 0.8.4:
318 * Formatting of SYSFILE INFO output was made easier to read.
320 * Bug fixes, including the following notable ones:
322 - FREQUENCIES works properly for string variables. (This bug was
323 introduced in 0.8.2.)
325 - CROSSTABS now correctly computes all of the measures that it
326 offers. Some measures have been removed because they were not
329 - The NPAR TESTS calculation of significance for the RUNS
330 subcommand has been corrected.
332 - Planned comparisons in ONEWAY ANOVA now correctly handle negative
335 - The COUNT command now correctly treats missing values as
338 - Conformance fixes to Open Document output format.
340 Changes from 0.8.2 to 0.8.3:
342 * Independent T-Tests displayed the standard error of the difference
343 and the confidence interval for the unequal variances case, where
344 the equal variances case should have been. This has been fixed.
346 * REGRESSION now recognises /STATISTICS=CI(x) which causes confidence
347 intervals for the coefficients to be printed.
349 * When DESCRIPTIVES calculates Z scores, it now omits cases filtered
350 by the current FILTER settings.
352 * PSPPIRE graphical user interface improvements:
354 - Dialog boxes with source variable lists can now choose the sort
355 order; right click and select from the popup menu.
357 - File|Open now allows an encoding to be selected for opening
360 - File|Display Data File Information|External File... now allows an
361 encoding to be selected.
363 - A problem with the Means dialog has been resolved (bug #41433).
365 - Several problems related to the input of spreadsheets have been
366 fixed (bug #41657, #41620
368 * System file related improvements:
370 - With ENCODING="DETECT", SYSFILE INFO can now help the user to
371 pick an encoding for reading a system file that does not identify
374 - SYSFILE INFO now accepts an ENCODING subcommand to specify the
375 character encoding of string data in the system file.
377 - Variable labels over 255 bytes long are now accepted without
378 truncation (bug #41863).
380 - System files that contain duplicate variable names may now be
381 read successfully (bug #41475).
383 Changes from 0.8.1 to 0.8.2:
385 * Charts are now rendered with colours from the Tango palette instead
386 of fully saturated primaries.
388 * Support for new system file variants:
390 - PSPP can now read and write ZCOMPRESSED system files, which
391 compress data much more effectively than older "compressed"
392 files. (The older format is still supported.)
394 - PSPP can now decrypt encrypted system files, using the new
395 pspp-convert utility. The encrypted system file format is
396 unacceptably insecure, so to discourage its use PSPP and PSPPIRE
397 do not directly read or write this format.
399 * Missing values for long string variables are now read from and
400 written to system files in an SPSS-compatible fashion.
402 (Earlier versions of PSPP that supported missing values for long
403 string variables wrote them to system files in an SPSS-incompatible
404 way. To fix the problem, read the system file with this version of
405 PSPP and then save a new copy of it.)
407 * pspp-convert, a new standalone utility for converting SPSS system
408 and portable files to other formats, is now included. The initial
409 version supports comma-separated value files as output format.
410 pspp-convert can also decrypt encrypted system files.
414 - zlib is now a required dependency. (Previously it was optional.)
416 Changes from 0.8.0 to 0.8.1:
422 * Changes to existing commands:
424 - CROSSTABS: The requirement that one expected count must be less than five
425 before Fishers Exact Test will be reported has been removed.
427 * PSPPIRE graphical user interface improvements:
429 - A new set of icons has been contributed.
431 - Syntax windows now parse syntax in "auto" mode, which in practice
432 should mean that both "batch" and "interactive" syntax now works,
433 instead of just "interactive" syntax.
435 - The variable pane of data windows now include a Role column.
439 - System files written by IBM SPSS 21 are now read without warnings.
441 - System files written by "VOXCO INTERVIEWER 4.3" are now read
444 - PSPPIRE should now more gracefully handle syntax files that contain
447 Changes from 0.6.2 to 0.8.0:
453 - DATAFILE ATTRIBUTES
460 - LOGISTIC REGRESSION
464 - PRESERVE and RESTORE
468 - SAVE TRANSLATE to CSV and tab-delimited files
470 - VARIABLE ATTRIBUTES
472 * Changes to existing commands:
474 - AUTORECODE has a new GROUP subcommand.
476 - CROSSTABS has been re-implemented to fix numerous bugs.
478 - EXAMINE: /MISSING=LISTWISE is now the default.
480 - DO REPEAT command has been reimplemented. Now, when DO REPEAT
481 contains an INCLUDE or INSERT command, substitutions are not
482 applied to the included file.
484 - FILE HANDLE has a new ENDS subcommand to select CR or CRLF new-lines.
486 - HOST has been updated to use more modern syntax.
488 - Most commands that work with data files now support a new
491 - MISSING VALUES can now assign missing values to long string
494 - ONEWAY: the POSTHOC subcommand is now implemented.
496 - The following new subcommands to NPAR TESTS have been implemented:
497 COCHRAN, FRIEDMAN, JONCKHEERE-TERPSTRA, KENDALL, KRUSKAL-WALLIS, MANN-WHITNEY,
498 MCNEMAR, SIGN, WILCOXON, and RUNS
500 - SET and SHOW no longer have ENDCMD, NULLINE, PROMPT, CPROMPT, and
501 DPROMPT subcommands. The defaults are now fixed values.
503 - SHOW now has a JOURNAL subcommand, to show the location of the
506 - VALUE LABELS can now assign value labels to long string
509 * Other language changes:
511 - The new DATASET commands replace the "scratch file" PSPP
512 extension, which is no longer supported.
514 - Strings may now include arbitrary Unicode code points specified
515 in hexadecimal, using the syntax U'hhhh'. For example, Unicode
516 code point U+1D11E, the musical G clef character, may be
517 expressed as U'1D11E'.
519 See the "Tokens" section in the PSPP manual for more information.
521 - In previous versions of PSPP, in a string expressed in
522 hexadecimal with X'hh' syntax, the hexadecimal digits expressed
523 bytes in the locale encoding. In this version of PSPP, X'hh'
524 syntax always expresses bytes in UTF-8 encoding.
526 See the "Tokens" section in the PSPP manual for more information.
528 * PSPPIRE graphical user interface improvements:
530 - Added support for non-ASCII characters in strings, labels and
533 - A "Split Window" function is available, which makes it easier to
534 see different parts of a large data file.
536 - Data files can now be opened by specifing their name as the first
537 argument. This means that on a properly configured desktop, double
538 clicking on an icon will open the file.
540 - Foreign formats, such as Gnumeric, OpenDocument and CSV can be imported
541 via using an "intelligent" application assistant dialog.
545 - The new "cairo" output driver supports output in PostScript, PDF,
546 and SVG formats. Its functionality is a superset of that of the
547 "postscript" driver, which has been removed. You must have Cairo
548 and Pango installed to build the "cairo" driver.
550 - Charts are now produced with Cairo and Pango, instead of libplot.
551 Without them, the new graphing features will not work. If you do
552 not have Cairo and Pango installed, you must run `configure' with
555 - The plain text output driver now properly supports multibyte UTF-8
556 characters, including double-width characters and combining
559 - Output to OpenDocument format is now supported.
561 - The HTML output is much improved.
563 * The "pspp" program has a new option --batch (or -b) that selects
564 "batch" syntax mode. In previous versions of PSPP this syntax mode
565 was the default. Now a new "auto" syntax mode is the default. In
566 "auto" mode, PSPP interprets most syntax files correctly regardless
567 of their intended syntax mode.
569 See the "Syntax Variants" section in the PSPP manual for more
572 * The "pspp" program has a new option --syntax-encoding that
573 specifies the encoding for syntax files listed on the command line,
574 as well as the default encoding for syntax files included with
575 INCLUDE or INSERT. The default is to accept the system locale
576 encoding, UTF-8, UTF-16, or UTF-32, automatically detecting which
577 one the system file uses.
579 See the documentation for the INSERT command in the PSPP manual for
582 * Text data files that PRINT and WRITE creates now use the system
583 native line ends by default (CRLF on Windows, LF only elsewhere).
584 Use the new ENDS subcommand on FILE HANDLE to override the default.
586 * A new Perl module allows Perl programs to read and write PSPP
589 * A tutorial chapter has been added to the user manual.
591 Changes from 0.6.1 to 0.6.2:
595 - Dutch, thanks to Harry Thijssen.
597 - Brazilian Portuguese, thanks to Michel Boaventura.
599 Thanks for translations are also due to the coordinators at
600 translationproject.org.
602 * Statistical bug fixes:
604 - REGRESSION: Report correct standard error of the estimate (bug
607 - T-TEST: Report correct significance of paired sample T-test in
608 the common case (bug #26936) and corner cases. Thanks to Mike
609 Griffiths and Matej Cepl for reporting these bugs.
611 * Build fixes and changes:
613 - Fix build with GTK+ 2.17.4 and later.
615 - Make running "make" after running "configure" with different
616 settings reliably rebuild version.c.
618 - Cygwin and MinGW build fixes.
620 - Fixes for building with recent gnulib.
622 - The Makefile now honors two new variables, PSPP_LDFLAGS and
623 PSPPIRE_LDFLAGS, that affect linking of the PSPP and PSPPIRE
624 binaries, respectively. This makes building easier for some
627 - Fixes for "configure --enable-relocatable" (bug #25508).
629 * Data file bug fixes and changes:
631 - Fix reading text data files that contain a mix of white space
632 and commas. Now "a ,b" is treated as two fields containing "a"
633 and "b"; previously it was treated as three, with an empty field
636 - Fix writing corrupted .sav files on Windows.
638 - Fix writing variable labels longer than 252 bytes to save files.
639 Thanks to Robert Westlund for reporting this bug.
641 - Fix writing corrupted .por files (bug #26034).
643 - Fix reading .por files whose initial lines are not padded out
644 with spaces as expected.
646 - PSPP will no longer issue warnings about some .sav file records
647 or values that it does not understand. These warnings were
648 harmless, but needlessly alarmed some users.
650 - Fix crash reading empty string fields from PostgreSQL databases.
652 * Bug fixes that affect PSPP and PSPPIRE:
654 - Users may now control precision of output statistics. Instead
655 of hard coding the width and decimals of output numbers, respect
656 the default format in most instances. Counts are now normally
657 displayed with the format of the weight variable, if any.
659 - Fix crash when an INSERT command specifies the name of a file
660 that does not exist (bug #24569).
662 - Fix crash when CROSSTABS specifies a long-string variable (bugs
665 - Fix crash drawing pie charts with many segments.
667 - Fix crash when NUMERIC specifies an invalid format.
669 * PSPPIRE bug fixes and changes:
671 - On Windows, write the output file to the user's home directory
672 instead of the current directory, to better match user
675 - Some data editor fixes.
679 - Fix typo in BINOMIAL section of user manual (bug #25892).
681 Changes from 0.6.0 to 0.6.1:
683 * Statistical bug fixes:
685 - Report correct standardized regression coefficients in linear
686 regression output (bug #23567).
688 * Bug fixes that affect PSPP and PSPPIRE:
690 - Avoid crash with pie charts (bug #24014).
692 - Don't append % to count totals (bug #24003).
694 - Don't crash on bad input (bug #24031).
696 - Don't crash if "end data." is not left aligned (bug #24115).
698 - Change default workspace value to 64 MB, to avoid unnecessary
699 disk accesses on modern machines.
703 - Add ".sav" or ".por" suffix to filename when saving with Save_As
706 - Make it possible to reopen the output window on Windows (bug
709 - A POSIX regular expression library is now included and used
710 automatically if the host does not have one or has one that is
713 * Build fixes and changes:
715 - Work around bug in GSL that prevented build with recent GCC
716 versions without manually adding -fgnu89-inline to CFLAGS.
718 - Also warn about missing prerequisites as we encounter them (bug
721 - Distribute necessary files to allow users working from the
722 distributed tarball to configure with --enable-gui-tools.
724 - Append $(EXEEXT_FOR_BUILD) to output file name when building
725 q2c, fixing build problems on Windows.
727 - GSL 1.8 or later is now required.
729 - Build errors with --enable-relocatable were fixed.
731 * The German translations were removed, since native German speakers
732 found them too poor to be useful.
734 Changes from 0.4.0 to 0.6.0:
736 * The PSPP license is now version 3 or later of the GNU General
737 Public License. Previously, it was version 2 or later.
739 * PSPP now has a graphical interface, called PSPPIRE. This
740 interface allows you to enter data and variable definitions
741 interactively. Commands may be executed in syntax form, or by
742 using the interactive dialog boxes available from the dropdown
745 * A few sample syntax files are now included in the `examples'
748 * Numerous major and minor bugs have been fixed.
752 * The INSTALL file now reflects the details of how to install
753 PSPP. It is a tailored version of the generic installation
754 instructions, instead of a verbatim copy.
756 * iconv, which is ordinarily installed as part of a Unix-like
757 system, is now required. If you don't have it already, you can
758 install GNU libiconv (http://www.gnu.org/software/libiconv/).
760 * libxml2 and zlib are new optional dependencies. They are
761 required to use PSPP's support for reading Gnumeric files.
763 Statistical procedure changes:
765 * REGRESSION is a new procedure for fitting linear models to data
766 via least-squares estimation.
768 * NPAR TESTS is a new procedure for non-parametric tests. In this
769 release, it supports binomial and chi-square tests.
771 * RANK is a new procedure to rank variables. It supports numerous
774 * FREQUENCIES can now output histograms and pie charts. These
775 features were present in earlier releases, but not documented.
777 User interface changes:
779 * In many situations where PSPP once terminated with a fatal
780 error, PSPP now recovers and continues execution.
782 * PSPP is now able to start up and run even if it cannot find its
785 * Journaling of interactive commands to a disk file is now
786 implemented. By default, journaling is enabled, to a file named
787 `pspp.jnl' in the current directory. SET JOURNAL may be used to
790 * The use of `+' between syntax file names on the command line to
791 prevent the dictionary from being cleared between their
792 executions is no longer supported. All syntax files are now
793 executed as if `+' had been specified.
795 * The -d/--define and -u/--undef command line options are no
796 longer supported. Instead, use /usr/bin/env or shell primitives
797 to define or clear environment variables before invoking PSPP.
799 * If a syntax file named named `rc' is found in a configuration
800 directory (such as $HOME/.pspp), it is executed before any
801 syntax file specified on the command line. The -r or
802 --no-statrc command line option may be used to disable this
807 * Output configuration options have changed. Please refer to the
808 manual for a full description of the available options.
810 In consequence, you will need to reinstall your "devices" file.
811 "make install" will do this for you.
813 * Most error messages are now written to PSPP output files by
814 default. SET ERROR can be used to disable this behavior.
816 * When invoked interactively, PSPP now by default produces output
817 on the terminal, piping it through the "more" program.
818 Previously, by default output was written only to file
819 pspp.list. On most terminals, the page length used for output
820 automatically adapts to the terminal size, even if the terminal
825 - This driver now supports charts in output. Charts are written
826 as separate files that the main output file refers to. By
827 default, charts are written in PNG format to files named
828 pspp-1.png, pspp-2.png, and so on.
830 - Configurations are provided that use VT100 (and xterm)
831 line-drawing characters in tables. The option "-o list-vt100"
832 requests use of this device for output to pspp.list.
836 - The default paper size is now determined using the PAPERSIZE
837 environment variable, or the LC_PAPER locale category on
838 systems that support it. If these are not set, the default is
839 now A4, instead of US letter. To make US letter the default,
840 set PAPERSIZE to "letter" in your environment.
842 - Font metrics are now read from AFM files, instead of
843 Groff-format metrics files. PostScript fonts can now be
846 In consequence, you will need to install an AFM file for each
847 font used in PostScript output. "make install" will install
848 AFM files for the standard PostScript fonts, including the
849 ones that the PostScript driver uses by default.
851 - Standard paper sizes no longer need to be specified through a
852 configuration file. The "papersize" configuration file is no
853 longer needed, or supported.
855 - The PostScript prologue is no longer obtained from the
856 "ps-prologue" configuration file. This configuration file is
857 no longer needed, or supported.
861 - The HTML prologue is no longer obtained from the
862 "html-prologue" configuration file. This configuration file
863 is no longer needed, or supported.
865 Command language changes:
867 * The following commands are new:
869 - GET DATA, which currently supports reading Gnumeric files and
870 text data files. It will be extended later to read other
871 types of foreign data.
873 - CD, to change the current directory.
875 - INSERT, to execute a syntax file.
877 - DELETE VARIABLES, to remove variables from the active file
880 - ADD DOCUMENT, to add text to active file documents.
882 - CLOSE FILE HANDLE (a PSPP extension; see below).
884 - XEXPORT, a PSPP extension that is a transformation equivalent
887 * The following functions for transformation expressions are new:
889 - DATEDIFF, for computing the difference of two dates.
891 - DATESUM, for advancing a date by a specified duration.
893 - VALUELABEL, to obtain the value label for a value.
895 * PSPP now supports very long string variables (over 255 bytes
898 * MATCH FILES now supports the FIRST and LAST subcommands.
900 * Previous versions of PSPP prohibited using commands to both read and
901 write a single file at the same time. Now, PSPP allows this, and
902 the new version of the file atomically replaces the old version.
904 * The following commands are no longer available. They will be
905 re-implemented in a later release:
907 - CLEAR TRANSFORMATIONS
913 * The PROCESS IF command, which was deprecated, has been removed.
914 You may replace any usage of it by SELECT IF following
915 TEMPORARY, which has the same effect.
917 * The output format for variables created by VECTOR may now be
918 specified as part of the VECTOR syntax.
920 "Scratch files", a new PSPP extension:
922 A scratch file, like a system file, consists of a dictionary and
923 any number of cases. Small scratch files are stored in memory;
924 one that grows too large is written to disk. By default, any file
925 handle whose name begins with # is assumed to refer to a scratch
928 Scratch files can be used just about anywhere a system or portable
929 file can be used. Also, portable files are now allowed in most
930 places that system files were allowed in previous PSPP version.
932 A new CLOSE FILE HANDLE command allows the storage associated with
933 scratch files to be freed. It also allows file handles to be
934 reassigned to new files.
936 For more information on scratch files, refer to the "File Handles"
937 section in the PSPP manual. For specifics of what commands now
938 allow what kinds of files to be specified, refer to the
939 documentation on those particular commands.
943 * Binary formats and IBM/360 formats, including ASCII/EBCDIC
944 translation, are now supported. Use FILE HANDLE to specify the
945 format of these files.
947 * Little-endian, big-endian, and VAX-endian formats are now
948 supported for integer binary formats when reading and writing
949 data files. The new RIB and WIB subcommands on the SET command
950 control endianness of integer data. The default is the host's
953 * IEEE 754, VAX, and IBM hexadecimal formats are now supported for
954 floating point binary formats when reading and writing data
955 files. The new RRB and WRB subcommands on the SET command
956 control the floating point format. The default is the host's
957 native floating point format.
959 * DATA LIST now supports the SKIP subcommand, to skip records at
960 the beginning of a file. For compatibility, DATA LIST now
961 treats N format as F format for FREE and LIST format input.
963 * The SAVE and XSAVE commands now support the UNSELECTED,
964 PERMISSIONS, NAMES, and MAP subcommands.
966 * The EXPORT command has been re-implemented to obtain better
967 results. Support for the UNSELECTED, DIGITS, and TYPE
968 subcommands has been added.
970 * For compatibility, PRINT now inserts a space at the beginning of
971 every output line, even lines that would otherwise be blank,
972 when OUTFILE is specified. (The behavior of WRITE is
975 * For compatibility, PRINT EJECT now inserts the digit `1' at the
976 beginning of each line that should begin a new page.
978 * For compatibility, WRITE now outputs the system-missing value as
979 a field filled with spaces. Binary formats are an exception.
980 (The behavior of PRINT is unchanged.)
984 * Input and output format descriptions have been rewritten. They
985 now precisely describe what is accepted on input and written on
988 * The descriptions of the PSPP system and portable file formats
989 have been extensively revised and improved.
991 For developers, the build system now requires Autoconf 2.60 and
994 Changes from 0.3.0 to 0.4.0:
996 Changes in build dependencies:
998 * The GNU Scientific Library (libgsl), version 1.6 or later, is
1001 * libplot from GNU plotutils is optional. Without it, the new
1002 graphing features will not work. If you do not have it
1003 installed, you must run `configure' with --without-libplot.
1005 * libgmp2 is no longer a dependency.
1007 Newly implemented commands and statistical features:
1009 * EXAMINE, including its graphing features.
1011 * FREQUENCIES now supports percentiles.
1019 * SORT CASES now sorts stably, that is, two cases with equal sort
1020 criteria will be in the same relative order before and after the
1023 * T-TEST (re-written).
1025 * DATE and USE. These commands are parsed but otherwise ignored,
1026 to enhance compatibility with certain command files that invoke
1029 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
1030 currently have no effect on PSPP output, but their values are
1031 written to and read from system files and thus may affect
1032 third-party software.
1034 * SET EPOCH implemented.
1036 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
1039 * FILE HANDLE now supports custom tab widths.
1041 Long variable names (and other identifiers) are now supported. Up
1042 to the first 64 bytes of each identifier is significant. PSPP now
1043 reads and writes system files compatible with SPSS version 12.
1045 New --algorithm and --syntax command line options allow
1046 SPSS-compatible or enhanced modes to be selected.
1048 Support for transformation expressions has been rewritten and
1049 significantly improved. Refer to the manual for details.
1051 Calculation of moments (mean, standard deviation, kurtosis,
1052 skewness) has been rewritten and should now be more accurate. In
1053 --algorithm=enhanced mode moments may be more accurate than SPSS in
1056 Numerous bugs have been fixed, too many to mention here. Many new
1057 tests have been added, leading to the discovery and fixing of many
1060 The ASCII output driver can now squeeze multiple blank lines into
1063 Much of the code has been rewritten and refactored. It is now much
1066 The FILE TYPE and REPEATING DATA commands have been disabled for
1067 this release because their implementations were deemed too buggy to
1068 be useful. They will be fixed and replaced in a future release.
1070 New pspp-mode for Emacs (in pspp-mode.el).
1072 Added rudimentary command-line completion for interactive input.
1074 lib/julcal and lib/dcdflib are no longer used, so they have been
1077 For developers, the build system now requires Autoconf 2.58 and
1078 Automake 1.7. The included gettext has been updated to version
1081 Some reports state that Texinfo 4.8, the latest version, may be
1082 necessary to successfully format the documentation on some systems.
1084 Version 0.3.0 changes since 0.2.3:
1088 * Using alphanumeric variables in functions under AGGREGATE
1091 * Under certain circumstances, the final case would be omitted
1092 from the results of an AGGREGATE operation. Fixed.
1094 * Undefined behavior was invoked by referencing a freed pointer
1095 under certain circumstances. Fixed.
1097 * A wrong record size was displayed when paging the active file to
1100 * Not having enough temporary space for sorting caused a core
1103 * Syntax errors in function descriptions on AGGREGATE caused core
1106 * A null pointer was dereferenced, causing a core dump, when
1107 PERCENTILES was specified on FREQUENCIES. This fixes the
1108 problem, but PSPP still doesn't calculate percentiles.
1110 * SORT always sorted in ascending order. Fixed.
1112 * Some minor memory leaks in the expression parser were removed.
1114 * Many assertions fixed for strict ANSI C compliance.
1118 * SET ECHO ON now implemented, but turned off by default.
1120 * PRINT specifier supported on END REPEAT.
1124 * System libgmp2 library is used if installed instead of
1125 unconditionally using the included libgmp2 subset.
1127 * Extensive code cleanup, which continues.
1129 * Added CORRELATIONS command parser, but not implemented.
1131 Version 0.2.3 changes since 0.2.2:
1135 * SPLIT FILE with a string variable caused a core dump. Fixed.
1137 * Nested INCLUDEs didn't work. Fixed.
1139 * The MATCH FILES procedure set the values of variables not present
1140 to 0. It should have been SYSMIS. This is now fixed.
1142 * The REMARK command was too aggressive about skipping lines. It
1143 didn't like being the last command in a file.
1145 * Comment parsing wasn't consistent with the rest of the code in its
1146 idea of where one command ends and another starts. This meant
1147 that sometimes commands would be mysteriously ignored. Thanks to
1148 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
1150 * The TABLE subcommand on MATCH FILES worked only erratically at
1151 best. This fixes it. Thanks to Dr. Dirk Melcher
1152 <BZN-mdksh@t-online.de> for reporting this bug.
1154 * VARIABLE LABELS rejected a slash before the first variable
1155 specification, contradicting the documentation. Thanks to Walter
1156 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1158 * Because of an incorrect optimization in memory allocation,
1159 CROSSTABS sometimes segfaulted when asked to output multiple
1160 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1163 * CROSSTABS didn't display value labels for column and row
1164 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1167 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1168 <BZN-mdksh@t-online.de> for reporting this bug.
1170 * The TABLE subcommand on MATCH FILES worked only erratically at
1171 best. This fixes it. Thanks to Dr. Dirk Melcher
1172 <BZN-mdksh@t-online.de> for reporting this bug.
1174 * VARIABLE LABELS rejected a slash before the first variable
1175 specification, contradicting the documentation. Thanks to Walter
1176 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1178 * Because of an incorrect optimization in memory allocation,
1179 CROSSTABS sometimes segfaulted when asked to output multiple
1180 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1183 * CROSSTABS didn't display value labels for column and row
1184 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1187 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1188 <BZN-mdksh@t-online.de> for reporting this bug.
1190 * MATCH FILES corrupted memory and dumped core on some syntax
1193 * MATCH FILES should set numeric values not available to the
1194 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
1195 <BZN-mdksh@t-online.de> for reporting this bug.
1197 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
1198 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
1202 * Some systems didn't like the way open_file was coded. Thanks to
1203 Hankin <hankin@rogue.consultco.com> for pointing this out.
1205 * The SAVE procedure didn't save long string variables properly.
1206 Fixed by this patch. Thanks to Hankin
1207 <hankin@rogue.consultco.com> for this patch.
1209 * Minor documentation fixes for MATCH FILES.
1211 Version 0.2.2 changes since 0.2.1:
1215 * Fix behavior of PRINT SPACE for negative arguments.
1217 * Fix reading some unusual system files.
1219 * Fix LIST problems with very long variables. Thanks to Hankin
1220 <hankin@dunno.com> for this bug report.
1222 * Fix problems with some string format specifiers.
1224 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
1225 <BZN-mdksh@t-online.de> for reporting this bug.
1227 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
1228 Hankin <hankin@dunno.com> again on this one.
1230 * Sometimes you may encounter a PSPP script that has to be
1231 interpreted in interactive mode. Now you can use the -i flag to
1234 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
1235 `unused variable' warnings under gcc 2.7.2.3, fixing this will
1240 * The files in gmp need the internationalization directory in
1241 their include path. Thanks to OKUJI Yoshinori
1242 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
1244 Version 0.2.1 changes since 0.2.0:
1248 * Remember to include examples/ directory in distribution :-)
1250 * Fixed gmp compile problems for some non-i386 architectures.
1251 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
1254 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
1255 matches the documented behavior exactly, and error messages are
1256 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
1258 Version 0.2.0 changes since 0.1.0:
1260 Procedures now implemented:
1261 * CROSSTABS. Please see documentation for caveats.
1263 Transformations and utilities now implemented:
1266 * CLEAR TRANSFORMATIONS
1267 * DISPLAY (all subcommands).
1278 Support for input and output through pipes: "|command" and
1279 "command|" filenames; support for special filenames "-", "stdin",
1282 New command-line features:
1283 * New option --testing-mode: Invoke heuristics to assist testing.
1284 * New option --safer, -s: Don't allow certain unsafe operations.
1285 * New option --command=CMD, -c CMD: Perform literal command CMD.
1286 * rc file ~/.pspp/rc is executed before any other files.
1287 * Now multiple syntax files can be specified.
1289 Operator LAG is now implemented.
1291 Added missing FILE subcommand to REREAD.
1293 Table output manager completely rewritten.
1295 Device configuration file syntax changed. You will need to
1296 reinstall your `devices' file.
1298 New output driver for HTML.
1300 PostScript driver and prologue simplified.
1302 Many bugs fixed. General source-code cleanup.
1304 Added Texinfo documentation for:
1305 * PSPP system file format
1306 * PSPP portable file format
1307 * How to write input for q2c parser generator
1310 PSPP language is now fully documented. Please report any
1311 inaccuracies or omissions in the documentation.
1313 Changes for version 0.1.0:
1315 First public release. For changes from unreleased development
1316 versions, please see ONEWS.
1318 ----------------------------------------------------------------------
1319 Copyright information:
1321 Permission is granted to anyone to make or distribute verbatim
1322 copies of this document as received, in any medium, provided that
1323 the copyright notice and this permission notice are preserved, thus
1324 giving the recipient permission to redistribute in turn.
1326 Permission is granted to distribute modified versions of this
1327 document, or of portions of it, under the above conditions,
1328 provided also that they carry prominent notices stating who last
1332 version-control: never