1 PSPP NEWS -- history of user-visible changes.
2 Copyright (C) 1996-2000, 2008-2016, 2017 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 0.10.2 to 0.10.4
9 * The REGRESSION command now has a /ORIGIN subcommand to perform
10 regression through the origin.
12 * The FACTOR command can now analyse matrix files prepared with MATRIX DATA.
14 * The MATRIX DATA command has been added.
16 * Some inappropriate properties in selection dialogs have been corrected.
18 * A bug which could cause the HTML driver to go into a tight loop
21 * An error in the FREQUENCIES procedure, where the word "Mean" was
22 printed when "Variance" was appropriate has been fixed.
24 * The ncurses library is no longer required or used.
26 * A bug where the Mann-Whitney test would give misleading results
27 if run on multiple variables and MISSING=ANALAYSIS was specified
30 * Gtk+3.14.5 or later must now be used when building.
32 * Graphical user interface changes:
34 ** The code implementing the sheet rendering has been removed. Instead we
35 use a third party library: spread-sheet-widget.
37 ** There is a new menu: Edit|Options
39 ** The Non Parametric Statistics Menu has a new item: "K Independent Samples".
41 * The AUTORECODE command now accepts an optional / before INTO.
43 * The short form of the VECTOR command can now create string variables.
45 Changes from 0.10.1 to 0.10.2:
47 * CROSSTABS implements a new COUNT subcommand to round case or cell
50 * Help will be opened as HTML in default browser if yelp
53 * When plotting scatterplots with only one dataset (the simple case)
54 the colour used for the dataset is now black. The previous default
55 from the Tango palette was too faint to see easily.
57 * The varible info dialog could previously only paste a single variable.
58 Now it can paste multiple variables.
60 * Bug fixes, including the following:
62 - T-test with independent samples GUI crashed with string
63 type variable as group variable.
65 - The variable info dialog showed the previous selected variable
66 superimposed with the currently selected one.
68 - The GLM command did not properly deal with missing values. This
71 Changes from 0.10.0 to 0.10.1:
73 * Bug fixes, including the following:
75 - A bug where certain dialog boxes could not be properly populated
78 - Various commands have been hardened against errors when called
81 * Translation updates. Thanks to our translators!
83 Changes from 0.8.5 to 0.10.0:
85 * The QUICK CLUSTER command has a /PRINT subcommand which shows
86 the initial cluster centres and the final cluster membership of
87 each case. The clustering algorithm has also been updated, so
88 as to produce better separated clusters.
90 * A Russian localisation has been contributed.
92 * The GRAPH command now has a /BAR subcommand to draw barcharts.
94 * If the DECIMAL character is set to COMMA then the ',' character
95 will not be treated as a separator by DATA LIST.
97 * The graphical user interface (psppire) has been changed as follows:
99 - It now uses Gtk+ version 3 instead of version 2. Accordingly, it has a
100 somewhat different look and feel.
102 - There is now a Graphs menu to access the GRAPH command.
104 - The status of dialog box widgets are now preserved between calls
105 to the same dialog box for the same dataset.
107 - The dialog box for the Logistic Regression command will now
108 infer that string variables or any varible with a "measure"
109 of Nominal or Ordinal are to be treated as categorical variables
110 and will generate syntax accordingly.
112 * The pspp-convert utility can now decrypt encrypted syntax files.
113 The encrypted syntax file format is unacceptably insecure, so to
114 discourage its use PSPP and PSPPIRE do not directly read or write
121 * The following functions for transformation expressions are new:
123 - REPLACE, for search-and-replace of one string with another.
125 - STRUNC, to truncate a string and trim trailing spaces.
127 - MEDIAN, to compute the median of its arguments.
129 - The TRUNC function in expressions now supports additional arguments
130 for truncating to values other than integers and to indicate a level
131 of rounding fuzz. The default rounding fuzz may now be controlled
132 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
134 * Bug fixes, including the following notable ones:
136 - The correlation coefficient in the paired samples t-test
137 procedure is now correctly calculated when presented with
140 - The ESCAPE subcommand has been removed from GET DATA /TYPE=TXT.
141 For compatibility, the behavior that ESCAPE enabled is now the
142 default and only supported behavior.
144 - Rendering of the variable and data sheets in right-to-left locales
147 - The Mann-Whitney test, when run on a dataset containing values
148 of the group variable, other than those defining the test groups,
149 would incorrectly calculate the ranks. This has been corrected.
151 * The IMPORTCASES subcommand on GET DATA is now ignored, for
154 Changes from 0.8.4 to 0.8.5:
156 * The FREQUENCIES and CROSSTABS commands can now generate barcharts.
158 * The FACTOR command can now perform PROMAX rotations.
160 * SPSS/PC+ system files are now supported on GET and other commands
161 that read SPSS system files. The pspp-convert program can now read
162 SPSS/PC+ system files. Writing the obsolete SPSS/PC+ system file
163 format is not supported.
165 * SYSFILE INFO can now read SPSS/PC+ system files and SPSS portable
168 * FREQUENCIES: A bug was fixed where an assertion failure occured
169 when an empty dataset was presented.
171 * The GRAPH command is now available. Initially it supports
172 scatterplots and histograms.
174 * The RND operator in expressions now supports additional operands
175 for rounding to values other than integers and to indicate a level
176 of rounding fuzz. The default rounding fuzz may now be controlled
177 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
179 Changes from 0.8.3 to 0.8.4:
181 * Formatting of SYSFILE INFO output was made easier to read.
183 * Bug fixes, including the following notable ones:
185 - FREQUENCIES works properly for string variables. (This bug was
186 introduced in 0.8.2.)
188 - CROSSTABS now correctly computes all of the measures that it
189 offers. Some measures have been removed because they were not
192 - The NPAR TESTS calculation of significance for the RUNS
193 subcommand has been corrected.
195 - Planned comparisons in ONEWAY ANOVA now correctly handle negative
198 - The COUNT command now correctly treats missing values as
201 - Conformance fixes to Open Document output format.
203 Changes from 0.8.2 to 0.8.3:
205 * Independent T-Tests displayed the standard error of the difference
206 and the confidence interval for the unequal variances case, where
207 the equal variances case should have been. This has been fixed.
209 * REGRESSION now recognises /STATISTICS=CI(x) which causes confidence
210 intervals for the coefficients to be printed.
212 * When DESCRIPTIVES calculates Z scores, it now omits cases filtered
213 by the current FILTER settings.
215 * PSPPIRE graphical user interface improvements:
217 - Dialog boxes with source variable lists can now choose the sort
218 order; right click and select from the popup menu.
220 - File|Open now allows an encoding to be selected for opening
223 - File|Display Data File Information|External File... now allows an
224 encoding to be selected.
226 - A problem with the Means dialog has been resolved (bug #41433).
228 - Several problems related to the input of spreadsheets have been
229 fixed (bug #41657, #41620
231 * System file related improvements:
233 - With ENCODING="DETECT", SYSFILE INFO can now help the user to
234 pick an encoding for reading a system file that does not identify
237 - SYSFILE INFO now accepts an ENCODING subcommand to specify the
238 character encoding of string data in the system file.
240 - Variable labels over 255 bytes long are now accepted without
241 truncation (bug #41863).
243 - System files that contain duplicate variable names may now be
244 read successfully (bug #41475).
246 Changes from 0.8.1 to 0.8.2:
248 * Charts are now rendered with colours from the Tango palette instead
249 of fully saturated primaries.
251 * Support for new system file variants:
253 - PSPP can now read and write ZCOMPRESSED system files, which
254 compress data much more effectively than older "compressed"
255 files. (The older format is still supported.)
257 - PSPP can now decrypt encrypted system files, using the new
258 pspp-convert utility. The encrypted system file format is
259 unacceptably insecure, so to discourage its use PSPP and PSPPIRE
260 do not directly read or write this format.
262 * Missing values for long string variables are now read from and
263 written to system files in an SPSS-compatible fashion.
265 (Earlier versions of PSPP that supported missing values for long
266 string variables wrote them to system files in an SPSS-incompatible
267 way. To fix the problem, read the system file with this version of
268 PSPP and then save a new copy of it.)
270 * pspp-convert, a new standalone utility for converting SPSS system
271 and portable files to other formats, is now included. The initial
272 version supports comma-separated value files as output format.
273 pspp-convert can also decrypt encrypted system files.
277 - zlib is now a required dependency. (Previously it was optional.)
279 Changes from 0.8.0 to 0.8.1:
285 * Changes to existing commands:
287 - CROSSTABS: The requirement that one expected count must be less than five
288 before Fishers Exact Test will be reported has been removed.
290 * PSPPIRE graphical user interface improvements:
292 - A new set of icons has been contributed.
294 - Syntax windows now parse syntax in "auto" mode, which in practice
295 should mean that both "batch" and "interactive" syntax now works,
296 instead of just "interactive" syntax.
298 - The variable pane of data windows now include a Role column.
302 - System files written by IBM SPSS 21 are now read without warnings.
304 - System files written by "VOXCO INTERVIEWER 4.3" are now read
307 - PSPPIRE should now more gracefully handle syntax files that contain
310 Changes from 0.6.2 to 0.8.0:
316 - DATAFILE ATTRIBUTES
323 - LOGISTIC REGRESSION
327 - PRESERVE and RESTORE
331 - SAVE TRANSLATE to CSV and tab-delimited files
333 - VARIABLE ATTRIBUTES
335 * Changes to existing commands:
337 - AUTORECODE has a new GROUP subcommand.
339 - CROSSTABS has been re-implemented to fix numerous bugs.
341 - EXAMINE: /MISSING=LISTWISE is now the default.
343 - DO REPEAT command has been reimplemented. Now, when DO REPEAT
344 contains an INCLUDE or INSERT command, substitutions are not
345 applied to the included file.
347 - FILE HANDLE has a new ENDS subcommand to select CR or CRLF new-lines.
349 - HOST has been updated to use more modern syntax.
351 - Most commands that work with data files now support a new
354 - MISSING VALUES can now assign missing values to long string
357 - ONEWAY: the POSTHOC subcommand is now implemented.
359 - The following new subcommands to NPAR TESTS have been implemented:
360 COCHRAN, FRIEDMAN, JONCKHEERE-TERPSTRA, KENDALL, KRUSKAL-WALLIS, MANN-WHITNEY,
361 MCNEMAR, SIGN, WILCOXON, and RUNS
363 - SET and SHOW no longer have ENDCMD, NULLINE, PROMPT, CPROMPT, and
364 DPROMPT subcommands. The defaults are now fixed values.
366 - SHOW now has a JOURNAL subcommand, to show the location of the
369 - VALUE LABELS can now assign value labels to long string
372 * Other language changes:
374 - The new DATASET commands replace the "scratch file" PSPP
375 extension, which is no longer supported.
377 - Strings may now include arbitrary Unicode code points specified
378 in hexadecimal, using the syntax U'hhhh'. For example, Unicode
379 code point U+1D11E, the musical G clef character, may be
380 expressed as U'1D11E'.
382 See the "Tokens" section in the PSPP manual for more information.
384 - In previous versions of PSPP, in a string expressed in
385 hexadecimal with X'hh' syntax, the hexadecimal digits expressed
386 bytes in the locale encoding. In this version of PSPP, X'hh'
387 syntax always expresses bytes in UTF-8 encoding.
389 See the "Tokens" section in the PSPP manual for more information.
391 * PSPPIRE graphical user interface improvements:
393 - Added support for non-ASCII characters in strings, labels and
396 - A "Split Window" function is available, which makes it easier to
397 see different parts of a large data file.
399 - Data files can now be opened by specifing their name as the first
400 argument. This means that on a properly configured desktop, double
401 clicking on an icon will open the file.
403 - Foreign formats, such as Gnumeric, OpenDocument and CSV can be imported
404 via using an "intelligent" application assistant dialog.
408 - The new "cairo" output driver supports output in PostScript, PDF,
409 and SVG formats. Its functionality is a superset of that of the
410 "postscript" driver, which has been removed. You must have Cairo
411 and Pango installed to build the "cairo" driver.
413 - Charts are now produced with Cairo and Pango, instead of libplot.
414 Without them, the new graphing features will not work. If you do
415 not have Cairo and Pango installed, you must run `configure' with
418 - The plain text output driver now properly supports multibyte UTF-8
419 characters, including double-width characters and combining
422 - Output to OpenDocument format is now supported.
424 - The HTML output is much improved.
426 * The "pspp" program has a new option --batch (or -b) that selects
427 "batch" syntax mode. In previous versions of PSPP this syntax mode
428 was the default. Now a new "auto" syntax mode is the default. In
429 "auto" mode, PSPP interprets most syntax files correctly regardless
430 of their intended syntax mode.
432 See the "Syntax Variants" section in the PSPP manual for more
435 * The "pspp" program has a new option --syntax-encoding that
436 specifies the encoding for syntax files listed on the command line,
437 as well as the default encoding for syntax files included with
438 INCLUDE or INSERT. The default is to accept the system locale
439 encoding, UTF-8, UTF-16, or UTF-32, automatically detecting which
440 one the system file uses.
442 See the documentation for the INSERT command in the PSPP manual for
445 * Text data files that PRINT and WRITE creates now use the system
446 native line ends by default (CRLF on Windows, LF only elsewhere).
447 Use the new ENDS subcommand on FILE HANDLE to override the default.
449 * A new Perl module allows Perl programs to read and write PSPP
452 * A tutorial chapter has been added to the user manual.
454 Changes from 0.6.1 to 0.6.2:
458 - Dutch, thanks to Harry Thijssen.
460 - Brazilian Portuguese, thanks to Michel Boaventura.
462 Thanks for translations are also due to the coordinators at
463 translationproject.org.
465 * Statistical bug fixes:
467 - REGRESSION: Report correct standard error of the estimate (bug
470 - T-TEST: Report correct significance of paired sample T-test in
471 the common case (bug #26936) and corner cases. Thanks to Mike
472 Griffiths and Matej Cepl for reporting these bugs.
474 * Build fixes and changes:
476 - Fix build with GTK+ 2.17.4 and later.
478 - Make running "make" after running "configure" with different
479 settings reliably rebuild version.c.
481 - Cygwin and MinGW build fixes.
483 - Fixes for building with recent gnulib.
485 - The Makefile now honors two new variables, PSPP_LDFLAGS and
486 PSPPIRE_LDFLAGS, that affect linking of the PSPP and PSPPIRE
487 binaries, respectively. This makes building easier for some
490 - Fixes for "configure --enable-relocatable" (bug #25508).
492 * Data file bug fixes and changes:
494 - Fix reading text data files that contain a mix of white space
495 and commas. Now "a ,b" is treated as two fields containing "a"
496 and "b"; previously it was treated as three, with an empty field
499 - Fix writing corrupted .sav files on Windows.
501 - Fix writing variable labels longer than 252 bytes to save files.
502 Thanks to Robert Westlund for reporting this bug.
504 - Fix writing corrupted .por files (bug #26034).
506 - Fix reading .por files whose initial lines are not padded out
507 with spaces as expected.
509 - PSPP will no longer issue warnings about some .sav file records
510 or values that it does not understand. These warnings were
511 harmless, but needlessly alarmed some users.
513 - Fix crash reading empty string fields from PostgreSQL databases.
515 * Bug fixes that affect PSPP and PSPPIRE:
517 - Users may now control precision of output statistics. Instead
518 of hard coding the width and decimals of output numbers, respect
519 the default format in most instances. Counts are now normally
520 displayed with the format of the weight variable, if any.
522 - Fix crash when an INSERT command specifies the name of a file
523 that does not exist (bug #24569).
525 - Fix crash when CROSSTABS specifies a long-string variable (bugs
528 - Fix crash drawing pie charts with many segments.
530 - Fix crash when NUMERIC specifies an invalid format.
532 * PSPPIRE bug fixes and changes:
534 - On Windows, write the output file to the user's home directory
535 instead of the current directory, to better match user
538 - Some data editor fixes.
542 - Fix typo in BINOMIAL section of user manual (bug #25892).
544 Changes from 0.6.0 to 0.6.1:
546 * Statistical bug fixes:
548 - Report correct standardized regression coefficients in linear
549 regression output (bug #23567).
551 * Bug fixes that affect PSPP and PSPPIRE:
553 - Avoid crash with pie charts (bug #24014).
555 - Don't append % to count totals (bug #24003).
557 - Don't crash on bad input (bug #24031).
559 - Don't crash if "end data." is not left aligned (bug #24115).
561 - Change default workspace value to 64 MB, to avoid unnecessary
562 disk accesses on modern machines.
566 - Add ".sav" or ".por" suffix to filename when saving with Save_As
569 - Make it possible to reopen the output window on Windows (bug
572 - A POSIX regular expression library is now included and used
573 automatically if the host does not have one or has one that is
576 * Build fixes and changes:
578 - Work around bug in GSL that prevented build with recent GCC
579 versions without manually adding -fgnu89-inline to CFLAGS.
581 - Also warn about missing prerequisites as we encounter them (bug
584 - Distribute necessary files to allow users working from the
585 distributed tarball to configure with --enable-gui-tools.
587 - Append $(EXEEXT_FOR_BUILD) to output file name when building
588 q2c, fixing build problems on Windows.
590 - GSL 1.8 or later is now required.
592 - Build errors with --enable-relocatable were fixed.
594 * The German translations were removed, since native German speakers
595 found them too poor to be useful.
597 Changes from 0.4.0 to 0.6.0:
599 * The PSPP license is now version 3 or later of the GNU General
600 Public License. Previously, it was version 2 or later.
602 * PSPP now has a graphical interface, called PSPPIRE. This
603 interface allows you to enter data and variable definitions
604 interactively. Commands may be executed in syntax form, or by
605 using the interactive dialog boxes available from the dropdown
608 * A few sample syntax files are now included in the `examples'
611 * Numerous major and minor bugs have been fixed.
615 * The INSTALL file now reflects the details of how to install
616 PSPP. It is a tailored version of the generic installation
617 instructions, instead of a verbatim copy.
619 * iconv, which is ordinarily installed as part of a Unix-like
620 system, is now required. If you don't have it already, you can
621 install GNU libiconv (http://www.gnu.org/software/libiconv/).
623 * libxml2 and zlib are new optional dependencies. They are
624 required to use PSPP's support for reading Gnumeric files.
626 Statistical procedure changes:
628 * REGRESSION is a new procedure for fitting linear models to data
629 via least-squares estimation.
631 * NPAR TESTS is a new procedure for non-parametric tests. In this
632 release, it supports binomial and chi-square tests.
634 * RANK is a new procedure to rank variables. It supports numerous
637 * FREQUENCIES can now output histograms and pie charts. These
638 features were present in earlier releases, but not documented.
640 User interface changes:
642 * In many situations where PSPP once terminated with a fatal
643 error, PSPP now recovers and continues execution.
645 * PSPP is now able to start up and run even if it cannot find its
648 * Journaling of interactive commands to a disk file is now
649 implemented. By default, journaling is enabled, to a file named
650 `pspp.jnl' in the current directory. SET JOURNAL may be used to
653 * The use of `+' between syntax file names on the command line to
654 prevent the dictionary from being cleared between their
655 executions is no longer supported. All syntax files are now
656 executed as if `+' had been specified.
658 * The -d/--define and -u/--undef command line options are no
659 longer supported. Instead, use /usr/bin/env or shell primitives
660 to define or clear environment variables before invoking PSPP.
662 * If a syntax file named named `rc' is found in a configuration
663 directory (such as $HOME/.pspp), it is executed before any
664 syntax file specified on the command line. The -r or
665 --no-statrc command line option may be used to disable this
670 * Output configuration options have changed. Please refer to the
671 manual for a full description of the available options.
673 In consequence, you will need to reinstall your "devices" file.
674 "make install" will do this for you.
676 * Most error messages are now written to PSPP output files by
677 default. SET ERROR can be used to disable this behavior.
679 * When invoked interactively, PSPP now by default produces output
680 on the terminal, piping it through the "more" program.
681 Previously, by default output was written only to file
682 pspp.list. On most terminals, the page length used for output
683 automatically adapts to the terminal size, even if the terminal
688 - This driver now supports charts in output. Charts are written
689 as separate files that the main output file refers to. By
690 default, charts are written in PNG format to files named
691 pspp-1.png, pspp-2.png, and so on.
693 - Configurations are provided that use VT100 (and xterm)
694 line-drawing characters in tables. The option "-o list-vt100"
695 requests use of this device for output to pspp.list.
699 - The default paper size is now determined using the PAPERSIZE
700 environment variable, or the LC_PAPER locale category on
701 systems that support it. If these are not set, the default is
702 now A4, instead of US letter. To make US letter the default,
703 set PAPERSIZE to "letter" in your environment.
705 - Font metrics are now read from AFM files, instead of
706 Groff-format metrics files. PostScript fonts can now be
709 In consequence, you will need to install an AFM file for each
710 font used in PostScript output. "make install" will install
711 AFM files for the standard PostScript fonts, including the
712 ones that the PostScript driver uses by default.
714 - Standard paper sizes no longer need to be specified through a
715 configuration file. The "papersize" configuration file is no
716 longer needed, or supported.
718 - The PostScript prologue is no longer obtained from the
719 "ps-prologue" configuration file. This configuration file is
720 no longer needed, or supported.
724 - The HTML prologue is no longer obtained from the
725 "html-prologue" configuration file. This configuration file
726 is no longer needed, or supported.
728 Command language changes:
730 * The following commands are new:
732 - GET DATA, which currently supports reading Gnumeric files and
733 text data files. It will be extended later to read other
734 types of foreign data.
736 - CD, to change the current directory.
738 - INSERT, to execute a syntax file.
740 - DELETE VARIABLES, to remove variables from the active file
743 - ADD DOCUMENT, to add text to active file documents.
745 - CLOSE FILE HANDLE (a PSPP extension; see below).
747 - XEXPORT, a PSPP extension that is a transformation equivalent
750 * The following functions for transformation expressions are new:
752 - DATEDIFF, for computing the difference of two dates.
754 - DATESUM, for advancing a date by a specified duration.
756 - VALUELABEL, to obtain the value label for a value.
758 * PSPP now supports very long string variables (over 255 bytes
761 * MATCH FILES now supports the FIRST and LAST subcommands.
763 * Previous versions of PSPP prohibited using commands to both read and
764 write a single file at the same time. Now, PSPP allows this, and
765 the new version of the file atomically replaces the old version.
767 * The following commands are no longer available. They will be
768 re-implemented in a later release:
770 - CLEAR TRANSFORMATIONS
776 * The PROCESS IF command, which was deprecated, has been removed.
777 You may replace any usage of it by SELECT IF following
778 TEMPORARY, which has the same effect.
780 * The output format for variables created by VECTOR may now be
781 specified as part of the VECTOR syntax.
783 "Scratch files", a new PSPP extension:
785 A scratch file, like a system file, consists of a dictionary and
786 any number of cases. Small scratch files are stored in memory;
787 one that grows too large is written to disk. By default, any file
788 handle whose name begins with # is assumed to refer to a scratch
791 Scratch files can be used just about anywhere a system or portable
792 file can be used. Also, portable files are now allowed in most
793 places that system files were allowed in previous PSPP version.
795 A new CLOSE FILE HANDLE command allows the storage associated with
796 scratch files to be freed. It also allows file handles to be
797 reassigned to new files.
799 For more information on scratch files, refer to the "File Handles"
800 section in the PSPP manual. For specifics of what commands now
801 allow what kinds of files to be specified, refer to the
802 documentation on those particular commands.
806 * Binary formats and IBM/360 formats, including ASCII/EBCDIC
807 translation, are now supported. Use FILE HANDLE to specify the
808 format of these files.
810 * Little-endian, big-endian, and VAX-endian formats are now
811 supported for integer binary formats when reading and writing
812 data files. The new RIB and WIB subcommands on the SET command
813 control endianness of integer data. The default is the host's
816 * IEEE 754, VAX, and IBM hexadecimal formats are now supported for
817 floating point binary formats when reading and writing data
818 files. The new RRB and WRB subcommands on the SET command
819 control the floating point format. The default is the host's
820 native floating point format.
822 * DATA LIST now supports the SKIP subcommand, to skip records at
823 the beginning of a file. For compatibility, DATA LIST now
824 treats N format as F format for FREE and LIST format input.
826 * The SAVE and XSAVE commands now support the UNSELECTED,
827 PERMISSIONS, NAMES, and MAP subcommands.
829 * The EXPORT command has been re-implemented to obtain better
830 results. Support for the UNSELECTED, DIGITS, and TYPE
831 subcommands has been added.
833 * For compatibility, PRINT now inserts a space at the beginning of
834 every output line, even lines that would otherwise be blank,
835 when OUTFILE is specified. (The behavior of WRITE is
838 * For compatibility, PRINT EJECT now inserts the digit `1' at the
839 beginning of each line that should begin a new page.
841 * For compatibility, WRITE now outputs the system-missing value as
842 a field filled with spaces. Binary formats are an exception.
843 (The behavior of PRINT is unchanged.)
847 * Input and output format descriptions have been rewritten. They
848 now precisely describe what is accepted on input and written on
851 * The descriptions of the PSPP system and portable file formats
852 have been extensively revised and improved.
854 For developers, the build system now requires Autoconf 2.60 and
857 Changes from 0.3.0 to 0.4.0:
859 Changes in build dependencies:
861 * The GNU Scientific Library (libgsl), version 1.6 or later, is
864 * libplot from GNU plotutils is optional. Without it, the new
865 graphing features will not work. If you do not have it
866 installed, you must run `configure' with --without-libplot.
868 * libgmp2 is no longer a dependency.
870 Newly implemented commands and statistical features:
872 * EXAMINE, including its graphing features.
874 * FREQUENCIES now supports percentiles.
882 * SORT CASES now sorts stably, that is, two cases with equal sort
883 criteria will be in the same relative order before and after the
886 * T-TEST (re-written).
888 * DATE and USE. These commands are parsed but otherwise ignored,
889 to enhance compatibility with certain command files that invoke
892 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
893 currently have no effect on PSPP output, but their values are
894 written to and read from system files and thus may affect
895 third-party software.
897 * SET EPOCH implemented.
899 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
902 * FILE HANDLE now supports custom tab widths.
904 Long variable names (and other identifiers) are now supported. Up
905 to the first 64 bytes of each identifier is significant. PSPP now
906 reads and writes system files compatible with SPSS version 12.
908 New --algorithm and --syntax command line options allow
909 SPSS-compatible or enhanced modes to be selected.
911 Support for transformation expressions has been rewritten and
912 significantly improved. Refer to the manual for details.
914 Calculation of moments (mean, standard deviation, kurtosis,
915 skewness) has been rewritten and should now be more accurate. In
916 --algorithm=enhanced mode moments may be more accurate than SPSS in
919 Numerous bugs have been fixed, too many to mention here. Many new
920 tests have been added, leading to the discovery and fixing of many
923 The ASCII output driver can now squeeze multiple blank lines into
926 Much of the code has been rewritten and refactored. It is now much
929 The FILE TYPE and REPEATING DATA commands have been disabled for
930 this release because their implementations were deemed too buggy to
931 be useful. They will be fixed and replaced in a future release.
933 New pspp-mode for Emacs (in pspp-mode.el).
935 Added rudimentary command-line completion for interactive input.
937 lib/julcal and lib/dcdflib are no longer used, so they have been
940 For developers, the build system now requires Autoconf 2.58 and
941 Automake 1.7. The included gettext has been updated to version
944 Some reports state that Texinfo 4.8, the latest version, may be
945 necessary to successfully format the documentation on some systems.
947 Version 0.3.0 changes since 0.2.3:
951 * Using alphanumeric variables in functions under AGGREGATE
954 * Under certain circumstances, the final case would be omitted
955 from the results of an AGGREGATE operation. Fixed.
957 * Undefined behavior was invoked by referencing a freed pointer
958 under certain circumstances. Fixed.
960 * A wrong record size was displayed when paging the active file to
963 * Not having enough temporary space for sorting caused a core
966 * Syntax errors in function descriptions on AGGREGATE caused core
969 * A null pointer was dereferenced, causing a core dump, when
970 PERCENTILES was specified on FREQUENCIES. This fixes the
971 problem, but PSPP still doesn't calculate percentiles.
973 * SORT always sorted in ascending order. Fixed.
975 * Some minor memory leaks in the expression parser were removed.
977 * Many assertions fixed for strict ANSI C compliance.
981 * SET ECHO ON now implemented, but turned off by default.
983 * PRINT specifier supported on END REPEAT.
987 * System libgmp2 library is used if installed instead of
988 unconditionally using the included libgmp2 subset.
990 * Extensive code cleanup, which continues.
992 * Added CORRELATIONS command parser, but not implemented.
994 Version 0.2.3 changes since 0.2.2:
998 * SPLIT FILE with a string variable caused a core dump. Fixed.
1000 * Nested INCLUDEs didn't work. Fixed.
1002 * The MATCH FILES procedure set the values of variables not present
1003 to 0. It should have been SYSMIS. This is now fixed.
1005 * The REMARK command was too aggressive about skipping lines. It
1006 didn't like being the last command in a file.
1008 * Comment parsing wasn't consistent with the rest of the code in its
1009 idea of where one command ends and another starts. This meant
1010 that sometimes commands would be mysteriously ignored. Thanks to
1011 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
1013 * The TABLE subcommand on MATCH FILES worked only erratically at
1014 best. This fixes it. Thanks to Dr. Dirk Melcher
1015 <BZN-mdksh@t-online.de> for reporting this bug.
1017 * VARIABLE LABELS rejected a slash before the first variable
1018 specification, contradicting the documentation. Thanks to Walter
1019 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1021 * Because of an incorrect optimization in memory allocation,
1022 CROSSTABS sometimes segfaulted when asked to output multiple
1023 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1026 * CROSSTABS didn't display value labels for column and row
1027 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1030 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1031 <BZN-mdksh@t-online.de> for reporting this bug.
1033 * The TABLE subcommand on MATCH FILES worked only erratically at
1034 best. This fixes it. Thanks to Dr. Dirk Melcher
1035 <BZN-mdksh@t-online.de> for reporting this bug.
1037 * VARIABLE LABELS rejected a slash before the first variable
1038 specification, contradicting the documentation. Thanks to Walter
1039 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1041 * Because of an incorrect optimization in memory allocation,
1042 CROSSTABS sometimes segfaulted when asked to output multiple
1043 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1046 * CROSSTABS didn't display value labels for column and row
1047 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1050 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1051 <BZN-mdksh@t-online.de> for reporting this bug.
1053 * MATCH FILES corrupted memory and dumped core on some syntax
1056 * MATCH FILES should set numeric values not available to the
1057 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
1058 <BZN-mdksh@t-online.de> for reporting this bug.
1060 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
1061 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
1065 * Some systems didn't like the way open_file was coded. Thanks to
1066 Hankin <hankin@rogue.consultco.com> for pointing this out.
1068 * The SAVE procedure didn't save long string variables properly.
1069 Fixed by this patch. Thanks to Hankin
1070 <hankin@rogue.consultco.com> for this patch.
1072 * Minor documentation fixes for MATCH FILES.
1074 Version 0.2.2 changes since 0.2.1:
1078 * Fix behavior of PRINT SPACE for negative arguments.
1080 * Fix reading some unusual system files.
1082 * Fix LIST problems with very long variables. Thanks to Hankin
1083 <hankin@dunno.com> for this bug report.
1085 * Fix problems with some string format specifiers.
1087 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
1088 <BZN-mdksh@t-online.de> for reporting this bug.
1090 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
1091 Hankin <hankin@dunno.com> again on this one.
1093 * Sometimes you may encounter a PSPP script that has to be
1094 interpreted in interactive mode. Now you can use the -i flag to
1097 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
1098 `unused variable' warnings under gcc 2.7.2.3, fixing this will
1103 * The files in gmp need the internationalization directory in
1104 their include path. Thanks to OKUJI Yoshinori
1105 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
1107 Version 0.2.1 changes since 0.2.0:
1111 * Remember to include examples/ directory in distribution :-)
1113 * Fixed gmp compile problems for some non-i386 architectures.
1114 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
1117 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
1118 matches the documented behavior exactly, and error messages are
1119 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
1121 Version 0.2.0 changes since 0.1.0:
1123 Procedures now implemented:
1124 * CROSSTABS. Please see documentation for caveats.
1126 Transformations and utilities now implemented:
1129 * CLEAR TRANSFORMATIONS
1130 * DISPLAY (all subcommands).
1141 Support for input and output through pipes: "|command" and
1142 "command|" filenames; support for special filenames "-", "stdin",
1145 New command-line features:
1146 * New option --testing-mode: Invoke heuristics to assist testing.
1147 * New option --safer, -s: Don't allow certain unsafe operations.
1148 * New option --command=CMD, -c CMD: Perform literal command CMD.
1149 * rc file ~/.pspp/rc is executed before any other files.
1150 * Now multiple syntax files can be specified.
1152 Operator LAG is now implemented.
1154 Added missing FILE subcommand to REREAD.
1156 Table output manager completely rewritten.
1158 Device configuration file syntax changed. You will need to
1159 reinstall your `devices' file.
1161 New output driver for HTML.
1163 PostScript driver and prologue simplified.
1165 Many bugs fixed. General source-code cleanup.
1167 Added Texinfo documentation for:
1168 * PSPP system file format
1169 * PSPP portable file format
1170 * How to write input for q2c parser generator
1173 PSPP language is now fully documented. Please report any
1174 inaccuracies or omissions in the documentation.
1176 Changes for version 0.1.0:
1178 First public release. For changes from unreleased development
1179 versions, please see ONEWS.
1181 ----------------------------------------------------------------------
1182 Copyright information:
1184 Permission is granted to anyone to make or distribute verbatim
1185 copies of this document as received, in any medium, provided that
1186 the copyright notice and this permission notice are preserved, thus
1187 giving the recipient permission to redistribute in turn.
1189 Permission is granted to distribute modified versions of this
1190 document, or of portions of it, under the above conditions,
1191 provided also that they carry prominent notices stating who last
1195 version-control: never