1 PSPP NEWS -- history of user-visible changes.
2 Copyright (C) 1996-2000, 2008-2016, 2017, 2019 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 1.2.0 to 1.3.0:
9 * The Find dialog box, when searching for numeric values, will match only
10 to the precision of the variable's print format. This avoids behaviour
11 which is suprising to some users.
13 * PSPP now supports the SPSS viewer (.spv) format that SPSS 16 and later
14 use to save the contents of its output editor:
16 - PSPP and PSPPIRE can write output to .spv files.
18 - The new utility pspp-output can convert .spv files to other formats.
20 - The pspp-convert utility can now decrypt encrypted .spv files. The
21 encrypted viewer file format is unacceptably insecure, so to
22 discourage its use PSPP and PSPPIRE do not directly read or write
25 * A bug where the Data|Select Cases|Random Sample menu would generate
26 invalid syntax has been fixed.
28 * FREQUENCIES will emit a warning if one or more weight values are missing.
30 * Plain text output is no longer divided into pages, since it is now
31 rarely printed on paper.
33 * pspp-convert improvements:
35 - New "-a", "-l", "--password-list" options to search for an
36 encrypted file's password.
38 - New "--keep" and "--drop" options to output only selected variables.
40 - New "--recode", "--no-var-name", "--labels", "--print-formats",
41 "--decimal", "--delimiter", and "--qualifier" options to control
44 * Improvements to SAVE DATA COLLECTION support for MDD files.
46 * Bug fix for CVE-2018-20230.
48 * The /RENAME subcommand in SAVE TRANSLATE et al. has been extended
49 to support the syntax also accepted by other software.
51 * The EXAMINE command will now perform the Shapiro-Wilk test when
52 one or more plots are requested.
54 * The REGRESSION command now supports the /STATISTICS=TOL option which
55 outputs tolerance and variance inflation factor metrics for the data.
57 * The QUICK CLUSTER command now supports the /SAVE option which can
58 be used to save the cases' cluster membership and/or their distance
59 from the cluster centre to the active file.
61 * The MEANS command has been re-implemented.
63 * A bug where the GUI would crash when T-TEST was executed whilst
64 a filter was set has been fixed.
66 * The GUI now has a sub-dialog for post-hoc tests of the oneway
69 * Gtk+3.22.0 or later must now be used when building.
71 * GRAPH: Categorical barcharts displaying percentages now show the
72 sub-category as a percentage of the primary category instead of the
77 - The PRINT subcommand is now implemented.
81 Changes from 1.0.1 to 1.2.0:
83 * New experimental command SAVE DATA COLLECTION to save MDD files.
85 * MTIME and YMDHMS variable formats now supported.
89 - zlib is now a required dependency. (Previously it was optional.)
91 - Gtk+3.18.0 or later must now be used when building.
93 - The code implementing the sheet rendering has been removed. Instead we
94 use a third party library: spread-sheet-widget.
96 * The "NOMISSING" keyword when generating syntax for piecharts in the
97 frequencies command was omitted. This has been corrected.
99 Changes from 1.0.0 to 1.0.1:
101 * Bug fixes, including fixes for CVE-2017-12958, CVE-2017-12959,
102 CVE-2017-12960, and CVE-2017-12961.
104 Changes from 0.11.0 to 1.0.0:
106 * Translation updates.
108 Changes from 0.10.2 to 0.11.0:
110 * The REGRESSION command now has a /ORIGIN subcommand to perform
111 regression through the origin.
113 * The FACTOR command can now analyse matrix files prepared with MATRIX DATA.
115 * The FACTOR command can now print the anti-image matrices.
117 * The MATRIX DATA command has been added.
119 * Some inappropriate properties in selection dialogs have been corrected.
121 * A bug which could cause the HTML driver to go into a tight loop
124 * An error in the FREQUENCIES procedure, where the word "Mean" was
125 printed when "Variance" was appropriate has been fixed.
127 * The ncurses library is no longer required or used.
129 * A bug where the Mann-Whitney test would give misleading results
130 if run on multiple variables and MISSING=ANALAYSIS was specified
133 * Gtk+3.14.5 or later must now be used when building.
135 * Graphical user interface changes:
137 ** There is a new menu: Edit|Options
139 ** The Non Parametric Statistics Menu has a new item: "K Independent Samples".
141 ** Dialog boxes can now be canceled using the <Escape> key.
143 * The AUTORECODE command now accepts an optional / before INTO.
145 * The short form of the VECTOR command can now create string variables.
147 * Bug fixes, including fixes for CVE-2017-10791 and CVE-2017-10792.
149 Changes from 0.10.1 to 0.10.2:
151 * CROSSTABS implements a new COUNT subcommand to round case or cell
154 * Help will be opened as HTML in default browser if yelp
157 * When plotting scatterplots with only one dataset (the simple case)
158 the colour used for the dataset is now black. The previous default
159 from the Tango palette was too faint to see easily.
161 * The varible info dialog could previously only paste a single variable.
162 Now it can paste multiple variables.
164 * Bug fixes, including the following:
166 - T-test with independent samples GUI crashed with string
167 type variable as group variable.
169 - The variable info dialog showed the previous selected variable
170 superimposed with the currently selected one.
172 - The GLM command did not properly deal with missing values. This
175 Changes from 0.10.0 to 0.10.1:
177 * Bug fixes, including the following:
179 - A bug where certain dialog boxes could not be properly populated
182 - Various commands have been hardened against errors when called
185 * Translation updates. Thanks to our translators!
187 Changes from 0.8.5 to 0.10.0:
189 * The QUICK CLUSTER command has a /PRINT subcommand which shows
190 the initial cluster centres and the final cluster membership of
191 each case. The clustering algorithm has also been updated, so
192 as to produce better separated clusters.
194 * A Russian localisation has been contributed.
196 * The GRAPH command now has a /BAR subcommand to draw barcharts.
198 * If the DECIMAL character is set to COMMA then the ',' character
199 will not be treated as a separator by DATA LIST.
201 * The graphical user interface (psppire) has been changed as follows:
203 - It now uses Gtk+ version 3 instead of version 2. Accordingly, it has a
204 somewhat different look and feel.
206 - There is now a Graphs menu to access the GRAPH command.
208 - The status of dialog box widgets are now preserved between calls
209 to the same dialog box for the same dataset.
211 - The dialog box for the Logistic Regression command will now
212 infer that string variables or any varible with a "measure"
213 of Nominal or Ordinal are to be treated as categorical variables
214 and will generate syntax accordingly.
216 * The pspp-convert utility can now decrypt encrypted syntax files.
217 The encrypted syntax file format is unacceptably insecure, so to
218 discourage its use PSPP and PSPPIRE do not directly read or write
225 * The following functions for transformation expressions are new:
227 - REPLACE, for search-and-replace of one string with another.
229 - STRUNC, to truncate a string and trim trailing spaces.
231 - MEDIAN, to compute the median of its arguments.
233 - The TRUNC function in expressions now supports additional arguments
234 for truncating to values other than integers and to indicate a level
235 of rounding fuzz. The default rounding fuzz may now be controlled
236 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
238 * Bug fixes, including the following notable ones:
240 - The correlation coefficient in the paired samples t-test
241 procedure is now correctly calculated when presented with
244 - The ESCAPE subcommand has been removed from GET DATA /TYPE=TXT.
245 For compatibility, the behavior that ESCAPE enabled is now the
246 default and only supported behavior.
248 - Rendering of the variable and data sheets in right-to-left locales
251 - The Mann-Whitney test, when run on a dataset containing values
252 of the group variable, other than those defining the test groups,
253 would incorrectly calculate the ranks. This has been corrected.
255 * The IMPORTCASES subcommand on GET DATA is now ignored, for
258 Changes from 0.8.4 to 0.8.5:
260 * The FREQUENCIES and CROSSTABS commands can now generate barcharts.
262 * The FACTOR command can now perform PROMAX rotations.
264 * SPSS/PC+ system files are now supported on GET and other commands
265 that read SPSS system files. The pspp-convert program can now read
266 SPSS/PC+ system files. Writing the obsolete SPSS/PC+ system file
267 format is not supported.
269 * SYSFILE INFO can now read SPSS/PC+ system files and SPSS portable
272 * FREQUENCIES: A bug was fixed where an assertion failure occurred
273 when an empty dataset was presented.
275 * The GRAPH command is now available. Initially it supports
276 scatterplots and histograms.
278 * The RND operator in expressions now supports additional operands
279 for rounding to values other than integers and to indicate a level
280 of rounding fuzz. The default rounding fuzz may now be controlled
281 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
283 Changes from 0.8.3 to 0.8.4:
285 * Formatting of SYSFILE INFO output was made easier to read.
287 * Bug fixes, including the following notable ones:
289 - FREQUENCIES works properly for string variables. (This bug was
290 introduced in 0.8.2.)
292 - CROSSTABS now correctly computes all of the measures that it
293 offers. Some measures have been removed because they were not
296 - The NPAR TESTS calculation of significance for the RUNS
297 subcommand has been corrected.
299 - Planned comparisons in ONEWAY ANOVA now correctly handle negative
302 - The COUNT command now correctly treats missing values as
305 - Conformance fixes to Open Document output format.
307 Changes from 0.8.2 to 0.8.3:
309 * Independent T-Tests displayed the standard error of the difference
310 and the confidence interval for the unequal variances case, where
311 the equal variances case should have been. This has been fixed.
313 * REGRESSION now recognises /STATISTICS=CI(x) which causes confidence
314 intervals for the coefficients to be printed.
316 * When DESCRIPTIVES calculates Z scores, it now omits cases filtered
317 by the current FILTER settings.
319 * PSPPIRE graphical user interface improvements:
321 - Dialog boxes with source variable lists can now choose the sort
322 order; right click and select from the popup menu.
324 - File|Open now allows an encoding to be selected for opening
327 - File|Display Data File Information|External File... now allows an
328 encoding to be selected.
330 - A problem with the Means dialog has been resolved (bug #41433).
332 - Several problems related to the input of spreadsheets have been
333 fixed (bug #41657, #41620
335 * System file related improvements:
337 - With ENCODING="DETECT", SYSFILE INFO can now help the user to
338 pick an encoding for reading a system file that does not identify
341 - SYSFILE INFO now accepts an ENCODING subcommand to specify the
342 character encoding of string data in the system file.
344 - Variable labels over 255 bytes long are now accepted without
345 truncation (bug #41863).
347 - System files that contain duplicate variable names may now be
348 read successfully (bug #41475).
350 Changes from 0.8.1 to 0.8.2:
352 * Charts are now rendered with colours from the Tango palette instead
353 of fully saturated primaries.
355 * Support for new system file variants:
357 - PSPP can now read and write ZCOMPRESSED system files, which
358 compress data much more effectively than older "compressed"
359 files. (The older format is still supported.)
361 - PSPP can now decrypt encrypted system files, using the new
362 pspp-convert utility. The encrypted system file format is
363 unacceptably insecure, so to discourage its use PSPP and PSPPIRE
364 do not directly read or write this format.
366 * Missing values for long string variables are now read from and
367 written to system files in an SPSS-compatible fashion.
369 (Earlier versions of PSPP that supported missing values for long
370 string variables wrote them to system files in an SPSS-incompatible
371 way. To fix the problem, read the system file with this version of
372 PSPP and then save a new copy of it.)
374 * pspp-convert, a new standalone utility for converting SPSS system
375 and portable files to other formats, is now included. The initial
376 version supports comma-separated value files as output format.
377 pspp-convert can also decrypt encrypted system files.
381 - zlib is now a required dependency. (Previously it was optional.)
383 Changes from 0.8.0 to 0.8.1:
389 * Changes to existing commands:
391 - CROSSTABS: The requirement that one expected count must be less than five
392 before Fishers Exact Test will be reported has been removed.
394 * PSPPIRE graphical user interface improvements:
396 - A new set of icons has been contributed.
398 - Syntax windows now parse syntax in "auto" mode, which in practice
399 should mean that both "batch" and "interactive" syntax now works,
400 instead of just "interactive" syntax.
402 - The variable pane of data windows now include a Role column.
406 - System files written by IBM SPSS 21 are now read without warnings.
408 - System files written by "VOXCO INTERVIEWER 4.3" are now read
411 - PSPPIRE should now more gracefully handle syntax files that contain
414 Changes from 0.6.2 to 0.8.0:
420 - DATAFILE ATTRIBUTES
427 - LOGISTIC REGRESSION
431 - PRESERVE and RESTORE
435 - SAVE TRANSLATE to CSV and tab-delimited files
437 - VARIABLE ATTRIBUTES
439 * Changes to existing commands:
441 - AUTORECODE has a new GROUP subcommand.
443 - CROSSTABS has been re-implemented to fix numerous bugs.
445 - EXAMINE: /MISSING=LISTWISE is now the default.
447 - DO REPEAT command has been reimplemented. Now, when DO REPEAT
448 contains an INCLUDE or INSERT command, substitutions are not
449 applied to the included file.
451 - FILE HANDLE has a new ENDS subcommand to select CR or CRLF new-lines.
453 - HOST has been updated to use more modern syntax.
455 - Most commands that work with data files now support a new
458 - MISSING VALUES can now assign missing values to long string
461 - ONEWAY: the POSTHOC subcommand is now implemented.
463 - The following new subcommands to NPAR TESTS have been implemented:
464 COCHRAN, FRIEDMAN, JONCKHEERE-TERPSTRA, KENDALL, KRUSKAL-WALLIS, MANN-WHITNEY,
465 MCNEMAR, SIGN, WILCOXON, and RUNS
467 - SET and SHOW no longer have ENDCMD, NULLINE, PROMPT, CPROMPT, and
468 DPROMPT subcommands. The defaults are now fixed values.
470 - SHOW now has a JOURNAL subcommand, to show the location of the
473 - VALUE LABELS can now assign value labels to long string
476 * Other language changes:
478 - The new DATASET commands replace the "scratch file" PSPP
479 extension, which is no longer supported.
481 - Strings may now include arbitrary Unicode code points specified
482 in hexadecimal, using the syntax U'hhhh'. For example, Unicode
483 code point U+1D11E, the musical G clef character, may be
484 expressed as U'1D11E'.
486 See the "Tokens" section in the PSPP manual for more information.
488 - In previous versions of PSPP, in a string expressed in
489 hexadecimal with X'hh' syntax, the hexadecimal digits expressed
490 bytes in the locale encoding. In this version of PSPP, X'hh'
491 syntax always expresses bytes in UTF-8 encoding.
493 See the "Tokens" section in the PSPP manual for more information.
495 * PSPPIRE graphical user interface improvements:
497 - Added support for non-ASCII characters in strings, labels and
500 - A "Split Window" function is available, which makes it easier to
501 see different parts of a large data file.
503 - Data files can now be opened by specifing their name as the first
504 argument. This means that on a properly configured desktop, double
505 clicking on an icon will open the file.
507 - Foreign formats, such as Gnumeric, OpenDocument and CSV can be imported
508 via using an "intelligent" application assistant dialog.
512 - The new "cairo" output driver supports output in PostScript, PDF,
513 and SVG formats. Its functionality is a superset of that of the
514 "postscript" driver, which has been removed. You must have Cairo
515 and Pango installed to build the "cairo" driver.
517 - Charts are now produced with Cairo and Pango, instead of libplot.
518 Without them, the new graphing features will not work. If you do
519 not have Cairo and Pango installed, you must run `configure' with
522 - The plain text output driver now properly supports multibyte UTF-8
523 characters, including double-width characters and combining
526 - Output to OpenDocument format is now supported.
528 - The HTML output is much improved.
530 * The "pspp" program has a new option --batch (or -b) that selects
531 "batch" syntax mode. In previous versions of PSPP this syntax mode
532 was the default. Now a new "auto" syntax mode is the default. In
533 "auto" mode, PSPP interprets most syntax files correctly regardless
534 of their intended syntax mode.
536 See the "Syntax Variants" section in the PSPP manual for more
539 * The "pspp" program has a new option --syntax-encoding that
540 specifies the encoding for syntax files listed on the command line,
541 as well as the default encoding for syntax files included with
542 INCLUDE or INSERT. The default is to accept the system locale
543 encoding, UTF-8, UTF-16, or UTF-32, automatically detecting which
544 one the system file uses.
546 See the documentation for the INSERT command in the PSPP manual for
549 * Text data files that PRINT and WRITE creates now use the system
550 native line ends by default (CRLF on Windows, LF only elsewhere).
551 Use the new ENDS subcommand on FILE HANDLE to override the default.
553 * A new Perl module allows Perl programs to read and write PSPP
556 * A tutorial chapter has been added to the user manual.
558 Changes from 0.6.1 to 0.6.2:
562 - Dutch, thanks to Harry Thijssen.
564 - Brazilian Portuguese, thanks to Michel Boaventura.
566 Thanks for translations are also due to the coordinators at
567 translationproject.org.
569 * Statistical bug fixes:
571 - REGRESSION: Report correct standard error of the estimate (bug
574 - T-TEST: Report correct significance of paired sample T-test in
575 the common case (bug #26936) and corner cases. Thanks to Mike
576 Griffiths and Matej Cepl for reporting these bugs.
578 * Build fixes and changes:
580 - Fix build with GTK+ 2.17.4 and later.
582 - Make running "make" after running "configure" with different
583 settings reliably rebuild version.c.
585 - Cygwin and MinGW build fixes.
587 - Fixes for building with recent gnulib.
589 - The Makefile now honors two new variables, PSPP_LDFLAGS and
590 PSPPIRE_LDFLAGS, that affect linking of the PSPP and PSPPIRE
591 binaries, respectively. This makes building easier for some
594 - Fixes for "configure --enable-relocatable" (bug #25508).
596 * Data file bug fixes and changes:
598 - Fix reading text data files that contain a mix of white space
599 and commas. Now "a ,b" is treated as two fields containing "a"
600 and "b"; previously it was treated as three, with an empty field
603 - Fix writing corrupted .sav files on Windows.
605 - Fix writing variable labels longer than 252 bytes to save files.
606 Thanks to Robert Westlund for reporting this bug.
608 - Fix writing corrupted .por files (bug #26034).
610 - Fix reading .por files whose initial lines are not padded out
611 with spaces as expected.
613 - PSPP will no longer issue warnings about some .sav file records
614 or values that it does not understand. These warnings were
615 harmless, but needlessly alarmed some users.
617 - Fix crash reading empty string fields from PostgreSQL databases.
619 * Bug fixes that affect PSPP and PSPPIRE:
621 - Users may now control precision of output statistics. Instead
622 of hard coding the width and decimals of output numbers, respect
623 the default format in most instances. Counts are now normally
624 displayed with the format of the weight variable, if any.
626 - Fix crash when an INSERT command specifies the name of a file
627 that does not exist (bug #24569).
629 - Fix crash when CROSSTABS specifies a long-string variable (bugs
632 - Fix crash drawing pie charts with many segments.
634 - Fix crash when NUMERIC specifies an invalid format.
636 * PSPPIRE bug fixes and changes:
638 - On Windows, write the output file to the user's home directory
639 instead of the current directory, to better match user
642 - Some data editor fixes.
646 - Fix typo in BINOMIAL section of user manual (bug #25892).
648 Changes from 0.6.0 to 0.6.1:
650 * Statistical bug fixes:
652 - Report correct standardized regression coefficients in linear
653 regression output (bug #23567).
655 * Bug fixes that affect PSPP and PSPPIRE:
657 - Avoid crash with pie charts (bug #24014).
659 - Don't append % to count totals (bug #24003).
661 - Don't crash on bad input (bug #24031).
663 - Don't crash if "end data." is not left aligned (bug #24115).
665 - Change default workspace value to 64 MB, to avoid unnecessary
666 disk accesses on modern machines.
670 - Add ".sav" or ".por" suffix to filename when saving with Save_As
673 - Make it possible to reopen the output window on Windows (bug
676 - A POSIX regular expression library is now included and used
677 automatically if the host does not have one or has one that is
680 * Build fixes and changes:
682 - Work around bug in GSL that prevented build with recent GCC
683 versions without manually adding -fgnu89-inline to CFLAGS.
685 - Also warn about missing prerequisites as we encounter them (bug
688 - Distribute necessary files to allow users working from the
689 distributed tarball to configure with --enable-gui-tools.
691 - Append $(EXEEXT_FOR_BUILD) to output file name when building
692 q2c, fixing build problems on Windows.
694 - GSL 1.8 or later is now required.
696 - Build errors with --enable-relocatable were fixed.
698 * The German translations were removed, since native German speakers
699 found them too poor to be useful.
701 Changes from 0.4.0 to 0.6.0:
703 * The PSPP license is now version 3 or later of the GNU General
704 Public License. Previously, it was version 2 or later.
706 * PSPP now has a graphical interface, called PSPPIRE. This
707 interface allows you to enter data and variable definitions
708 interactively. Commands may be executed in syntax form, or by
709 using the interactive dialog boxes available from the dropdown
712 * A few sample syntax files are now included in the `examples'
715 * Numerous major and minor bugs have been fixed.
719 * The INSTALL file now reflects the details of how to install
720 PSPP. It is a tailored version of the generic installation
721 instructions, instead of a verbatim copy.
723 * iconv, which is ordinarily installed as part of a Unix-like
724 system, is now required. If you don't have it already, you can
725 install GNU libiconv (http://www.gnu.org/software/libiconv/).
727 * libxml2 and zlib are new optional dependencies. They are
728 required to use PSPP's support for reading Gnumeric files.
730 Statistical procedure changes:
732 * REGRESSION is a new procedure for fitting linear models to data
733 via least-squares estimation.
735 * NPAR TESTS is a new procedure for non-parametric tests. In this
736 release, it supports binomial and chi-square tests.
738 * RANK is a new procedure to rank variables. It supports numerous
741 * FREQUENCIES can now output histograms and pie charts. These
742 features were present in earlier releases, but not documented.
744 User interface changes:
746 * In many situations where PSPP once terminated with a fatal
747 error, PSPP now recovers and continues execution.
749 * PSPP is now able to start up and run even if it cannot find its
752 * Journaling of interactive commands to a disk file is now
753 implemented. By default, journaling is enabled, to a file named
754 `pspp.jnl' in the current directory. SET JOURNAL may be used to
757 * The use of `+' between syntax file names on the command line to
758 prevent the dictionary from being cleared between their
759 executions is no longer supported. All syntax files are now
760 executed as if `+' had been specified.
762 * The -d/--define and -u/--undef command line options are no
763 longer supported. Instead, use /usr/bin/env or shell primitives
764 to define or clear environment variables before invoking PSPP.
766 * If a syntax file named named `rc' is found in a configuration
767 directory (such as $HOME/.pspp), it is executed before any
768 syntax file specified on the command line. The -r or
769 --no-statrc command line option may be used to disable this
774 * Output configuration options have changed. Please refer to the
775 manual for a full description of the available options.
777 In consequence, you will need to reinstall your "devices" file.
778 "make install" will do this for you.
780 * Most error messages are now written to PSPP output files by
781 default. SET ERROR can be used to disable this behavior.
783 * When invoked interactively, PSPP now by default produces output
784 on the terminal, piping it through the "more" program.
785 Previously, by default output was written only to file
786 pspp.list. On most terminals, the page length used for output
787 automatically adapts to the terminal size, even if the terminal
792 - This driver now supports charts in output. Charts are written
793 as separate files that the main output file refers to. By
794 default, charts are written in PNG format to files named
795 pspp-1.png, pspp-2.png, and so on.
797 - Configurations are provided that use VT100 (and xterm)
798 line-drawing characters in tables. The option "-o list-vt100"
799 requests use of this device for output to pspp.list.
803 - The default paper size is now determined using the PAPERSIZE
804 environment variable, or the LC_PAPER locale category on
805 systems that support it. If these are not set, the default is
806 now A4, instead of US letter. To make US letter the default,
807 set PAPERSIZE to "letter" in your environment.
809 - Font metrics are now read from AFM files, instead of
810 Groff-format metrics files. PostScript fonts can now be
813 In consequence, you will need to install an AFM file for each
814 font used in PostScript output. "make install" will install
815 AFM files for the standard PostScript fonts, including the
816 ones that the PostScript driver uses by default.
818 - Standard paper sizes no longer need to be specified through a
819 configuration file. The "papersize" configuration file is no
820 longer needed, or supported.
822 - The PostScript prologue is no longer obtained from the
823 "ps-prologue" configuration file. This configuration file is
824 no longer needed, or supported.
828 - The HTML prologue is no longer obtained from the
829 "html-prologue" configuration file. This configuration file
830 is no longer needed, or supported.
832 Command language changes:
834 * The following commands are new:
836 - GET DATA, which currently supports reading Gnumeric files and
837 text data files. It will be extended later to read other
838 types of foreign data.
840 - CD, to change the current directory.
842 - INSERT, to execute a syntax file.
844 - DELETE VARIABLES, to remove variables from the active file
847 - ADD DOCUMENT, to add text to active file documents.
849 - CLOSE FILE HANDLE (a PSPP extension; see below).
851 - XEXPORT, a PSPP extension that is a transformation equivalent
854 * The following functions for transformation expressions are new:
856 - DATEDIFF, for computing the difference of two dates.
858 - DATESUM, for advancing a date by a specified duration.
860 - VALUELABEL, to obtain the value label for a value.
862 * PSPP now supports very long string variables (over 255 bytes
865 * MATCH FILES now supports the FIRST and LAST subcommands.
867 * Previous versions of PSPP prohibited using commands to both read and
868 write a single file at the same time. Now, PSPP allows this, and
869 the new version of the file atomically replaces the old version.
871 * The following commands are no longer available. They will be
872 re-implemented in a later release:
874 - CLEAR TRANSFORMATIONS
880 * The PROCESS IF command, which was deprecated, has been removed.
881 You may replace any usage of it by SELECT IF following
882 TEMPORARY, which has the same effect.
884 * The output format for variables created by VECTOR may now be
885 specified as part of the VECTOR syntax.
887 "Scratch files", a new PSPP extension:
889 A scratch file, like a system file, consists of a dictionary and
890 any number of cases. Small scratch files are stored in memory;
891 one that grows too large is written to disk. By default, any file
892 handle whose name begins with # is assumed to refer to a scratch
895 Scratch files can be used just about anywhere a system or portable
896 file can be used. Also, portable files are now allowed in most
897 places that system files were allowed in previous PSPP version.
899 A new CLOSE FILE HANDLE command allows the storage associated with
900 scratch files to be freed. It also allows file handles to be
901 reassigned to new files.
903 For more information on scratch files, refer to the "File Handles"
904 section in the PSPP manual. For specifics of what commands now
905 allow what kinds of files to be specified, refer to the
906 documentation on those particular commands.
910 * Binary formats and IBM/360 formats, including ASCII/EBCDIC
911 translation, are now supported. Use FILE HANDLE to specify the
912 format of these files.
914 * Little-endian, big-endian, and VAX-endian formats are now
915 supported for integer binary formats when reading and writing
916 data files. The new RIB and WIB subcommands on the SET command
917 control endianness of integer data. The default is the host's
920 * IEEE 754, VAX, and IBM hexadecimal formats are now supported for
921 floating point binary formats when reading and writing data
922 files. The new RRB and WRB subcommands on the SET command
923 control the floating point format. The default is the host's
924 native floating point format.
926 * DATA LIST now supports the SKIP subcommand, to skip records at
927 the beginning of a file. For compatibility, DATA LIST now
928 treats N format as F format for FREE and LIST format input.
930 * The SAVE and XSAVE commands now support the UNSELECTED,
931 PERMISSIONS, NAMES, and MAP subcommands.
933 * The EXPORT command has been re-implemented to obtain better
934 results. Support for the UNSELECTED, DIGITS, and TYPE
935 subcommands has been added.
937 * For compatibility, PRINT now inserts a space at the beginning of
938 every output line, even lines that would otherwise be blank,
939 when OUTFILE is specified. (The behavior of WRITE is
942 * For compatibility, PRINT EJECT now inserts the digit `1' at the
943 beginning of each line that should begin a new page.
945 * For compatibility, WRITE now outputs the system-missing value as
946 a field filled with spaces. Binary formats are an exception.
947 (The behavior of PRINT is unchanged.)
951 * Input and output format descriptions have been rewritten. They
952 now precisely describe what is accepted on input and written on
955 * The descriptions of the PSPP system and portable file formats
956 have been extensively revised and improved.
958 For developers, the build system now requires Autoconf 2.60 and
961 Changes from 0.3.0 to 0.4.0:
963 Changes in build dependencies:
965 * The GNU Scientific Library (libgsl), version 1.6 or later, is
968 * libplot from GNU plotutils is optional. Without it, the new
969 graphing features will not work. If you do not have it
970 installed, you must run `configure' with --without-libplot.
972 * libgmp2 is no longer a dependency.
974 Newly implemented commands and statistical features:
976 * EXAMINE, including its graphing features.
978 * FREQUENCIES now supports percentiles.
986 * SORT CASES now sorts stably, that is, two cases with equal sort
987 criteria will be in the same relative order before and after the
990 * T-TEST (re-written).
992 * DATE and USE. These commands are parsed but otherwise ignored,
993 to enhance compatibility with certain command files that invoke
996 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
997 currently have no effect on PSPP output, but their values are
998 written to and read from system files and thus may affect
999 third-party software.
1001 * SET EPOCH implemented.
1003 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
1006 * FILE HANDLE now supports custom tab widths.
1008 Long variable names (and other identifiers) are now supported. Up
1009 to the first 64 bytes of each identifier is significant. PSPP now
1010 reads and writes system files compatible with SPSS version 12.
1012 New --algorithm and --syntax command line options allow
1013 SPSS-compatible or enhanced modes to be selected.
1015 Support for transformation expressions has been rewritten and
1016 significantly improved. Refer to the manual for details.
1018 Calculation of moments (mean, standard deviation, kurtosis,
1019 skewness) has been rewritten and should now be more accurate. In
1020 --algorithm=enhanced mode moments may be more accurate than SPSS in
1023 Numerous bugs have been fixed, too many to mention here. Many new
1024 tests have been added, leading to the discovery and fixing of many
1027 The ASCII output driver can now squeeze multiple blank lines into
1030 Much of the code has been rewritten and refactored. It is now much
1033 The FILE TYPE and REPEATING DATA commands have been disabled for
1034 this release because their implementations were deemed too buggy to
1035 be useful. They will be fixed and replaced in a future release.
1037 New pspp-mode for Emacs (in pspp-mode.el).
1039 Added rudimentary command-line completion for interactive input.
1041 lib/julcal and lib/dcdflib are no longer used, so they have been
1044 For developers, the build system now requires Autoconf 2.58 and
1045 Automake 1.7. The included gettext has been updated to version
1048 Some reports state that Texinfo 4.8, the latest version, may be
1049 necessary to successfully format the documentation on some systems.
1051 Version 0.3.0 changes since 0.2.3:
1055 * Using alphanumeric variables in functions under AGGREGATE
1058 * Under certain circumstances, the final case would be omitted
1059 from the results of an AGGREGATE operation. Fixed.
1061 * Undefined behavior was invoked by referencing a freed pointer
1062 under certain circumstances. Fixed.
1064 * A wrong record size was displayed when paging the active file to
1067 * Not having enough temporary space for sorting caused a core
1070 * Syntax errors in function descriptions on AGGREGATE caused core
1073 * A null pointer was dereferenced, causing a core dump, when
1074 PERCENTILES was specified on FREQUENCIES. This fixes the
1075 problem, but PSPP still doesn't calculate percentiles.
1077 * SORT always sorted in ascending order. Fixed.
1079 * Some minor memory leaks in the expression parser were removed.
1081 * Many assertions fixed for strict ANSI C compliance.
1085 * SET ECHO ON now implemented, but turned off by default.
1087 * PRINT specifier supported on END REPEAT.
1091 * System libgmp2 library is used if installed instead of
1092 unconditionally using the included libgmp2 subset.
1094 * Extensive code cleanup, which continues.
1096 * Added CORRELATIONS command parser, but not implemented.
1098 Version 0.2.3 changes since 0.2.2:
1102 * SPLIT FILE with a string variable caused a core dump. Fixed.
1104 * Nested INCLUDEs didn't work. Fixed.
1106 * The MATCH FILES procedure set the values of variables not present
1107 to 0. It should have been SYSMIS. This is now fixed.
1109 * The REMARK command was too aggressive about skipping lines. It
1110 didn't like being the last command in a file.
1112 * Comment parsing wasn't consistent with the rest of the code in its
1113 idea of where one command ends and another starts. This meant
1114 that sometimes commands would be mysteriously ignored. Thanks to
1115 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
1117 * The TABLE subcommand on MATCH FILES worked only erratically at
1118 best. This fixes it. Thanks to Dr. Dirk Melcher
1119 <BZN-mdksh@t-online.de> for reporting this bug.
1121 * VARIABLE LABELS rejected a slash before the first variable
1122 specification, contradicting the documentation. Thanks to Walter
1123 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1125 * Because of an incorrect optimization in memory allocation,
1126 CROSSTABS sometimes segfaulted when asked to output multiple
1127 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1130 * CROSSTABS didn't display value labels for column and row
1131 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1134 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1135 <BZN-mdksh@t-online.de> for reporting this bug.
1137 * The TABLE subcommand on MATCH FILES worked only erratically at
1138 best. This fixes it. Thanks to Dr. Dirk Melcher
1139 <BZN-mdksh@t-online.de> for reporting this bug.
1141 * VARIABLE LABELS rejected a slash before the first variable
1142 specification, contradicting the documentation. Thanks to Walter
1143 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1145 * Because of an incorrect optimization in memory allocation,
1146 CROSSTABS sometimes segfaulted when asked to output multiple
1147 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1150 * CROSSTABS didn't display value labels for column and row
1151 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1154 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1155 <BZN-mdksh@t-online.de> for reporting this bug.
1157 * MATCH FILES corrupted memory and dumped core on some syntax
1160 * MATCH FILES should set numeric values not available to the
1161 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
1162 <BZN-mdksh@t-online.de> for reporting this bug.
1164 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
1165 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
1169 * Some systems didn't like the way open_file was coded. Thanks to
1170 Hankin <hankin@rogue.consultco.com> for pointing this out.
1172 * The SAVE procedure didn't save long string variables properly.
1173 Fixed by this patch. Thanks to Hankin
1174 <hankin@rogue.consultco.com> for this patch.
1176 * Minor documentation fixes for MATCH FILES.
1178 Version 0.2.2 changes since 0.2.1:
1182 * Fix behavior of PRINT SPACE for negative arguments.
1184 * Fix reading some unusual system files.
1186 * Fix LIST problems with very long variables. Thanks to Hankin
1187 <hankin@dunno.com> for this bug report.
1189 * Fix problems with some string format specifiers.
1191 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
1192 <BZN-mdksh@t-online.de> for reporting this bug.
1194 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
1195 Hankin <hankin@dunno.com> again on this one.
1197 * Sometimes you may encounter a PSPP script that has to be
1198 interpreted in interactive mode. Now you can use the -i flag to
1201 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
1202 `unused variable' warnings under gcc 2.7.2.3, fixing this will
1207 * The files in gmp need the internationalization directory in
1208 their include path. Thanks to OKUJI Yoshinori
1209 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
1211 Version 0.2.1 changes since 0.2.0:
1215 * Remember to include examples/ directory in distribution :-)
1217 * Fixed gmp compile problems for some non-i386 architectures.
1218 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
1221 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
1222 matches the documented behavior exactly, and error messages are
1223 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
1225 Version 0.2.0 changes since 0.1.0:
1227 Procedures now implemented:
1228 * CROSSTABS. Please see documentation for caveats.
1230 Transformations and utilities now implemented:
1233 * CLEAR TRANSFORMATIONS
1234 * DISPLAY (all subcommands).
1245 Support for input and output through pipes: "|command" and
1246 "command|" filenames; support for special filenames "-", "stdin",
1249 New command-line features:
1250 * New option --testing-mode: Invoke heuristics to assist testing.
1251 * New option --safer, -s: Don't allow certain unsafe operations.
1252 * New option --command=CMD, -c CMD: Perform literal command CMD.
1253 * rc file ~/.pspp/rc is executed before any other files.
1254 * Now multiple syntax files can be specified.
1256 Operator LAG is now implemented.
1258 Added missing FILE subcommand to REREAD.
1260 Table output manager completely rewritten.
1262 Device configuration file syntax changed. You will need to
1263 reinstall your `devices' file.
1265 New output driver for HTML.
1267 PostScript driver and prologue simplified.
1269 Many bugs fixed. General source-code cleanup.
1271 Added Texinfo documentation for:
1272 * PSPP system file format
1273 * PSPP portable file format
1274 * How to write input for q2c parser generator
1277 PSPP language is now fully documented. Please report any
1278 inaccuracies or omissions in the documentation.
1280 Changes for version 0.1.0:
1282 First public release. For changes from unreleased development
1283 versions, please see ONEWS.
1285 ----------------------------------------------------------------------
1286 Copyright information:
1288 Permission is granted to anyone to make or distribute verbatim
1289 copies of this document as received, in any medium, provided that
1290 the copyright notice and this permission notice are preserved, thus
1291 giving the recipient permission to redistribute in turn.
1293 Permission is granted to distribute modified versions of this
1294 document, or of portions of it, under the above conditions,
1295 provided also that they carry prominent notices stating who last
1299 version-control: never