This file contains instructions for building the X11 version of xgraph.
When unpacked,  the source is distributed in three directories:

	xgraph-11		Source for the program
	xgraph-11/bitmaps	Bitmaps used for cursors and markers
	xgraph-11/examples	Sample data for trying out the program

First, you should examine the file hard_devices.c.  This file lists
the default hardcopy parameters for each hardcopy output device.  Some
of these defaults are site-specific and should be taylored to your
site.  For example, at our site, the default HPGL plotter is called
"paper" and the default Postscript printer is called "lps40".  You can
change these names in this file.  See hard_devices.h for a description
of the initialization fields.

If you do not like the default values for xgraph options, you can
change these by editing the default values as listed on the third page
in xgraph.c.  Remember that changing these values changes the default
behaviour for everyone running the program.  Personal preference
should be left for specification in the user's Xresources or Xdefaults
file.

An Imakefile is provided for compiling the program in an X11 release 3
source tree.  If you have such a source tree, type the following in
the xgraph-11 directory:

	% make TOP=<source-tree-top>

where <source-tree-top> is the top level directory of the X11 release
3 source tree.  If you don't have an X11 source tree but you have all
of the X libraries and include files installed in "standard
locations", type the following the in the xgraph-11 directory:

	% make -f Makefile.std

Either of these commands will produce an executable xgraph in the
xgraph-11 directory.  If you are installing the program in an X11
source tree, you can use the following to install the program and
manual page in the proper locations:

	% make TOP=<source-tree-top> install
	% make TOP=<source-tree-top> install.man

You might want to try these commands with the "-n" option once to make
sure the program and manual page are installed in the proper
directories.  If they aren't, you may want to change the DESTDIR
variable and try again.  If you really need to change the Makefile
options, you can generate a new Makefile from the Imakefile using
imake as provided on the X11 release tape.

Several example data sets are provided in the xgraph-11/examples
directory.  Try the following to check out xgraph:

	% xgraph examples/xgtest.xg

This should produce a graph with a series of parabolic curves.

Other documentation files are included.  A summary of these
files is given below:

README.ANNOUNCE		Message submitted to comp.windows.x announcing
			the program and how to obtain it.

README.GENERAL		Important notes about differences and quirks
			of the program.

README.HARDCOPY		Documenation for writing your own hardcopy
			driver library.

README.INSTALL		This file.

xgraph.man		Xgraph manual page.

			David Harrison
			UC Berkeley Electronics Research Lab
			(davidh@ic.Berkeley.EDU, ...!ucbvax!ucbcad!davidh)