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 * A bug where the Mann-Whitney test would give misleading results
10 if run on multiple variables and MISSING=ANALAYSIS was specified
13 * Gtk+3.14.5 or later must now be used when building.
15 * The AUTORECODE command now accepts an optional / before INTO.
17 * The short form of the VECTOR command can now create string variables.
19 Changes from 0.10.1 to 0.10.2:
21 * CROSSTABS implements a new COUNT subcommand to round case or cell
24 * Help will be opened as HTML in default browser if yelp
27 * When plotting scatterplots with only one dataset (the simple case)
28 the colour used for the dataset is now black. The previous default
29 from the Tango palette was too faint to see easily.
31 * The varible info dialog could previously only paste a single variable.
32 Now it can paste multiple variables.
34 * Bug fixes, including the following:
36 - T-test with independent samples GUI crashed with string
37 type variable as group variable.
39 - The variable info dialog showed the previous selected variable
40 superimposed with the currently selected one.
42 - The GLM command did not properly deal with missing values. This
45 Changes from 0.10.0 to 0.10.1:
47 * Bug fixes, including the following:
49 - A bug where certain dialog boxes could not be properly populated
52 - Various commands have been hardened against errors when called
55 * Translation updates. Thanks to our translators!
57 Changes from 0.8.5 to 0.10.0:
59 * The QUICK CLUSTER command has a /PRINT subcommand which shows
60 the initial cluster centres and the final cluster membership of
61 each case. The clustering algorithm has also been updated, so
62 as to produce better separated clusters.
64 * A Russian localisation has been contributed.
66 * The GRAPH command now has a /BAR subcommand to draw barcharts.
68 * If the DECIMAL character is set to COMMA then the ',' character
69 will not be treated as a separator by DATA LIST.
71 * The graphical user interface (psppire) has been changed as follows:
73 - It now uses Gtk+ version 3 instead of version 2. Accordingly, it has a
74 somewhat different look and feel.
76 - There is now a Graphs menu to access the GRAPH command.
78 - The status of dialog box widgets are now preserved between calls
79 to the same dialog box for the same dataset.
81 - The dialog box for the Logistic Regression command will now
82 infer that string variables or any varible with a "measure"
83 of Nominal or Ordinal are to be treated as categorical variables
84 and will generate syntax accordingly.
86 * The pspp-convert utility can now decrypt encrypted syntax files.
87 The encrypted syntax file format is unacceptably insecure, so to
88 discourage its use PSPP and PSPPIRE do not directly read or write
95 * The following functions for transformation expressions are new:
97 - REPLACE, for search-and-replace of one string with another.
99 - STRUNC, to truncate a string and trim trailing spaces.
101 - MEDIAN, to compute the median of its arguments.
103 - The TRUNC function in expressions now supports additional arguments
104 for truncating to values other than integers and to indicate a level
105 of rounding fuzz. The default rounding fuzz may now be controlled
106 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
108 * Bug fixes, including the following notable ones:
110 - The correlation coefficient in the paired samples t-test
111 procedure is now correctly calculated when presented with
114 - The ESCAPE subcommand has been removed from GET DATA /TYPE=TXT.
115 For compatibility, the behavior that ESCAPE enabled is now the
116 default and only supported behavior.
118 - Rendering of the variable and data sheets in right-to-left locales
121 - The Mann-Whitney test, when run on a dataset containing values
122 of the group variable, other than those defining the test groups,
123 would incorrectly calculate the ranks. This has been corrected.
125 * The IMPORTCASES subcommand on GET DATA is now ignored, for
128 Changes from 0.8.4 to 0.8.5:
130 * The FREQUENCIES and CROSSTABS commands can now generate barcharts.
132 * The FACTOR command can now perform PROMAX rotations.
134 * SPSS/PC+ system files are now supported on GET and other commands
135 that read SPSS system files. The pspp-convert program can now read
136 SPSS/PC+ system files. Writing the obsolete SPSS/PC+ system file
137 format is not supported.
139 * SYSFILE INFO can now read SPSS/PC+ system files and SPSS portable
142 * FREQUENCIES: A bug was fixed where an assertion failure occured
143 when an empty dataset was presented.
145 * The GRAPH command is now available. Initially it supports
146 scatterplots and histograms.
148 * The RND operator in expressions now supports additional operands
149 for rounding to values other than integers and to indicate a level
150 of rounding fuzz. The default rounding fuzz may now be controlled
151 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
153 Changes from 0.8.3 to 0.8.4:
155 * Formatting of SYSFILE INFO output was made easier to read.
157 * Bug fixes, including the following notable ones:
159 - FREQUENCIES works properly for string variables. (This bug was
160 introduced in 0.8.2.)
162 - CROSSTABS now correctly computes all of the measures that it
163 offers. Some measures have been removed because they were not
166 - The NPAR TESTS calculation of significance for the RUNS
167 subcommand has been corrected.
169 - Planned comparisons in ONEWAY ANOVA now correctly handle negative
172 - The COUNT command now correctly treats missing values as
175 - Conformance fixes to Open Document output format.
177 Changes from 0.8.2 to 0.8.3:
179 * Independent T-Tests displayed the standard error of the difference
180 and the confidence interval for the unequal variances case, where
181 the equal variances case should have been. This has been fixed.
183 * REGRESSION now recognises /STATISTICS=CI(x) which causes confidence
184 intervals for the coefficients to be printed.
186 * When DESCRIPTIVES calculates Z scores, it now omits cases filtered
187 by the current FILTER settings.
189 * PSPPIRE graphical user interface improvements:
191 - Dialog boxes with source variable lists can now choose the sort
192 order; right click and select from the popup menu.
194 - File|Open now allows an encoding to be selected for opening
197 - File|Display Data File Information|External File... now allows an
198 encoding to be selected.
200 - A problem with the Means dialog has been resolved (bug #41433).
202 - Several problems related to the input of spreadsheets have been
203 fixed (bug #41657, #41620
205 * System file related improvements:
207 - With ENCODING="DETECT", SYSFILE INFO can now help the user to
208 pick an encoding for reading a system file that does not identify
211 - SYSFILE INFO now accepts an ENCODING subcommand to specify the
212 character encoding of string data in the system file.
214 - Variable labels over 255 bytes long are now accepted without
215 truncation (bug #41863).
217 - System files that contain duplicate variable names may now be
218 read successfully (bug #41475).
220 Changes from 0.8.1 to 0.8.2:
222 * Charts are now rendered with colours from the Tango palette instead
223 of fully saturated primaries.
225 * Support for new system file variants:
227 - PSPP can now read and write ZCOMPRESSED system files, which
228 compress data much more effectively than older "compressed"
229 files. (The older format is still supported.)
231 - PSPP can now decrypt encrypted system files, using the new
232 pspp-convert utility. The encrypted system file format is
233 unacceptably insecure, so to discourage its use PSPP and PSPPIRE
234 do not directly read or write this format.
236 * Missing values for long string variables are now read from and
237 written to system files in an SPSS-compatible fashion.
239 (Earlier versions of PSPP that supported missing values for long
240 string variables wrote them to system files in an SPSS-incompatible
241 way. To fix the problem, read the system file with this version of
242 PSPP and then save a new copy of it.)
244 * pspp-convert, a new standalone utility for converting SPSS system
245 and portable files to other formats, is now included. The initial
246 version supports comma-separated value files as output format.
247 pspp-convert can also decrypt encrypted system files.
251 - zlib is now a required dependency. (Previously it was optional.)
253 Changes from 0.8.0 to 0.8.1:
259 * Changes to existing commands:
261 - CROSSTABS: The requirement that one expected count must be less than five
262 before Fishers Exact Test will be reported has been removed.
264 * PSPPIRE graphical user interface improvements:
266 - A new set of icons has been contributed.
268 - Syntax windows now parse syntax in "auto" mode, which in practice
269 should mean that both "batch" and "interactive" syntax now works,
270 instead of just "interactive" syntax.
272 - The variable pane of data windows now include a Role column.
276 - System files written by IBM SPSS 21 are now read without warnings.
278 - System files written by "VOXCO INTERVIEWER 4.3" are now read
281 - PSPPIRE should now more gracefully handle syntax files that contain
284 Changes from 0.6.2 to 0.8.0:
290 - DATAFILE ATTRIBUTES
297 - LOGISTIC REGRESSION
301 - PRESERVE and RESTORE
305 - SAVE TRANSLATE to CSV and tab-delimited files
307 - VARIABLE ATTRIBUTES
309 * Changes to existing commands:
311 - AUTORECODE has a new GROUP subcommand.
313 - CROSSTABS has been re-implemented to fix numerous bugs.
315 - EXAMINE: /MISSING=LISTWISE is now the default.
317 - DO REPEAT command has been reimplemented. Now, when DO REPEAT
318 contains an INCLUDE or INSERT command, substitutions are not
319 applied to the included file.
321 - FILE HANDLE has a new ENDS subcommand to select CR or CRLF new-lines.
323 - HOST has been updated to use more modern syntax.
325 - Most commands that work with data files now support a new
328 - MISSING VALUES can now assign missing values to long string
331 - ONEWAY: the POSTHOC subcommand is now implemented.
333 - The following new subcommands to NPAR TESTS have been implemented:
334 COCHRAN, FRIEDMAN, JONCKHEERE-TERPSTRA, KENDALL, KRUSKAL-WALLIS, MANN-WHITNEY,
335 MCNEMAR, SIGN, WILCOXON, and RUNS
337 - SET and SHOW no longer have ENDCMD, NULLINE, PROMPT, CPROMPT, and
338 DPROMPT subcommands. The defaults are now fixed values.
340 - SHOW now has a JOURNAL subcommand, to show the location of the
343 - VALUE LABELS can now assign value labels to long string
346 * Other language changes:
348 - The new DATASET commands replace the "scratch file" PSPP
349 extension, which is no longer supported.
351 - Strings may now include arbitrary Unicode code points specified
352 in hexadecimal, using the syntax U'hhhh'. For example, Unicode
353 code point U+1D11E, the musical G clef character, may be
354 expressed as U'1D11E'.
356 See the "Tokens" section in the PSPP manual for more information.
358 - In previous versions of PSPP, in a string expressed in
359 hexadecimal with X'hh' syntax, the hexadecimal digits expressed
360 bytes in the locale encoding. In this version of PSPP, X'hh'
361 syntax always expresses bytes in UTF-8 encoding.
363 See the "Tokens" section in the PSPP manual for more information.
365 * PSPPIRE graphical user interface improvements:
367 - Added support for non-ASCII characters in strings, labels and
370 - A "Split Window" function is available, which makes it easier to
371 see different parts of a large data file.
373 - Data files can now be opened by specifing their name as the first
374 argument. This means that on a properly configured desktop, double
375 clicking on an icon will open the file.
377 - Foreign formats, such as Gnumeric, OpenDocument and CSV can be imported
378 via using an "intelligent" application assistant dialog.
382 - The new "cairo" output driver supports output in PostScript, PDF,
383 and SVG formats. Its functionality is a superset of that of the
384 "postscript" driver, which has been removed. You must have Cairo
385 and Pango installed to build the "cairo" driver.
387 - Charts are now produced with Cairo and Pango, instead of libplot.
388 Without them, the new graphing features will not work. If you do
389 not have Cairo and Pango installed, you must run `configure' with
392 - The plain text output driver now properly supports multibyte UTF-8
393 characters, including double-width characters and combining
396 - Output to OpenDocument format is now supported.
398 - The HTML output is much improved.
400 * The "pspp" program has a new option --batch (or -b) that selects
401 "batch" syntax mode. In previous versions of PSPP this syntax mode
402 was the default. Now a new "auto" syntax mode is the default. In
403 "auto" mode, PSPP interprets most syntax files correctly regardless
404 of their intended syntax mode.
406 See the "Syntax Variants" section in the PSPP manual for more
409 * The "pspp" program has a new option --syntax-encoding that
410 specifies the encoding for syntax files listed on the command line,
411 as well as the default encoding for syntax files included with
412 INCLUDE or INSERT. The default is to accept the system locale
413 encoding, UTF-8, UTF-16, or UTF-32, automatically detecting which
414 one the system file uses.
416 See the documentation for the INSERT command in the PSPP manual for
419 * Text data files that PRINT and WRITE creates now use the system
420 native line ends by default (CRLF on Windows, LF only elsewhere).
421 Use the new ENDS subcommand on FILE HANDLE to override the default.
423 * A new Perl module allows Perl programs to read and write PSPP
426 * A tutorial chapter has been added to the user manual.
428 Changes from 0.6.1 to 0.6.2:
432 - Dutch, thanks to Harry Thijssen.
434 - Brazilian Portuguese, thanks to Michel Boaventura.
436 Thanks for translations are also due to the coordinators at
437 translationproject.org.
439 * Statistical bug fixes:
441 - REGRESSION: Report correct standard error of the estimate (bug
444 - T-TEST: Report correct significance of paired sample T-test in
445 the common case (bug #26936) and corner cases. Thanks to Mike
446 Griffiths and Matej Cepl for reporting these bugs.
448 * Build fixes and changes:
450 - Fix build with GTK+ 2.17.4 and later.
452 - Make running "make" after running "configure" with different
453 settings reliably rebuild version.c.
455 - Cygwin and MinGW build fixes.
457 - Fixes for building with recent gnulib.
459 - The Makefile now honors two new variables, PSPP_LDFLAGS and
460 PSPPIRE_LDFLAGS, that affect linking of the PSPP and PSPPIRE
461 binaries, respectively. This makes building easier for some
464 - Fixes for "configure --enable-relocatable" (bug #25508).
466 * Data file bug fixes and changes:
468 - Fix reading text data files that contain a mix of white space
469 and commas. Now "a ,b" is treated as two fields containing "a"
470 and "b"; previously it was treated as three, with an empty field
473 - Fix writing corrupted .sav files on Windows.
475 - Fix writing variable labels longer than 252 bytes to save files.
476 Thanks to Robert Westlund for reporting this bug.
478 - Fix writing corrupted .por files (bug #26034).
480 - Fix reading .por files whose initial lines are not padded out
481 with spaces as expected.
483 - PSPP will no longer issue warnings about some .sav file records
484 or values that it does not understand. These warnings were
485 harmless, but needlessly alarmed some users.
487 - Fix crash reading empty string fields from PostgreSQL databases.
489 * Bug fixes that affect PSPP and PSPPIRE:
491 - Users may now control precision of output statistics. Instead
492 of hard coding the width and decimals of output numbers, respect
493 the default format in most instances. Counts are now normally
494 displayed with the format of the weight variable, if any.
496 - Fix crash when an INSERT command specifies the name of a file
497 that does not exist (bug #24569).
499 - Fix crash when CROSSTABS specifies a long-string variable (bugs
502 - Fix crash drawing pie charts with many segments.
504 - Fix crash when NUMERIC specifies an invalid format.
506 * PSPPIRE bug fixes and changes:
508 - On Windows, write the output file to the user's home directory
509 instead of the current directory, to better match user
512 - Some data editor fixes.
516 - Fix typo in BINOMIAL section of user manual (bug #25892).
518 Changes from 0.6.0 to 0.6.1:
520 * Statistical bug fixes:
522 - Report correct standardized regression coefficients in linear
523 regression output (bug #23567).
525 * Bug fixes that affect PSPP and PSPPIRE:
527 - Avoid crash with pie charts (bug #24014).
529 - Don't append % to count totals (bug #24003).
531 - Don't crash on bad input (bug #24031).
533 - Don't crash if "end data." is not left aligned (bug #24115).
535 - Change default workspace value to 64 MB, to avoid unnecessary
536 disk accesses on modern machines.
540 - Add ".sav" or ".por" suffix to filename when saving with Save_As
543 - Make it possible to reopen the output window on Windows (bug
546 - A POSIX regular expression library is now included and used
547 automatically if the host does not have one or has one that is
550 * Build fixes and changes:
552 - Work around bug in GSL that prevented build with recent GCC
553 versions without manually adding -fgnu89-inline to CFLAGS.
555 - Also warn about missing prerequisites as we encounter them (bug
558 - Distribute necessary files to allow users working from the
559 distributed tarball to configure with --enable-gui-tools.
561 - Append $(EXEEXT_FOR_BUILD) to output file name when building
562 q2c, fixing build problems on Windows.
564 - GSL 1.8 or later is now required.
566 - Build errors with --enable-relocatable were fixed.
568 * The German translations were removed, since native German speakers
569 found them too poor to be useful.
571 Changes from 0.4.0 to 0.6.0:
573 * The PSPP license is now version 3 or later of the GNU General
574 Public License. Previously, it was version 2 or later.
576 * PSPP now has a graphical interface, called PSPPIRE. This
577 interface allows you to enter data and variable definitions
578 interactively. Commands may be executed in syntax form, or by
579 using the interactive dialog boxes available from the dropdown
582 * A few sample syntax files are now included in the `examples'
585 * Numerous major and minor bugs have been fixed.
589 * The INSTALL file now reflects the details of how to install
590 PSPP. It is a tailored version of the generic installation
591 instructions, instead of a verbatim copy.
593 * iconv, which is ordinarily installed as part of a Unix-like
594 system, is now required. If you don't have it already, you can
595 install GNU libiconv (http://www.gnu.org/software/libiconv/).
597 * libxml2 and zlib are new optional dependencies. They are
598 required to use PSPP's support for reading Gnumeric files.
600 Statistical procedure changes:
602 * REGRESSION is a new procedure for fitting linear models to data
603 via least-squares estimation.
605 * NPAR TESTS is a new procedure for non-parametric tests. In this
606 release, it supports binomial and chi-square tests.
608 * RANK is a new procedure to rank variables. It supports numerous
611 * FREQUENCIES can now output histograms and pie charts. These
612 features were present in earlier releases, but not documented.
614 User interface changes:
616 * In many situations where PSPP once terminated with a fatal
617 error, PSPP now recovers and continues execution.
619 * PSPP is now able to start up and run even if it cannot find its
622 * Journaling of interactive commands to a disk file is now
623 implemented. By default, journaling is enabled, to a file named
624 `pspp.jnl' in the current directory. SET JOURNAL may be used to
627 * The use of `+' between syntax file names on the command line to
628 prevent the dictionary from being cleared between their
629 executions is no longer supported. All syntax files are now
630 executed as if `+' had been specified.
632 * The -d/--define and -u/--undef command line options are no
633 longer supported. Instead, use /usr/bin/env or shell primitives
634 to define or clear environment variables before invoking PSPP.
636 * If a syntax file named named `rc' is found in a configuration
637 directory (such as $HOME/.pspp), it is executed before any
638 syntax file specified on the command line. The -r or
639 --no-statrc command line option may be used to disable this
644 * Output configuration options have changed. Please refer to the
645 manual for a full description of the available options.
647 In consequence, you will need to reinstall your "devices" file.
648 "make install" will do this for you.
650 * Most error messages are now written to PSPP output files by
651 default. SET ERROR can be used to disable this behavior.
653 * When invoked interactively, PSPP now by default produces output
654 on the terminal, piping it through the "more" program.
655 Previously, by default output was written only to file
656 pspp.list. On most terminals, the page length used for output
657 automatically adapts to the terminal size, even if the terminal
662 - This driver now supports charts in output. Charts are written
663 as separate files that the main output file refers to. By
664 default, charts are written in PNG format to files named
665 pspp-1.png, pspp-2.png, and so on.
667 - Configurations are provided that use VT100 (and xterm)
668 line-drawing characters in tables. The option "-o list-vt100"
669 requests use of this device for output to pspp.list.
673 - The default paper size is now determined using the PAPERSIZE
674 environment variable, or the LC_PAPER locale category on
675 systems that support it. If these are not set, the default is
676 now A4, instead of US letter. To make US letter the default,
677 set PAPERSIZE to "letter" in your environment.
679 - Font metrics are now read from AFM files, instead of
680 Groff-format metrics files. PostScript fonts can now be
683 In consequence, you will need to install an AFM file for each
684 font used in PostScript output. "make install" will install
685 AFM files for the standard PostScript fonts, including the
686 ones that the PostScript driver uses by default.
688 - Standard paper sizes no longer need to be specified through a
689 configuration file. The "papersize" configuration file is no
690 longer needed, or supported.
692 - The PostScript prologue is no longer obtained from the
693 "ps-prologue" configuration file. This configuration file is
694 no longer needed, or supported.
698 - The HTML prologue is no longer obtained from the
699 "html-prologue" configuration file. This configuration file
700 is no longer needed, or supported.
702 Command language changes:
704 * The following commands are new:
706 - GET DATA, which currently supports reading Gnumeric files and
707 text data files. It will be extended later to read other
708 types of foreign data.
710 - CD, to change the current directory.
712 - INSERT, to execute a syntax file.
714 - DELETE VARIABLES, to remove variables from the active file
717 - ADD DOCUMENT, to add text to active file documents.
719 - CLOSE FILE HANDLE (a PSPP extension; see below).
721 - XEXPORT, a PSPP extension that is a transformation equivalent
724 * The following functions for transformation expressions are new:
726 - DATEDIFF, for computing the difference of two dates.
728 - DATESUM, for advancing a date by a specified duration.
730 - VALUELABEL, to obtain the value label for a value.
732 * PSPP now supports very long string variables (over 255 bytes
735 * MATCH FILES now supports the FIRST and LAST subcommands.
737 * Previous versions of PSPP prohibited using commands to both read and
738 write a single file at the same time. Now, PSPP allows this, and
739 the new version of the file atomically replaces the old version.
741 * The following commands are no longer available. They will be
742 re-implemented in a later release:
744 - CLEAR TRANSFORMATIONS
750 * The PROCESS IF command, which was deprecated, has been removed.
751 You may replace any usage of it by SELECT IF following
752 TEMPORARY, which has the same effect.
754 * The output format for variables created by VECTOR may now be
755 specified as part of the VECTOR syntax.
757 "Scratch files", a new PSPP extension:
759 A scratch file, like a system file, consists of a dictionary and
760 any number of cases. Small scratch files are stored in memory;
761 one that grows too large is written to disk. By default, any file
762 handle whose name begins with # is assumed to refer to a scratch
765 Scratch files can be used just about anywhere a system or portable
766 file can be used. Also, portable files are now allowed in most
767 places that system files were allowed in previous PSPP version.
769 A new CLOSE FILE HANDLE command allows the storage associated with
770 scratch files to be freed. It also allows file handles to be
771 reassigned to new files.
773 For more information on scratch files, refer to the "File Handles"
774 section in the PSPP manual. For specifics of what commands now
775 allow what kinds of files to be specified, refer to the
776 documentation on those particular commands.
780 * Binary formats and IBM/360 formats, including ASCII/EBCDIC
781 translation, are now supported. Use FILE HANDLE to specify the
782 format of these files.
784 * Little-endian, big-endian, and VAX-endian formats are now
785 supported for integer binary formats when reading and writing
786 data files. The new RIB and WIB subcommands on the SET command
787 control endianness of integer data. The default is the host's
790 * IEEE 754, VAX, and IBM hexadecimal formats are now supported for
791 floating point binary formats when reading and writing data
792 files. The new RRB and WRB subcommands on the SET command
793 control the floating point format. The default is the host's
794 native floating point format.
796 * DATA LIST now supports the SKIP subcommand, to skip records at
797 the beginning of a file. For compatibility, DATA LIST now
798 treats N format as F format for FREE and LIST format input.
800 * The SAVE and XSAVE commands now support the UNSELECTED,
801 PERMISSIONS, NAMES, and MAP subcommands.
803 * The EXPORT command has been re-implemented to obtain better
804 results. Support for the UNSELECTED, DIGITS, and TYPE
805 subcommands has been added.
807 * For compatibility, PRINT now inserts a space at the beginning of
808 every output line, even lines that would otherwise be blank,
809 when OUTFILE is specified. (The behavior of WRITE is
812 * For compatibility, PRINT EJECT now inserts the digit `1' at the
813 beginning of each line that should begin a new page.
815 * For compatibility, WRITE now outputs the system-missing value as
816 a field filled with spaces. Binary formats are an exception.
817 (The behavior of PRINT is unchanged.)
821 * Input and output format descriptions have been rewritten. They
822 now precisely describe what is accepted on input and written on
825 * The descriptions of the PSPP system and portable file formats
826 have been extensively revised and improved.
828 For developers, the build system now requires Autoconf 2.60 and
831 Changes from 0.3.0 to 0.4.0:
833 Changes in build dependencies:
835 * The GNU Scientific Library (libgsl), version 1.6 or later, is
838 * libplot from GNU plotutils is optional. Without it, the new
839 graphing features will not work. If you do not have it
840 installed, you must run `configure' with --without-libplot.
842 * libgmp2 is no longer a dependency.
844 Newly implemented commands and statistical features:
846 * EXAMINE, including its graphing features.
848 * FREQUENCIES now supports percentiles.
856 * SORT CASES now sorts stably, that is, two cases with equal sort
857 criteria will be in the same relative order before and after the
860 * T-TEST (re-written).
862 * DATE and USE. These commands are parsed but otherwise ignored,
863 to enhance compatibility with certain command files that invoke
866 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
867 currently have no effect on PSPP output, but their values are
868 written to and read from system files and thus may affect
869 third-party software.
871 * SET EPOCH implemented.
873 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
876 * FILE HANDLE now supports custom tab widths.
878 Long variable names (and other identifiers) are now supported. Up
879 to the first 64 bytes of each identifier is significant. PSPP now
880 reads and writes system files compatible with SPSS version 12.
882 New --algorithm and --syntax command line options allow
883 SPSS-compatible or enhanced modes to be selected.
885 Support for transformation expressions has been rewritten and
886 significantly improved. Refer to the manual for details.
888 Calculation of moments (mean, standard deviation, kurtosis,
889 skewness) has been rewritten and should now be more accurate. In
890 --algorithm=enhanced mode moments may be more accurate than SPSS in
893 Numerous bugs have been fixed, too many to mention here. Many new
894 tests have been added, leading to the discovery and fixing of many
897 The ASCII output driver can now squeeze multiple blank lines into
900 Much of the code has been rewritten and refactored. It is now much
903 The FILE TYPE and REPEATING DATA commands have been disabled for
904 this release because their implementations were deemed too buggy to
905 be useful. They will be fixed and replaced in a future release.
907 New pspp-mode for Emacs (in pspp-mode.el).
909 Added rudimentary command-line completion for interactive input.
911 lib/julcal and lib/dcdflib are no longer used, so they have been
914 For developers, the build system now requires Autoconf 2.58 and
915 Automake 1.7. The included gettext has been updated to version
918 Some reports state that Texinfo 4.8, the latest version, may be
919 necessary to successfully format the documentation on some systems.
921 Version 0.3.0 changes since 0.2.3:
925 * Using alphanumeric variables in functions under AGGREGATE
928 * Under certain circumstances, the final case would be omitted
929 from the results of an AGGREGATE operation. Fixed.
931 * Undefined behavior was invoked by referencing a freed pointer
932 under certain circumstances. Fixed.
934 * A wrong record size was displayed when paging the active file to
937 * Not having enough temporary space for sorting caused a core
940 * Syntax errors in function descriptions on AGGREGATE caused core
943 * A null pointer was dereferenced, causing a core dump, when
944 PERCENTILES was specified on FREQUENCIES. This fixes the
945 problem, but PSPP still doesn't calculate percentiles.
947 * SORT always sorted in ascending order. Fixed.
949 * Some minor memory leaks in the expression parser were removed.
951 * Many assertions fixed for strict ANSI C compliance.
955 * SET ECHO ON now implemented, but turned off by default.
957 * PRINT specifier supported on END REPEAT.
961 * System libgmp2 library is used if installed instead of
962 unconditionally using the included libgmp2 subset.
964 * Extensive code cleanup, which continues.
966 * Added CORRELATIONS command parser, but not implemented.
968 Version 0.2.3 changes since 0.2.2:
972 * SPLIT FILE with a string variable caused a core dump. Fixed.
974 * Nested INCLUDEs didn't work. Fixed.
976 * The MATCH FILES procedure set the values of variables not present
977 to 0. It should have been SYSMIS. This is now fixed.
979 * The REMARK command was too aggressive about skipping lines. It
980 didn't like being the last command in a file.
982 * Comment parsing wasn't consistent with the rest of the code in its
983 idea of where one command ends and another starts. This meant
984 that sometimes commands would be mysteriously ignored. Thanks to
985 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
987 * The TABLE subcommand on MATCH FILES worked only erratically at
988 best. This fixes it. Thanks to Dr. Dirk Melcher
989 <BZN-mdksh@t-online.de> for reporting this bug.
991 * VARIABLE LABELS rejected a slash before the first variable
992 specification, contradicting the documentation. Thanks to Walter
993 M. Gray <graywm@northernc.on.ca> for reporting this bug.
995 * Because of an incorrect optimization in memory allocation,
996 CROSSTABS sometimes segfaulted when asked to output multiple
997 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1000 * CROSSTABS didn't display value labels for column and row
1001 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1004 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1005 <BZN-mdksh@t-online.de> for reporting this bug.
1007 * The TABLE subcommand on MATCH FILES worked only erratically at
1008 best. This fixes it. Thanks to Dr. Dirk Melcher
1009 <BZN-mdksh@t-online.de> for reporting this bug.
1011 * VARIABLE LABELS rejected a slash before the first variable
1012 specification, contradicting the documentation. Thanks to Walter
1013 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1015 * Because of an incorrect optimization in memory allocation,
1016 CROSSTABS sometimes segfaulted when asked to output multiple
1017 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1020 * CROSSTABS didn't display value labels for column and row
1021 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1024 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1025 <BZN-mdksh@t-online.de> for reporting this bug.
1027 * MATCH FILES corrupted memory and dumped core on some syntax
1030 * MATCH FILES should set numeric values not available to the
1031 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
1032 <BZN-mdksh@t-online.de> for reporting this bug.
1034 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
1035 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
1039 * Some systems didn't like the way open_file was coded. Thanks to
1040 Hankin <hankin@rogue.consultco.com> for pointing this out.
1042 * The SAVE procedure didn't save long string variables properly.
1043 Fixed by this patch. Thanks to Hankin
1044 <hankin@rogue.consultco.com> for this patch.
1046 * Minor documentation fixes for MATCH FILES.
1048 Version 0.2.2 changes since 0.2.1:
1052 * Fix behavior of PRINT SPACE for negative arguments.
1054 * Fix reading some unusual system files.
1056 * Fix LIST problems with very long variables. Thanks to Hankin
1057 <hankin@dunno.com> for this bug report.
1059 * Fix problems with some string format specifiers.
1061 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
1062 <BZN-mdksh@t-online.de> for reporting this bug.
1064 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
1065 Hankin <hankin@dunno.com> again on this one.
1067 * Sometimes you may encounter a PSPP script that has to be
1068 interpreted in interactive mode. Now you can use the -i flag to
1071 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
1072 `unused variable' warnings under gcc 2.7.2.3, fixing this will
1077 * The files in gmp need the internationalization directory in
1078 their include path. Thanks to OKUJI Yoshinori
1079 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
1081 Version 0.2.1 changes since 0.2.0:
1085 * Remember to include examples/ directory in distribution :-)
1087 * Fixed gmp compile problems for some non-i386 architectures.
1088 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
1091 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
1092 matches the documented behavior exactly, and error messages are
1093 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
1095 Version 0.2.0 changes since 0.1.0:
1097 Procedures now implemented:
1098 * CROSSTABS. Please see documentation for caveats.
1100 Transformations and utilities now implemented:
1103 * CLEAR TRANSFORMATIONS
1104 * DISPLAY (all subcommands).
1115 Support for input and output through pipes: "|command" and
1116 "command|" filenames; support for special filenames "-", "stdin",
1119 New command-line features:
1120 * New option --testing-mode: Invoke heuristics to assist testing.
1121 * New option --safer, -s: Don't allow certain unsafe operations.
1122 * New option --command=CMD, -c CMD: Perform literal command CMD.
1123 * rc file ~/.pspp/rc is executed before any other files.
1124 * Now multiple syntax files can be specified.
1126 Operator LAG is now implemented.
1128 Added missing FILE subcommand to REREAD.
1130 Table output manager completely rewritten.
1132 Device configuration file syntax changed. You will need to
1133 reinstall your `devices' file.
1135 New output driver for HTML.
1137 PostScript driver and prologue simplified.
1139 Many bugs fixed. General source-code cleanup.
1141 Added Texinfo documentation for:
1142 * PSPP system file format
1143 * PSPP portable file format
1144 * How to write input for q2c parser generator
1147 PSPP language is now fully documented. Please report any
1148 inaccuracies or omissions in the documentation.
1150 Changes for version 0.1.0:
1152 First public release. For changes from unreleased development
1153 versions, please see ONEWS.
1155 ----------------------------------------------------------------------
1156 Copyright information:
1158 Permission is granted to anyone to make or distribute verbatim
1159 copies of this document as received, in any medium, provided that
1160 the copyright notice and this permission notice are preserved, thus
1161 giving the recipient permission to redistribute in turn.
1163 Permission is granted to distribute modified versions of this
1164 document, or of portions of it, under the above conditions,
1165 provided also that they carry prominent notices stating who last
1169 version-control: never