--- /dev/null
+ To install from sources:
+ ========================
+
+ Installation instructions are found in the file INSTALL in this
+ directory after going through this file. In a very small nutshell:
+
+ - Under Unix, use configure and make
+
+ - Under DOS, if you are using bash and DJGPP,
+ you can just run config/djconfig.sh
+
+ - Other platforms, copy the relevant makefile from config/
+ to src, cd to src and make. See config/README for what
+ each of those files is for. Note: some of those files
+ haven't been updated in ages, so they may no longer be
+ usable.
+
+
+ An important about the PDFlib Lite library:
+ ===========================================
+
+ The 'pdf' terminal driver uses an external library provided by
+ PDFlib GmbH, Germany ( http://www.pdflib.de/ ). This library
+ is available under two strictly separate licencing models.
+ Depending on the environment you use gnuplot in, you may have to
+ purchase a commercial licence for PDFlib even though gnuplot itself
+ is free software.
+
+ There's a special version of PDFlib, called ``PDFlib Lite'', which
+ is freely redistrutable, but programs linked to that are strictly for
+ non-commercial usage only. *You* are liable for whatever violations
+ of this licence occur in a gnuplot binary built by you.
+
+
+ IMPORTANT NOTE ON GIF, PNG and JPEG SUPPORT
+ ===========================================
+
+ The gd library from http://www.boutell.com/gd/ is used to generate
+ GIF, PNG and JPEG outputs.
+
+ Old versions of the Boutell gd library (versions 1.2 to 1.4) produced only
+ GIF output. This means you cannot obtain a PNG or a JPEG output from
+ gnuplot 4.2 with these versions. (Note that gnuplot's old minimalistic but
+ standalone PNG driver driver has now been removed).
+
+ Versions of the the Boutell gd library between 1.6 and 2.0.27 do not
+ support GIF output because of patent concerns (see Note 1 below). This
+ means that with these versions, you cannot generate a GIF output directly
+ from gnuplot. However versions 1.6 and newer support PNG outputs, and 1.7
+ and newer support JPEG outputs. Versions 1.6.2 and newer also support
+ TrueType fonts.
+
+ Version 2.0.28 of the Boutell gd library restored GIF functionality.
+ Version 2.0.29 added support for GIF animation. We recommend using
+ version 2.0.29 or newer for use with gnuplot.
+
+ Note 1 - UNISYS patent (why no more GIF images)
+ -----------------------------------------------
+ The UNISYS patent covers the LZW technology which is used to create
+ gifs. To my knowledge, only gd library version 1.3, and possibly
+ version 1.4 are free of LZW code and should therefore be used with
+ gnuplot. Versions 1.2 and 1.5 should not be used unless you have a
+ license from Unisys to use LZW code or are in a country where the
+ UNISYS patent does not apply.
+
+ Note 2 - Open source programs for PNG to GIF conversion
+ -------------------------------------------------------
+
+ ImageMagick ( www.ImageMagick.org )
+ This is an open source package for general image manipulation and file
+ conversion, supported on a wide variety of platforms. For example the
+ command "convert file.png file.gif" will convert a PNG image file to an
+ equivalent GIF image file.
+ On platforms that allow pipes in the "set output" command, you can
+ generate and convert the images at the same time from gnuplot, as in this
+ example:
+
+ set terminal png font "arial,12" size 500,300
+ set output '| convert png:- image.tiff'
+
+ Utah Raster Toolkit ( http://www.cs.utah.edu/gdc/projects/urt/ )
+ A general image file conversion library and associated file conversion
+ utilities. Distributed as C source code.
+ To convert from PNG to GIF, use the commands
+ pngtorle -o temp.rle image.png
+ rletogif -o image.gif temp.rle
+
projects / gnuplot / blobdiff