install

智能画图软件

   If you wish to compile with gcc -ansi (CC='gcc -ansi -pedantic'
  ./configure), additional platform specific defines may be necessary
  to include non-ANSI function prototypes. E.g. on Solaris,
  -D__EXTENSIONS__ is needed. Otherwise, non-declared functions not
  returning int will be assumed to return int, with possibly
  dangerous consequences. Especially scpecfun.c is vulnerable here.

 - HP-UX 9.x
   It is recommended to use gcc, although the native compiler cc may
  work with warnings.

 - HP-UX 10.x and above
   GCC has known problems on this platform if configured to use HP's
  assembler. The telltale symptom are tic labels all ending up at
  position 0.0. So either make sure you use a GCC configured to use
  GNU as, or use HP's ANSI cc (the unbundled one).

 - Alpha CPUs
   The Alpha family of CPUs exhibits somewhat unusual behaviour in the
  case of floating point exceptions.  In default mode, it doesn't comply
  to IEEE floating point standards very well, leading to crashes of the
  whole program because of a floating point exception in certain cases.
  In order to avoid these, you may want to turn on IEEE compatibility
  mode in your compiler flags. For DEC cc, the relevant option is
  `-ieee', for GCC, it's `-mieee'.

 - IRIX 6.x
   If you want to use the png terminal, you must install your own
  versions of libpng and zlib. The versions supplied with the OS
  are too old. Note that you need be very careful to select the
  correct compiler options/ABI's.

 - SunOS 4.x
   An ANSI/ISO C compiler should be used to compile gnuplot. It is
  recommended to install gcc. If this is not an option, the system
  compiler cc can be made to work with Wietse Venema's unproto tool.
  See entry below for instructions.

  As of 1998-11-18, gnuplot compiles again with the native compiler cc.

 - System V.2/Ultrix 4.x/M88 SysV.3
   An ANSI/ISO C compiler should be used to compile gnuplot. It is
  recommended to install gcc. If this is not an option, the system
  compiler cc can be made to work with Wietse Venema's unproto tool.

  Note that as of gnuplot-4.0, the alternative tool ansi2knr is
  included with the gnuplot source distribution and should
  automatically be used by automake to do this job for you, so you
  shouldn't need unproto any longer.

  unproto is available from
  ftp://ftp.win.tue.nl/pub/unix/unproto5.shar.Z
  ftp://ftp.porcupine.org/pub/lang/unproto5.shar.Z

  After installing unproto, configure gnuplot with

  (Bourne shell syntax)

  $ cd gnuplot-4.0
  $ CC='cc -B/full/path/to/unproto/dir/ -tp' ./configure <options>

  or (C shell syntax)

  $ cd gnuplot-4.0
  $ env CC='cc -B/full/path/to/unproto/dir/ -tp' ./configure <options>

  The required compiler options shown here are for System V.2.  For other
  platforms, consult the unproto documentation. `/full/path/to/unproto/dir'
  is the full path name of the directory where unproto is installed. It is
  not necessary to "install" unproto, one can just create a subdirectory
  in gnuplot's source directory and use it from there.

Environment variables
=====================

See 'help environment'.

If the environment variable GNUTERM is found, it is used as the
terminal type.  Otherwise, in some cases the variable TERM will be
used, or the hardware may be detected automatically.  If all else
fails, a compile-time default will be used.

The PC version looks for the environment variable GNUPLOT to contain
the name of the directory from which to load the initialization file
GNUPLOT.INI and also to be used as the home directory in ~
substitution.  See the help on 'start_up' for more information.

HOME is examined as a directory where a .gnuplot startup file might be
found. See help on "start-up". The Atari/MTOS version uses
GNUPLOTPATH.

If defined, the environment variable GNUHELP is used for the name of
the .gih help file, otherwise HELPFILE (defined in makefile or
command.c) is used.

The VMS version looks for the logical name GNUPLOT$HELP to locate the
help library.

The usual system-wide environment variable is used to locate a command
line shell to be used for executing commands and starting sub-shells.
On the DOS family of platforms (including all versions of Windows and
OS/2) the variable looked at is COMSPEC.  Other platforms will consult
SHELL.

If gnuplot is configured to use its own, private history file, the
size of this file can be set via GNUPLOT_HISTORY_SIZE. The default is
666 (lines).

If gnuplot is configured for the X11 window system, it looks for the
X11 driver program in GNUPLOT_DRIVER_DIR.  The default position used
for the driver is fixed by the build process, so you should only have
to set this if you moved gnuplot_x11 away from its original location.

GDFONTPATH is the directory where png terminal searches TrueType and
Adobe Type 1 fonts.  You should set it to directory where files like 
arial.ttf and Symbol.pfa exist.

GNUPLOT_DEFAULT_GDFONT is the default font to be used by the png and
jpeg terminal types. This must either be a full path to the font file
or the face name of a font found in the GDFONTPATH search path.
    
GNUPLOT_FONTPATH is used by the postscript driver as search path for
postscript (Adobe Type 1 and Type 2) fonts.  It is also used by the
svg driver to look for svg or Adobe cef fonts.

GNUPLOT_LIB may be used to define additional search directories for
data and command files. The variable may contain a single directory
name, or a list of directories separated by a platform-specific path
separator, eg. ':' on Unix, or ';' on DOS/Windows/OS/2/Amiga
platforms. The contents of GNUPLOT_LIB are appended to the `loadpath`
variable, but not saved with the `save` and `save set` commands.

GNUFITLOG holds the name of a file that saves fit results. The default
is fit.log. If the name ends with a "/" or "\", it is treated as a
directory name, and "fit.log" will be created as a file in that
directory.

The CGI drivers need the CGIPATH environment variable to set the path
to the CGI agents, and the CGIDISP and/or CGIPRNT environment variables
to the CGI agents, and the CGIDISP and/or CGIPRNT environment variables
to set the output devices.

If creating dynamically linked executables, it may be necessary to add
flags to the LIBS variable in Makefile to make sure gnuplot finds all
required libraries at runtime.  Systems like SunOS and Solaris use -R
to specify the runtime library search path, whereas OSF/Dec Unix, Irix
and Linux use -rpath. If this is not possible, the LD_LIBRARY_PATH
environment variable should be set.  Generally it's recommended to
install shared libraries only in places that are already searched by
the linker without such options.  LD_LIBRARY_PATH is the second-best
choice.


How to test gnuplot
===================

No comprehensive test suite for gnuplot's features has been written to date.
However, the supplied demo files provide a good method of testing commonly
used features. All command line examples below assume Unix Bourne shell
syntax.

   The demo files can be run interactively by eg.

$ cd gnuplot/demo
$ gnuplot simple.dem
    or
$ GNUPLOT_DRIVER_DIR=../src ../src/gnuplot simple.dem

and gnuplot prompts the user to "Hit return to continue" to cycle through
all the plots (the GNUPLOT_DRIVER_DIR= part is only required if you are
using the X11 or BeOS plotting device and the gnuplot_x11/gnuplot_be binary
has not been installed yet, or if you want to test the external binaries you
just compiled at the same time).

   To run the demos in a specified file without interaction, one can use

$ gnuplot simple.dem </dev/null
$ GNUPLOT_DRIVER_DIR=../src ../src/gnuplot simple.dem </dev/null

   To run all demos non-interactively, use

$ gnuplot all.dem </dev/null
$ GNUPLOT_DRIVER_DIR=../src ../src/gnuplot all.dem </dev/null
   For convencience, the special make target 'check' will run the above
   if you run it from the demo directory of the source tree:
$ make check

   To use a different plotting device than the default (usually X11 under
Unix), use eg.

$ GNUTERM=dumb GNUPLOT_DRIVER_DIR=../src ../src/gnuplot all.dem </dev/null
or
gnuplot> set term dumb
gnuplot> load 'all.dem'

   To test the capabilities of the terminal you are using, there is the
'test' command:

$ gnuplot

        G N U P L O T
        Unix version 4.0
        patchlevel 0
        last modified Tue Apr 13 13:13:13 GMT 2004

        Copyright(C) 1986 - 1993, 1998, 2004
        Thomas Williams, Colin Kelley and many others

        Send comments and requests for help to [e-mail]
        Send bugs, suggestions and mods to [e-mail]

Terminal type set to 'x11'
gnuplot> test

   `test` creates a display of line and point styles and other useful things
appropriate for the terminal you are using.


Installing WPS object for gnuplot on OS/2
=========================================

GNUPLOT can be run from the command line of an OS/2 session, or can be set up
as a program object in the WPS.

GNUPLOT starts up as a command line session which accepts the usual GNUPLOT 
input. The Presentation Manager (PM) window for graphics display is only opened
when the first 'plot' or 'splot' command is entered.

If GNUPLOT is set up as a program object, it can be configured for 'drag and 
drop' in the usual way, by specifying '%*' as the program parameter.

The PM window has facilities for printing the plot, for changing the fonts 
used in the plot, and so on. These of course are handled through the usual 
PM interface. In addition, you can 'drop' a font onto the window to change 
the font.

The usual GNUPLOT commands can also be used to produce output on supported
devices.

Settings and the positions and sizes of the windows can be saved in the file
gnushell.ini. This file is saved in the program's working directory; several
different directories can be set up (as program objects) with different 
options, if you wish.

PM terminal is fully mouse-capable. Type 'm' to switch the mouse on/off (see
'help mouse' for more details), or 'h' for the full list of current hotkeys
(see also 'help bind').


Front-ends for gnuplot
======================

 o See gnuplot web page
	http://gnuplot.sourceforge.net/links.html
   for an up-to-date version of gnuplot front-ends

 o Bruce Ravel <[e-mail]> has written a new version of
   gnuplot-mode for GNU emacs and XEmacs. This version is based on
   the gnuplot.el file by Gershon Elber which used to be included with 
   earlier versions of gnuplot's source distribution. The package is
   available from http://feff.phys.washington.edu/~ravel/gnuplot/.
   As of gnuplot 4.0 Bruce's version of gnuplot-mode is included 
   with the gnuplot distribution, so you should already have it.