1 PSPP NEWS -- history of user-visible changes.
2 Copyright (C) 1996-2000, 2008-2016 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 0.10.1 to 0.10.2:
9 * CROSSTABS implements a new COUNT subcommand to round case or cell
12 * Help will be opened as HTML in default browser if yelp
15 * When plotting scatterplots with only one dataset (the simple case)
16 the colour used for the dataset is now black. The previous default
17 from the Tango palette was too faint to see easily.
19 * The varible info dialog could previously only paste a single variable.
20 Now it can paste multiple variables.
22 * Bug fixes, including the following:
24 - T-test with independent samples GUI crashed with string
25 type variable as group variable.
27 - The variable info dialog showed the previous selected variable
28 superimposed with the currently selected one.
30 - The GLM command did not properly deal with missing values. This
33 Changes from 0.10.0 to 0.10.1:
35 * Bug fixes, including the following:
37 - A bug where certain dialog boxes could not be properly populated
40 - Various commands have been hardened against errors when called
43 * Translation updates. Thanks to our translators!
45 Changes from 0.8.5 to 0.10.0:
47 * The QUICK CLUSTER command has a /PRINT subcommand which shows
48 the initial cluster centres and the final cluster membership of
49 each case. The clustering algorithm has also been updated, so
50 as to produce better separated clusters.
52 * A Russian localisation has been contributed.
54 * The GRAPH command now has a /BAR subcommand to draw barcharts.
56 * If the DECIMAL character is set to COMMA then the ',' character
57 will not be treated as a separator by DATA LIST.
59 * The graphical user interface (psppire) has been changed as follows:
61 - It now uses Gtk+ version 3 instead of version 2. Accordingly, it has a
62 somewhat different look and feel.
64 - There is now a Graphs menu to access the GRAPH command.
66 - The status of dialog box widgets are now preserved between calls
67 to the same dialog box for the same dataset.
69 - The dialog box for the Logistic Regression command will now
70 infer that string variables or any varible with a "measure"
71 of Nominal or Ordinal are to be treated as categorical variables
72 and will generate syntax accordingly.
74 * The pspp-convert utility can now decrypt encrypted syntax files.
75 The encrypted syntax file format is unacceptably insecure, so to
76 discourage its use PSPP and PSPPIRE do not directly read or write
83 * The following functions for transformation expressions are new:
85 - REPLACE, for search-and-replace of one string with another.
87 - STRUNC, to truncate a string and trim trailing spaces.
89 - MEDIAN, to compute the median of its arguments.
91 - The TRUNC function in expressions now supports additional arguments
92 for truncating to values other than integers and to indicate a level
93 of rounding fuzz. The default rounding fuzz may now be controlled
94 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
96 * Bug fixes, including the following notable ones:
98 - The correlation coefficient in the paired samples t-test
99 procedure is now correctly calculated when presented with
102 - The ESCAPE subcommand has been removed from GET DATA /TYPE=TXT.
103 For compatibility, the behavior that ESCAPE enabled is now the
104 default and only supported behavior.
106 - Rendering of the variable and data sheets in right-to-left locales
109 - The Mann-Whitney test, when run on a dataset containing values
110 of the group variable, other than those defining the test groups,
111 would incorrectly calculate the ranks. This has been corrected.
113 * The IMPORTCASES subcommand on GET DATA is now ignored, for
116 Changes from 0.8.4 to 0.8.5:
118 * The FREQUENCIES and CROSSTABS commands can now generate barcharts.
120 * The FACTOR command can now perform PROMAX rotations.
122 * SPSS/PC+ system files are now supported on GET and other commands
123 that read SPSS system files. The pspp-convert program can now read
124 SPSS/PC+ system files. Writing the obsolete SPSS/PC+ system file
125 format is not supported.
127 * SYSFILE INFO can now read SPSS/PC+ system files and SPSS portable
130 * FREQUENCIES: A bug was fixed where an assertion failure occured
131 when an empty dataset was presented.
133 * The GRAPH command is now available. Initially it supports
134 scatterplots and histograms.
136 * The RND operator in expressions now supports additional operands
137 for rounding to values other than integers and to indicate a level
138 of rounding fuzz. The default rounding fuzz may now be controlled
139 and displayed with SET FUZZBITS and SHOW FUZZBITS, respectively.
141 Changes from 0.8.3 to 0.8.4:
143 * Formatting of SYSFILE INFO output was made easier to read.
145 * Bug fixes, including the following notable ones:
147 - FREQUENCIES works properly for string variables. (This bug was
148 introduced in 0.8.2.)
150 - CROSSTABS now correctly computes all of the measures that it
151 offers. Some measures have been removed because they were not
154 - The NPAR TESTS calculation of significance for the RUNS
155 subcommand has been corrected.
157 - Planned comparisons in ONEWAY ANOVA now correctly handle negative
160 - The COUNT command now correctly treats missing values as
163 - Conformance fixes to Open Document output format.
165 Changes from 0.8.2 to 0.8.3:
167 * Independent T-Tests displayed the standard error of the difference
168 and the confidence interval for the unequal variances case, where
169 the equal variances case should have been. This has been fixed.
171 * REGRESSION now recognises /STATISTICS=CI(x) which causes confidence
172 intervals for the coefficients to be printed.
174 * When DESCRIPTIVES calculates Z scores, it now omits cases filtered
175 by the current FILTER settings.
177 * PSPPIRE graphical user interface improvements:
179 - Dialog boxes with source variable lists can now choose the sort
180 order; right click and select from the popup menu.
182 - File|Open now allows an encoding to be selected for opening
185 - File|Display Data File Information|External File... now allows an
186 encoding to be selected.
188 - A problem with the Means dialog has been resolved (bug #41433).
190 - Several problems related to the input of spreadsheets have been
191 fixed (bug #41657, #41620
193 * System file related improvements:
195 - With ENCODING="DETECT", SYSFILE INFO can now help the user to
196 pick an encoding for reading a system file that does not identify
199 - SYSFILE INFO now accepts an ENCODING subcommand to specify the
200 character encoding of string data in the system file.
202 - Variable labels over 255 bytes long are now accepted without
203 truncation (bug #41863).
205 - System files that contain duplicate variable names may now be
206 read successfully (bug #41475).
208 Changes from 0.8.1 to 0.8.2:
210 * Charts are now rendered with colours from the Tango palette instead
211 of fully saturated primaries.
213 * Support for new system file variants:
215 - PSPP can now read and write ZCOMPRESSED system files, which
216 compress data much more effectively than older "compressed"
217 files. (The older format is still supported.)
219 - PSPP can now decrypt encrypted system files, using the new
220 pspp-convert utility. The encrypted system file format is
221 unacceptably insecure, so to discourage its use PSPP and PSPPIRE
222 do not directly read or write this format.
224 * Missing values for long string variables are now read from and
225 written to system files in an SPSS-compatible fashion.
227 (Earlier versions of PSPP that supported missing values for long
228 string variables wrote them to system files in an SPSS-incompatible
229 way. To fix the problem, read the system file with this version of
230 PSPP and then save a new copy of it.)
232 * pspp-convert, a new standalone utility for converting SPSS system
233 and portable files to other formats, is now included. The initial
234 version supports comma-separated value files as output format.
235 pspp-convert can also decrypt encrypted system files.
239 - zlib is now a required dependency. (Previously it was optional.)
241 Changes from 0.8.0 to 0.8.1:
247 * Changes to existing commands:
249 - CROSSTABS: The requirement that one expected count must be less than five
250 before Fishers Exact Test will be reported has been removed.
252 * PSPPIRE graphical user interface improvements:
254 - A new set of icons has been contributed.
256 - Syntax windows now parse syntax in "auto" mode, which in practice
257 should mean that both "batch" and "interactive" syntax now works,
258 instead of just "interactive" syntax.
260 - The variable pane of data windows now include a Role column.
264 - System files written by IBM SPSS 21 are now read without warnings.
266 - System files written by "VOXCO INTERVIEWER 4.3" are now read
269 - PSPPIRE should now more gracefully handle syntax files that contain
272 Changes from 0.6.2 to 0.8.0:
278 - DATAFILE ATTRIBUTES
285 - LOGISTIC REGRESSION
289 - PRESERVE and RESTORE
293 - SAVE TRANSLATE to CSV and tab-delimited files
295 - VARIABLE ATTRIBUTES
297 * Changes to existing commands:
299 - AUTORECODE has a new GROUP subcommand.
301 - CROSSTABS has been re-implemented to fix numerous bugs.
303 - EXAMINE: /MISSING=LISTWISE is now the default.
305 - DO REPEAT command has been reimplemented. Now, when DO REPEAT
306 contains an INCLUDE or INSERT command, substitutions are not
307 applied to the included file.
309 - FILE HANDLE has a new ENDS subcommand to select CR or CRLF new-lines.
311 - HOST has been updated to use more modern syntax.
313 - Most commands that work with data files now support a new
316 - MISSING VALUES can now assign missing values to long string
319 - ONEWAY: the POSTHOC subcommand is now implemented.
321 - The following new subcommands to NPAR TESTS have been implemented:
322 COCHRAN, FRIEDMAN, JONCKHEERE-TERPSTRA, KENDALL, KRUSKAL-WALLIS, MANN-WHITNEY,
323 MCNEMAR, SIGN, WILCOXON, and RUNS
325 - SET and SHOW no longer have ENDCMD, NULLINE, PROMPT, CPROMPT, and
326 DPROMPT subcommands. The defaults are now fixed values.
328 - SHOW now has a JOURNAL subcommand, to show the location of the
331 - VALUE LABELS can now assign value labels to long string
334 * Other language changes:
336 - The new DATASET commands replace the "scratch file" PSPP
337 extension, which is no longer supported.
339 - Strings may now include arbitrary Unicode code points specified
340 in hexadecimal, using the syntax U'hhhh'. For example, Unicode
341 code point U+1D11E, the musical G clef character, may be
342 expressed as U'1D11E'.
344 See the "Tokens" section in the PSPP manual for more information.
346 - In previous versions of PSPP, in a string expressed in
347 hexadecimal with X'hh' syntax, the hexadecimal digits expressed
348 bytes in the locale encoding. In this version of PSPP, X'hh'
349 syntax always expresses bytes in UTF-8 encoding.
351 See the "Tokens" section in the PSPP manual for more information.
353 * PSPPIRE graphical user interface improvements:
355 - Added support for non-ASCII characters in strings, labels and
358 - A "Split Window" function is available, which makes it easier to
359 see different parts of a large data file.
361 - Data files can now be opened by specifing their name as the first
362 argument. This means that on a properly configured desktop, double
363 clicking on an icon will open the file.
365 - Foreign formats, such as Gnumeric, OpenDocument and CSV can be imported
366 via using an "intelligent" application assistant dialog.
370 - The new "cairo" output driver supports output in PostScript, PDF,
371 and SVG formats. Its functionality is a superset of that of the
372 "postscript" driver, which has been removed. You must have Cairo
373 and Pango installed to build the "cairo" driver.
375 - Charts are now produced with Cairo and Pango, instead of libplot.
376 Without them, the new graphing features will not work. If you do
377 not have Cairo and Pango installed, you must run `configure' with
380 - The plain text output driver now properly supports multibyte UTF-8
381 characters, including double-width characters and combining
384 - Output to OpenDocument format is now supported.
386 - The HTML output is much improved.
388 * The "pspp" program has a new option --batch (or -b) that selects
389 "batch" syntax mode. In previous versions of PSPP this syntax mode
390 was the default. Now a new "auto" syntax mode is the default. In
391 "auto" mode, PSPP interprets most syntax files correctly regardless
392 of their intended syntax mode.
394 See the "Syntax Variants" section in the PSPP manual for more
397 * The "pspp" program has a new option --syntax-encoding that
398 specifies the encoding for syntax files listed on the command line,
399 as well as the default encoding for syntax files included with
400 INCLUDE or INSERT. The default is to accept the system locale
401 encoding, UTF-8, UTF-16, or UTF-32, automatically detecting which
402 one the system file uses.
404 See the documentation for the INSERT command in the PSPP manual for
407 * Text data files that PRINT and WRITE creates now use the system
408 native line ends by default (CRLF on Windows, LF only elsewhere).
409 Use the new ENDS subcommand on FILE HANDLE to override the default.
411 * A new Perl module allows Perl programs to read and write PSPP
414 * A tutorial chapter has been added to the user manual.
416 Changes from 0.6.1 to 0.6.2:
420 - Dutch, thanks to Harry Thijssen.
422 - Brazilian Portuguese, thanks to Michel Boaventura.
424 Thanks for translations are also due to the coordinators at
425 translationproject.org.
427 * Statistical bug fixes:
429 - REGRESSION: Report correct standard error of the estimate (bug
432 - T-TEST: Report correct significance of paired sample T-test in
433 the common case (bug #26936) and corner cases. Thanks to Mike
434 Griffiths and Matej Cepl for reporting these bugs.
436 * Build fixes and changes:
438 - Fix build with GTK+ 2.17.4 and later.
440 - Make running "make" after running "configure" with different
441 settings reliably rebuild version.c.
443 - Cygwin and MinGW build fixes.
445 - Fixes for building with recent gnulib.
447 - The Makefile now honors two new variables, PSPP_LDFLAGS and
448 PSPPIRE_LDFLAGS, that affect linking of the PSPP and PSPPIRE
449 binaries, respectively. This makes building easier for some
452 - Fixes for "configure --enable-relocatable" (bug #25508).
454 * Data file bug fixes and changes:
456 - Fix reading text data files that contain a mix of white space
457 and commas. Now "a ,b" is treated as two fields containing "a"
458 and "b"; previously it was treated as three, with an empty field
461 - Fix writing corrupted .sav files on Windows.
463 - Fix writing variable labels longer than 252 bytes to save files.
464 Thanks to Robert Westlund for reporting this bug.
466 - Fix writing corrupted .por files (bug #26034).
468 - Fix reading .por files whose initial lines are not padded out
469 with spaces as expected.
471 - PSPP will no longer issue warnings about some .sav file records
472 or values that it does not understand. These warnings were
473 harmless, but needlessly alarmed some users.
475 - Fix crash reading empty string fields from PostgreSQL databases.
477 * Bug fixes that affect PSPP and PSPPIRE:
479 - Users may now control precision of output statistics. Instead
480 of hard coding the width and decimals of output numbers, respect
481 the default format in most instances. Counts are now normally
482 displayed with the format of the weight variable, if any.
484 - Fix crash when an INSERT command specifies the name of a file
485 that does not exist (bug #24569).
487 - Fix crash when CROSSTABS specifies a long-string variable (bugs
490 - Fix crash drawing pie charts with many segments.
492 - Fix crash when NUMERIC specifies an invalid format.
494 * PSPPIRE bug fixes and changes:
496 - On Windows, write the output file to the user's home directory
497 instead of the current directory, to better match user
500 - Some data editor fixes.
504 - Fix typo in BINOMIAL section of user manual (bug #25892).
506 Changes from 0.6.0 to 0.6.1:
508 * Statistical bug fixes:
510 - Report correct standardized regression coefficients in linear
511 regression output (bug #23567).
513 * Bug fixes that affect PSPP and PSPPIRE:
515 - Avoid crash with pie charts (bug #24014).
517 - Don't append % to count totals (bug #24003).
519 - Don't crash on bad input (bug #24031).
521 - Don't crash if "end data." is not left aligned (bug #24115).
523 - Change default workspace value to 64 MB, to avoid unnecessary
524 disk accesses on modern machines.
528 - Add ".sav" or ".por" suffix to filename when saving with Save_As
531 - Make it possible to reopen the output window on Windows (bug
534 - A POSIX regular expression library is now included and used
535 automatically if the host does not have one or has one that is
538 * Build fixes and changes:
540 - Work around bug in GSL that prevented build with recent GCC
541 versions without manually adding -fgnu89-inline to CFLAGS.
543 - Also warn about missing prerequisites as we encounter them (bug
546 - Distribute necessary files to allow users working from the
547 distributed tarball to configure with --enable-gui-tools.
549 - Append $(EXEEXT_FOR_BUILD) to output file name when building
550 q2c, fixing build problems on Windows.
552 - GSL 1.8 or later is now required.
554 - Build errors with --enable-relocatable were fixed.
556 * The German translations were removed, since native German speakers
557 found them too poor to be useful.
559 Changes from 0.4.0 to 0.6.0:
561 * The PSPP license is now version 3 or later of the GNU General
562 Public License. Previously, it was version 2 or later.
564 * PSPP now has a graphical interface, called PSPPIRE. This
565 interface allows you to enter data and variable definitions
566 interactively. Commands may be executed in syntax form, or by
567 using the interactive dialog boxes available from the dropdown
570 * A few sample syntax files are now included in the `examples'
573 * Numerous major and minor bugs have been fixed.
577 * The INSTALL file now reflects the details of how to install
578 PSPP. It is a tailored version of the generic installation
579 instructions, instead of a verbatim copy.
581 * iconv, which is ordinarily installed as part of a Unix-like
582 system, is now required. If you don't have it already, you can
583 install GNU libiconv (http://www.gnu.org/software/libiconv/).
585 * libxml2 and zlib are new optional dependencies. They are
586 required to use PSPP's support for reading Gnumeric files.
588 Statistical procedure changes:
590 * REGRESSION is a new procedure for fitting linear models to data
591 via least-squares estimation.
593 * NPAR TESTS is a new procedure for non-parametric tests. In this
594 release, it supports binomial and chi-square tests.
596 * RANK is a new procedure to rank variables. It supports numerous
599 * FREQUENCIES can now output histograms and pie charts. These
600 features were present in earlier releases, but not documented.
602 User interface changes:
604 * In many situations where PSPP once terminated with a fatal
605 error, PSPP now recovers and continues execution.
607 * PSPP is now able to start up and run even if it cannot find its
610 * Journaling of interactive commands to a disk file is now
611 implemented. By default, journaling is enabled, to a file named
612 `pspp.jnl' in the current directory. SET JOURNAL may be used to
615 * The use of `+' between syntax file names on the command line to
616 prevent the dictionary from being cleared between their
617 executions is no longer supported. All syntax files are now
618 executed as if `+' had been specified.
620 * The -d/--define and -u/--undef command line options are no
621 longer supported. Instead, use /usr/bin/env or shell primitives
622 to define or clear environment variables before invoking PSPP.
624 * If a syntax file named named `rc' is found in a configuration
625 directory (such as $HOME/.pspp), it is executed before any
626 syntax file specified on the command line. The -r or
627 --no-statrc command line option may be used to disable this
632 * Output configuration options have changed. Please refer to the
633 manual for a full description of the available options.
635 In consequence, you will need to reinstall your "devices" file.
636 "make install" will do this for you.
638 * Most error messages are now written to PSPP output files by
639 default. SET ERROR can be used to disable this behavior.
641 * When invoked interactively, PSPP now by default produces output
642 on the terminal, piping it through the "more" program.
643 Previously, by default output was written only to file
644 pspp.list. On most terminals, the page length used for output
645 automatically adapts to the terminal size, even if the terminal
650 - This driver now supports charts in output. Charts are written
651 as separate files that the main output file refers to. By
652 default, charts are written in PNG format to files named
653 pspp-1.png, pspp-2.png, and so on.
655 - Configurations are provided that use VT100 (and xterm)
656 line-drawing characters in tables. The option "-o list-vt100"
657 requests use of this device for output to pspp.list.
661 - The default paper size is now determined using the PAPERSIZE
662 environment variable, or the LC_PAPER locale category on
663 systems that support it. If these are not set, the default is
664 now A4, instead of US letter. To make US letter the default,
665 set PAPERSIZE to "letter" in your environment.
667 - Font metrics are now read from AFM files, instead of
668 Groff-format metrics files. PostScript fonts can now be
671 In consequence, you will need to install an AFM file for each
672 font used in PostScript output. "make install" will install
673 AFM files for the standard PostScript fonts, including the
674 ones that the PostScript driver uses by default.
676 - Standard paper sizes no longer need to be specified through a
677 configuration file. The "papersize" configuration file is no
678 longer needed, or supported.
680 - The PostScript prologue is no longer obtained from the
681 "ps-prologue" configuration file. This configuration file is
682 no longer needed, or supported.
686 - The HTML prologue is no longer obtained from the
687 "html-prologue" configuration file. This configuration file
688 is no longer needed, or supported.
690 Command language changes:
692 * The following commands are new:
694 - GET DATA, which currently supports reading Gnumeric files and
695 text data files. It will be extended later to read other
696 types of foreign data.
698 - CD, to change the current directory.
700 - INSERT, to execute a syntax file.
702 - DELETE VARIABLES, to remove variables from the active file
705 - ADD DOCUMENT, to add text to active file documents.
707 - CLOSE FILE HANDLE (a PSPP extension; see below).
709 - XEXPORT, a PSPP extension that is a transformation equivalent
712 * The following functions for transformation expressions are new:
714 - DATEDIFF, for computing the difference of two dates.
716 - DATESUM, for advancing a date by a specified duration.
718 - VALUELABEL, to obtain the value label for a value.
720 * PSPP now supports very long string variables (over 255 bytes
723 * MATCH FILES now supports the FIRST and LAST subcommands.
725 * Previous versions of PSPP prohibited using commands to both read and
726 write a single file at the same time. Now, PSPP allows this, and
727 the new version of the file atomically replaces the old version.
729 * The following commands are no longer available. They will be
730 re-implemented in a later release:
732 - CLEAR TRANSFORMATIONS
738 * The PROCESS IF command, which was deprecated, has been removed.
739 You may replace any usage of it by SELECT IF following
740 TEMPORARY, which has the same effect.
742 * The output format for variables created by VECTOR may now be
743 specified as part of the VECTOR syntax.
745 "Scratch files", a new PSPP extension:
747 A scratch file, like a system file, consists of a dictionary and
748 any number of cases. Small scratch files are stored in memory;
749 one that grows too large is written to disk. By default, any file
750 handle whose name begins with # is assumed to refer to a scratch
753 Scratch files can be used just about anywhere a system or portable
754 file can be used. Also, portable files are now allowed in most
755 places that system files were allowed in previous PSPP version.
757 A new CLOSE FILE HANDLE command allows the storage associated with
758 scratch files to be freed. It also allows file handles to be
759 reassigned to new files.
761 For more information on scratch files, refer to the "File Handles"
762 section in the PSPP manual. For specifics of what commands now
763 allow what kinds of files to be specified, refer to the
764 documentation on those particular commands.
768 * Binary formats and IBM/360 formats, including ASCII/EBCDIC
769 translation, are now supported. Use FILE HANDLE to specify the
770 format of these files.
772 * Little-endian, big-endian, and VAX-endian formats are now
773 supported for integer binary formats when reading and writing
774 data files. The new RIB and WIB subcommands on the SET command
775 control endianness of integer data. The default is the host's
778 * IEEE 754, VAX, and IBM hexadecimal formats are now supported for
779 floating point binary formats when reading and writing data
780 files. The new RRB and WRB subcommands on the SET command
781 control the floating point format. The default is the host's
782 native floating point format.
784 * DATA LIST now supports the SKIP subcommand, to skip records at
785 the beginning of a file. For compatibility, DATA LIST now
786 treats N format as F format for FREE and LIST format input.
788 * The SAVE and XSAVE commands now support the UNSELECTED,
789 PERMISSIONS, NAMES, and MAP subcommands.
791 * The EXPORT command has been re-implemented to obtain better
792 results. Support for the UNSELECTED, DIGITS, and TYPE
793 subcommands has been added.
795 * For compatibility, PRINT now inserts a space at the beginning of
796 every output line, even lines that would otherwise be blank,
797 when OUTFILE is specified. (The behavior of WRITE is
800 * For compatibility, PRINT EJECT now inserts the digit `1' at the
801 beginning of each line that should begin a new page.
803 * For compatibility, WRITE now outputs the system-missing value as
804 a field filled with spaces. Binary formats are an exception.
805 (The behavior of PRINT is unchanged.)
809 * Input and output format descriptions have been rewritten. They
810 now precisely describe what is accepted on input and written on
813 * The descriptions of the PSPP system and portable file formats
814 have been extensively revised and improved.
816 For developers, the build system now requires Autoconf 2.60 and
819 Changes from 0.3.0 to 0.4.0:
821 Changes in build dependencies:
823 * The GNU Scientific Library (libgsl), version 1.6 or later, is
826 * libplot from GNU plotutils is optional. Without it, the new
827 graphing features will not work. If you do not have it
828 installed, you must run `configure' with --without-libplot.
830 * libgmp2 is no longer a dependency.
832 Newly implemented commands and statistical features:
834 * EXAMINE, including its graphing features.
836 * FREQUENCIES now supports percentiles.
844 * SORT CASES now sorts stably, that is, two cases with equal sort
845 criteria will be in the same relative order before and after the
848 * T-TEST (re-written).
850 * DATE and USE. These commands are parsed but otherwise ignored,
851 to enhance compatibility with certain command files that invoke
854 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
855 currently have no effect on PSPP output, but their values are
856 written to and read from system files and thus may affect
857 third-party software.
859 * SET EPOCH implemented.
861 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
864 * FILE HANDLE now supports custom tab widths.
866 Long variable names (and other identifiers) are now supported. Up
867 to the first 64 bytes of each identifier is significant. PSPP now
868 reads and writes system files compatible with SPSS version 12.
870 New --algorithm and --syntax command line options allow
871 SPSS-compatible or enhanced modes to be selected.
873 Support for transformation expressions has been rewritten and
874 significantly improved. Refer to the manual for details.
876 Calculation of moments (mean, standard deviation, kurtosis,
877 skewness) has been rewritten and should now be more accurate. In
878 --algorithm=enhanced mode moments may be more accurate than SPSS in
881 Numerous bugs have been fixed, too many to mention here. Many new
882 tests have been added, leading to the discovery and fixing of many
885 The ASCII output driver can now squeeze multiple blank lines into
888 Much of the code has been rewritten and refactored. It is now much
891 The FILE TYPE and REPEATING DATA commands have been disabled for
892 this release because their implementations were deemed too buggy to
893 be useful. They will be fixed and replaced in a future release.
895 New pspp-mode for Emacs (in pspp-mode.el).
897 Added rudimentary command-line completion for interactive input.
899 lib/julcal and lib/dcdflib are no longer used, so they have been
902 For developers, the build system now requires Autoconf 2.58 and
903 Automake 1.7. The included gettext has been updated to version
906 Some reports state that Texinfo 4.8, the latest version, may be
907 necessary to successfully format the documentation on some systems.
909 Version 0.3.0 changes since 0.2.3:
913 * Using alphanumeric variables in functions under AGGREGATE
916 * Under certain circumstances, the final case would be omitted
917 from the results of an AGGREGATE operation. Fixed.
919 * Undefined behavior was invoked by referencing a freed pointer
920 under certain circumstances. Fixed.
922 * A wrong record size was displayed when paging the active file to
925 * Not having enough temporary space for sorting caused a core
928 * Syntax errors in function descriptions on AGGREGATE caused core
931 * A null pointer was dereferenced, causing a core dump, when
932 PERCENTILES was specified on FREQUENCIES. This fixes the
933 problem, but PSPP still doesn't calculate percentiles.
935 * SORT always sorted in ascending order. Fixed.
937 * Some minor memory leaks in the expression parser were removed.
939 * Many assertions fixed for strict ANSI C compliance.
943 * SET ECHO ON now implemented, but turned off by default.
945 * PRINT specifier supported on END REPEAT.
949 * System libgmp2 library is used if installed instead of
950 unconditionally using the included libgmp2 subset.
952 * Extensive code cleanup, which continues.
954 * Added CORRELATIONS command parser, but not implemented.
956 Version 0.2.3 changes since 0.2.2:
960 * SPLIT FILE with a string variable caused a core dump. Fixed.
962 * Nested INCLUDEs didn't work. Fixed.
964 * The MATCH FILES procedure set the values of variables not present
965 to 0. It should have been SYSMIS. This is now fixed.
967 * The REMARK command was too aggressive about skipping lines. It
968 didn't like being the last command in a file.
970 * Comment parsing wasn't consistent with the rest of the code in its
971 idea of where one command ends and another starts. This meant
972 that sometimes commands would be mysteriously ignored. Thanks to
973 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
975 * The TABLE subcommand on MATCH FILES worked only erratically at
976 best. This fixes it. Thanks to Dr. Dirk Melcher
977 <BZN-mdksh@t-online.de> for reporting this bug.
979 * VARIABLE LABELS rejected a slash before the first variable
980 specification, contradicting the documentation. Thanks to Walter
981 M. Gray <graywm@northernc.on.ca> for reporting this bug.
983 * Because of an incorrect optimization in memory allocation,
984 CROSSTABS sometimes segfaulted when asked to output multiple
985 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
988 * CROSSTABS didn't display value labels for column and row
989 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
992 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
993 <BZN-mdksh@t-online.de> for reporting this bug.
995 * The TABLE subcommand on MATCH FILES worked only erratically at
996 best. This fixes it. Thanks to Dr. Dirk Melcher
997 <BZN-mdksh@t-online.de> for reporting this bug.
999 * VARIABLE LABELS rejected a slash before the first variable
1000 specification, contradicting the documentation. Thanks to Walter
1001 M. Gray <graywm@northernc.on.ca> for reporting this bug.
1003 * Because of an incorrect optimization in memory allocation,
1004 CROSSTABS sometimes segfaulted when asked to output multiple
1005 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1008 * CROSSTABS didn't display value labels for column and row
1009 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
1012 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
1013 <BZN-mdksh@t-online.de> for reporting this bug.
1015 * MATCH FILES corrupted memory and dumped core on some syntax
1018 * MATCH FILES should set numeric values not available to the
1019 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
1020 <BZN-mdksh@t-online.de> for reporting this bug.
1022 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
1023 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
1027 * Some systems didn't like the way open_file was coded. Thanks to
1028 Hankin <hankin@rogue.consultco.com> for pointing this out.
1030 * The SAVE procedure didn't save long string variables properly.
1031 Fixed by this patch. Thanks to Hankin
1032 <hankin@rogue.consultco.com> for this patch.
1034 * Minor documentation fixes for MATCH FILES.
1036 Version 0.2.2 changes since 0.2.1:
1040 * Fix behavior of PRINT SPACE for negative arguments.
1042 * Fix reading some unusual system files.
1044 * Fix LIST problems with very long variables. Thanks to Hankin
1045 <hankin@dunno.com> for this bug report.
1047 * Fix problems with some string format specifiers.
1049 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
1050 <BZN-mdksh@t-online.de> for reporting this bug.
1052 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
1053 Hankin <hankin@dunno.com> again on this one.
1055 * Sometimes you may encounter a PSPP script that has to be
1056 interpreted in interactive mode. Now you can use the -i flag to
1059 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
1060 `unused variable' warnings under gcc 2.7.2.3, fixing this will
1065 * The files in gmp need the internationalization directory in
1066 their include path. Thanks to OKUJI Yoshinori
1067 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
1069 Version 0.2.1 changes since 0.2.0:
1073 * Remember to include examples/ directory in distribution :-)
1075 * Fixed gmp compile problems for some non-i386 architectures.
1076 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
1079 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
1080 matches the documented behavior exactly, and error messages are
1081 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
1083 Version 0.2.0 changes since 0.1.0:
1085 Procedures now implemented:
1086 * CROSSTABS. Please see documentation for caveats.
1088 Transformations and utilities now implemented:
1091 * CLEAR TRANSFORMATIONS
1092 * DISPLAY (all subcommands).
1103 Support for input and output through pipes: "|command" and
1104 "command|" filenames; support for special filenames "-", "stdin",
1107 New command-line features:
1108 * New option --testing-mode: Invoke heuristics to assist testing.
1109 * New option --safer, -s: Don't allow certain unsafe operations.
1110 * New option --command=CMD, -c CMD: Perform literal command CMD.
1111 * rc file ~/.pspp/rc is executed before any other files.
1112 * Now multiple syntax files can be specified.
1114 Operator LAG is now implemented.
1116 Added missing FILE subcommand to REREAD.
1118 Table output manager completely rewritten.
1120 Device configuration file syntax changed. You will need to
1121 reinstall your `devices' file.
1123 New output driver for HTML.
1125 PostScript driver and prologue simplified.
1127 Many bugs fixed. General source-code cleanup.
1129 Added Texinfo documentation for:
1130 * PSPP system file format
1131 * PSPP portable file format
1132 * How to write input for q2c parser generator
1135 PSPP language is now fully documented. Please report any
1136 inaccuracies or omissions in the documentation.
1138 Changes for version 0.1.0:
1140 First public release. For changes from unreleased development
1141 versions, please see ONEWS.
1143 ----------------------------------------------------------------------
1144 Copyright information:
1146 Permission is granted to anyone to make or distribute verbatim
1147 copies of this document as received, in any medium, provided that
1148 the copyright notice and this permission notice are preserved, thus
1149 giving the recipient permission to redistribute in turn.
1151 Permission is granted to distribute modified versions of this
1152 document, or of portions of it, under the above conditions,
1153 provided also that they carry prominent notices stating who last
1157 version-control: never