GLE is a hi quality graphics package for scientists.  GLE
combines a user friendly interface with a full range of
facilities for producing publication quality graphs, diagrams,
posters and slides.  GLE runs on PC's, VAXes and Unix.

It provides LATEX quality fonts together with a flexible 
graphics module which allows the user to specify any feature 
of a graph (down to the line width of the subticks for example)

Complex pictures can be drawn with user defined subroutines and 
simple looping structures.

The SURFACE utility allows hidden line surface plotting.

The CONTOUR utility allows contour plots. 

The MANIP utility allows columns of data to be manipulated.

The FITLS utility allows arbitrary equations to be fitted to 
data.

Current device drivers support XWindows, REGIS, TEK4010, all PC 
graphics cards, VT100's, HP-Plotters, PostScript Printers, EPSON 
Printers and LaserJet/Paintjet Printers.

GLE runs on VAX-VMS, UNIX and PC's, giving a near identical user interface
on all platforms.

For information on ftp sites for VMS or UNIX versions of GLE, or any
other questions send a mail message to:
			srghcxp@grv.dsir.govt.nz

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In order to install GLE on a UNIX system ftp the following files:

Be sure to use binary transfer for tar_z files.

	$ ftp wuarchive.wustl.edu 128.252.135.4
	FTP> user anonymous
	Password: (your Email address)
	FTP> cd /graphics/graphics    (probable directory, check index)
	FTP> ascii
	FTP> get gle33b.txt		(this file)
	FTP> binary
	FTP> get gle33b.tar.Z
	FTP> get gle33b.ps.Z   (Optional PostScript copy of manual)
	FTP> quit
	
.............................................................................
GLE will compile under GCC or XLC (on AIX R6000's) 

It is suggested that you build GLE in a temporary directory of it's own
and then use the install.com script to copy the 'required' parts
of gle into the system areas, you can then delete the gle source directory
tree.

Then uncompress and un-Tar the installation kit.
	uncompress gle33b.tar.Z
	tar -xvf gle33b.tar
	cd gle

GLE needs to know where it is being built as it runs itself during
the installation.  Define GLE_TOP:

	pwd		(Print working directory)
/home/mydir/gle

(sh)	export GLE_TOP="/home/mydir/gle/"	(use your own directory)
(csh)	setenv GLE_TOP "/home/mydir/gle/"  (don't miss off the trailing slash)

To test SURFACE you will need to define SURF_TOP too.

	export SURF_TOP="/home/mydir/gle/util/surf/"

These defines are not needed once gle is installed in the system directories.

If you are going to want to test it before copying it to /usr/local/bin
then you might want to add GLE_TOP into your PATH.

	export PATH=$PATH:/home/mydir/gle

It might be worth touching the files as TAR doesn't always 
get the dates right (which confuses make):
	touch gle/*
	touch gle/*/*
	touch gle/*/*/*
(if you are  building gle in a directory which already had a copy of 
gle then you might have to force make to recompile by deleting the
object files.
	rm *.o
)

Pick one of the files {config.*} which most matches
your machine and copy it to {config.i}, you may want 
to edit this file if you have xwindows or need to make 
some other simple change.

	ls config.*
	cp config.ultrix config.i

Now run make:
	make
Once that has completed type in:
	make doutils

To test gle out:
  Create yourself a gle directory to play in:
	mkdir gletest
	cd gletest
	cp ../demo/*  ( or /usr/local/gle/demo/*   to copy the examples)
	
  Then try it out (note: the command is gle, not cgle):
	../gle test.gle 		(For dumb terminals)
	../gle test.gle -dX	(For xwindows)
	../gle test.gle -dtek	(Tektronix 4010 terminals)
	../gle test.gle -dregis 	(Regis, vt240, vt340)
	../gle test.gle -dhpgl  	(HP plotters)
	../gle test.gle -dps	(To produce PostScript output)

(NOTE: if you already have gle installed in a system path then
the old version of gle will be picked up rather than the new version
 (even using gle_path).  To avoid this problem you should temporarily 
remove gle from your path variable, you can also run specific
gle drivers using:
	../gle_ps  (PostScript)
	../gle_vt  (terminal)


	(You must replace ../ with the path to where the gle executables
	were created)

	(To load a different example press ^F 3, then ^F 0 to draw it)

To install gle executables in /usr/bin and the gle help,font and example
files into /usr/local/gle enter the command:
	install.com

If you wish to install gle in a different directory permenently 
then you can modify the file {glepath.h} and then recompile or 
you can use the environment variable GLE_TOP

After checking that gle is working correctly you can delete
the source files to save a lot of space:
	cd ..
	rm gle -r		

Once gle has been installed the commands that are added are:

	gle		Graphics Language Editor, graphs and slides.
	surface		Plots hidden line wire mesh 3d plots
	fitls		Fit's best fit least squares line to any equation
	fitz		Creating even grid data from random xyz data
	letz		Creating grid of values from expression
	manip		Data manipulation

There is a postscript copy of the manual in
	gle33b.ps.Z

If you have to make changes to install GLE on your machine please
send them to me.

				Thanks,  Chris.  (srghcxp@grv.dsir.govt.nz)