* MATCH FILES:: Merge system files.
* SAVE:: Write to a system file.
* SYSFILE INFO:: Display system file dictionary.
-* XSAVE:: Write to a system file, as a transform.
+* XEXPORT:: Write to a portable file, as a transformation.
+* XSAVE:: Write to a system file, as a transformation.
@end menu
-@node APPLY DICTIONARY, EXPORT, System and Portable Files, System and Portable Files
+@node APPLY DICTIONARY
@section APPLY DICTIONARY
@vindex APPLY DICTIONARY
active
file. The system file is not modified.
-@node EXPORT, GET, APPLY DICTIONARY, System and Portable Files
+@node EXPORT
@section EXPORT
@vindex EXPORT
@display
EXPORT
/OUTFILE='filename'
+ /UNSELECTED=@{RETAIN,DELETE@}
+ /DIGITS=n
/DROP=var_list
/KEEP=var_list
/RENAME=(src_names=target_names)@dots{}
+ /TYPE=@{COMM,TAPE@}
+ /MAP
@end display
The @cmd{EXPORT} procedure writes the active file dictionary and data to a
specified portable file.
+By default, cases excluded with FILTER are written to the portable
+file. These can be excluded by specifying DELETE on the UNSELECTED
+subcommand. Specifying RETAIN makes the default explicit.
+
+Portable files express real numbers in base 30. Integers are always
+expressed to the maximum precision needed to make them exact.
+Non-integers are, by default, expressed to the machine's maximum
+natural precision (approximately 15 decimal digits on many machines).
+If many numbers require this many digits, the portable file may
+significantly increase in size. As an alternative, the DIGITS
+subcommand may be used to specify the number of decimal digits of
+precision to write. DIGITS applies only to non-integers.
+
The OUTFILE subcommand, which is the only required subcommand, specifies
the portable file to be written as a file name string or a file handle
(@pxref{FILE HANDLE}).
DROP, KEEP, and RENAME follow the same format as the SAVE procedure
(@pxref{SAVE}).
+The TYPE subcommand specifies the character set for use in the
+portable file. Its value is currently not used.
+
+The MAP subcommand is currently ignored.
+
@cmd{EXPORT} is a procedure. It causes the active file to be read.
-@node GET, IMPORT, EXPORT, System and Portable Files
+@node GET
@section GET
@vindex GET
@cmd{GET} does not cause the data to be read, only the dictionary. The data
is read later, when a procedure is executed.
-@node IMPORT, MATCH FILES, GET, System and Portable Files
+@node IMPORT
@section IMPORT
@vindex IMPORT
@cmd{IMPORT} does not cause the data to be read, only the dictionary. The
data is read later, when a procedure is executed.
-@node MATCH FILES, SAVE, IMPORT, System and Portable Files
+@node MATCH FILES
@section MATCH FILES
@vindex MATCH FILES
@cmd{MATCH FILES} may not be specified following @cmd{TEMPORARY}
(@pxref{TEMPORARY}) if the active file is used as an input source.
-@node SAVE, SYSFILE INFO, MATCH FILES, System and Portable Files
+@node SAVE
@section SAVE
@vindex SAVE
@display
SAVE
/OUTFILE='filename'
+ /UNSELECTED=@{RETAIN,DELETE@}
/@{COMPRESSED,UNCOMPRESSED@}
+ /PERMISSIONS=@{WRITEABLE,READONLY@}
/DROP=var_list
/KEEP=var_list
/VERSION=version
/RENAME=(src_names=target_names)@dots{}
+ /NAMES
+ /MAP
@end display
The @cmd{SAVE} procedure causes the dictionary and data in the active
file to be written as a string file name or a file handle (@pxref{FILE
HANDLE}).
+By default, cases excluded with FILTER are written to the system file.
+These can be excluded by specifying DELETE on the UNSELECTED
+subcommand. Specifying RETAIN makes the default explicit.
+
The COMPRESS and UNCOMPRESS subcommand determine whether the saved
system file is compressed. By default, system files are compressed.
This default can be changed with the SET command (@pxref{SET}).
+The PERMISSIONS subcommand specifies permissions for the new system
+file. WRITEABLE, the default, creates the file with read and write
+permission. READONLY creates the file for read-only access.
+
By default, all the variables in the active file dictionary are written
to the system file. The DROP subcommand can be used to specify a list
of variables not to be written. In contrast, KEEP specifies variables
written to disk.
The VERSION subcommand specifies the version of the file format. Valid
-versions are '3' and '3x'. Version 3x system files are identical to
-version 3 files, except that variable names greater than 8 bytes will
-be truncated. The default version is 3. The VERSION subcommand is
-optional. There is no need ever to use it.
+versions are 2 and 3. The default version is 3. In version 2 system
+files, variable names longer than 8 bytes will be truncated. The two
+versions are otherwise identical.
+
+The NAMES and MAP subcommands are currently ignored.
@cmd{SAVE} causes the data to be read. It is a procedure.
-@node SYSFILE INFO, XSAVE, SAVE, System and Portable Files
+@node SYSFILE INFO
@section SYSFILE INFO
@vindex SYSFILE INFO
@cmd{SYSFILE INFO} does not affect the current active file.
-@node XSAVE, , SYSFILE INFO, System and Portable Files
+@node XEXPORT
+@section XEXPORT
+@vindex XEXPORT
+
+@display
+EXPORT
+ /OUTFILE='filename'
+ /DIGITS=n
+ /DROP=var_list
+ /KEEP=var_list
+ /RENAME=(src_names=target_names)@dots{}
+ /TYPE=@{COMM,TAPE@}
+ /MAP
+@end display
+
+The @cmd{EXPORT} transformation writes the active file dictionary and
+data to a specified portable file.
+
+This transformation is a PSPP extension.
+
+It is similar to the @cmd{EXPORT} procedure, with two differences:
+
+@itemize
+@item
+@cmd{XEXPORT} is a transformation, not a procedure. It is executed when
+the data is read by a procedure or procedure-like command.
+
+@item
+@cmd{XEXPORT} does not support the UNSELECTED subcommand.
+@end itemize
+
+@xref{EXPORT}, for more information.
+
+@node XSAVE, , XEXPORT, System and Portable Files
@section XSAVE
@vindex XSAVE
XSAVE
/OUTFILE='filename'
/@{COMPRESSED,UNCOMPRESSED@}
+ /PERMISSIONS=@{WRITEABLE,READONLY@}
/DROP=var_list
/KEEP=var_list
+ /VERSION=version
/RENAME=(src_names=target_names)@dots{}
+ /NAMES
+ /MAP
@end display
The @cmd{XSAVE} transformation writes the active file dictionary and
-data to a
-system file stored on disk.
+data to a system file stored on disk. It is similar to the @cmd{SAVE}
+procedure, with two differences:
+
+@itemize
+@item
+@cmd{XSAVE} is a transformation, not a procedure. It is executed when
+the data is read by a procedure or procedure-like command.
+
+@item
+@cmd{XSAVE} does not support the UNSELECTED subcommand.
+@end itemize
-@cmd{XSAVE} is a transformation, not a procedure. It is executed when the
-data is read by a procedure or procedure-like command. In all other
-respects, @cmd{XSAVE} is identical to @cmd{SAVE}. @xref{SAVE}, for
-more information on syntax and usage.
+@xref{SAVE}, for more information.
@setfilename ignored
projects / pspp / blobdiff