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[ANNOUNCEMENT] Updated: gnuplot-4.0.0-1


A new version of 'gnuplot' has been uploaded to a server near you.

Gnuplot is a command-line driven interactive function plotting utility
for UNIX, MSDOS, VMS, and many other platforms.  The software is copyrighted
but freely distributed (i.e., you don't have to pay for it).  It was
originally intended as graphical program which would allow scientists
and students to visualize mathematical functions and data.  Gnuplot
supports many different types of terminals, plotters, and printers
(including many color devices, and pseudo-devices like LaTeX) and is
easily extensible to include new devices.  [ The 'GNU' in gnuplot is
NOT related to the Free Software Foundation, the naming is just a
coincidence (and a long story; see the gnuplot FAQ for details). Thus
gnuplot is not covered by the Gnu copyleft, but rather by its own
copyright statement, included in all source code files.]

Gnuplot handles both curves (2 dimensions) and surfaces (3
dimensions). Surfaces can be plotted as a mesh fitting the specified
function, floating in the 3-d coordinate space, or as a contour plot
on the x-y plane. For 2-d plots, there are also many plot styles,
including lines, points, lines with points, error bars, and impulses
(crude bar graphs). Graphs may be labeled with arbitrary labels and
arrows, axes labels, a title, date and time, and a key.  The interface
includes command-line editing and history on most platforms.


* Update to latest upstream release

gnuplot NEWS:

Below you find list of news, changes and fixes in gnuplot version 4.0
and older.

Please see also section "What is New in Version 4.0" in gnuplot documentation
(files gnuplot.gih, gnuplot.hlp, gnuplot.inf, etc.) available by the command
    gnuplot> help new
from gnuplot 4.0. You may find it also in files gnuplot.pdf, gnuplot.html
or optionally available in your distribution, or online at

Mouse and hotkey support in screen terminals

  The pm, x11, ggi and windows terminals support interactive work with mouse
  and hotkeys. The usage of the mouse is mainly self-explanatory. Just type 'h'
  in the graph window (hereafter we mean either PM, X11, ... terminal window)
  and a short overview of commands will pop up. The mouse is turned on and off
  with the hotkey 'm'. See 'help mouse' and 'help bind' for more details.

  The coordinates of mouse clicks are exported to variables MOUSE_X, MOUSE_Y,
  MOUSE_X2, MOUSE_Y2, and MOUSE_BUTTON accessible from the gnuplot command
  line. This allows gnuplot scripts to alter their behaviour based on
  interactive mouse input. See 'help mouse variables' and 'help pause mouse',
  and the example script demo/mousevariables.dem. Further it allows interaction
  of a gnuplot mouseable terminal and external programs in C, Python, Octave,
  etc. using gnuplot as their graph engine. This is demonstrated on gnuplot web
  page in section "Programming interfaces - bidirectional interaction".

Brief list of news in gnuplot 4.0:

* CHANGE sample calculated "smooth csplines" only in actual xrange
* CHANGE 'set term gif' compile-time option to write PNG format instead
* CHANGE pattern fill styles are uniform across all supporting terminals
* CHANGE X-window plot and font size is used to adjust plot layout
* CHANGE 'set key {on|off|default}' is preferred method for controlling key
* CHANGE mouse position is tracked in all X windows (not just current one)
* NEW enhanced text mode for additional terminal types
* NEW built-in function 'defined(<variablename>)'
* NEW mouse input information is exported to user-accessible variables
* NEW 'set term png' and 'set term jpeg' using modern GD library
* NEW set size ratio now works for splots, too
* NEW grid options: {layerdefault | front | back}
* NEW plot option "smooth frequency"
* NEW terminal names now sorted alphabetically
* NEW "with palette" also for points
* NEW plotstyle "with filledcurves"
* NEW 'set style fill' applies to boxes, boxxyerror, boxerror, candlesticks
* NEW "set boxwidth <number> relative"
* NEW options to FIG terminal driver
* NEW parse errors in datafile reading now show the culprit
* NEW labels can be printed attached to a point
* FIXED interaction of "set xtics <incr>"  with time/date axes
* FIXED candlesticks now ignore order of high/low entries
* FIXED keeping old arrow options if new "set" command modifies it
* FIXED undoing a mouse zoom that started from autoscaled axis
* FIXED contour line colours in pm3d's "with palette" mode
* FIXED PostScript stack pollution caused by "Symbol Oblique" patch
* FIXED warnings from perl -w in tkcanvas terminal output
* FIXED dgrid3d floating point exception
* FIXED logscaled colorbox axis
* FIXED pgnuplot for Windows NT/2K/XP

Time-organized list of news until gnuplot 4.0:

* NEW let gnuplot on windows support -persist option
* NEW encoding koi8-r
* NEW 'set term x11 title "title"' and 'set term x11 close'
* NEW 'test palette'
* NEW 'set palette palette <n>' options {float|int} and output to that of
  'set print'
* NEW enhanced text mode for x11 gd pdf and dumb terminals
* UPDATED aquaterm terminal driver (Mac OS X). Requires AquaTerm 1.0 or later.

To update your installation, click on the "Install Cygwin now" link on
the web page.  This downloads setup.exe to your
system.  Save it and run setup, answer the questions and pick up
the above mentioned package from the 'Graphics' category.

Note that downloads from (aka aren't
allowed due to bandwidth limitations.  This means that you will need
to find a mirror which has this update, please choose the one nearest to

If you want to make a point or ask a question the Cygwin mailing
list is the appropriate place.

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