ScGraph  version 2.1
=============================================================


About ScGraph
--------------

ScGraph is a Delphi 2 Scattergraph (Scientific graph) component
for presenting scientific/technical x/y-data as scatterplots. 
A maximum of 6 data series of 600 data points each can be displayed.
In this version of ScGraph reference lines and areas have
been added and some procedures have been adapted.

The basis for this component was version 1.0 of a graphing 
component xyGraph by:

Grahame Grieve, Biochemistry, St Vincent's Hospital
Victoria Parade, Fitzroy, 3065, Australia,
(g.grieve@pgrad.unimelb.edu.au),

which is gratefully acknowledged. There exist also further 
developments of xyGraph (currently version 2.3).

This program is distributed as Freeware but is not supposed 
to be used in commercial applications. You use it completely 
at your own risk. You may distribute and use this program in 
any manner, as long as the following conditions are met:

1) The files (ScGraph.hlp and ScGraph.txt) accompany the unit, 
   and are not modified.
2) No modifications are made to the units and code.
3) No fees are charged for the unit or programs using ScGraph.
4) If you wish to include this file in a collection of 
   Freeware/Shareware utilities, I would like a copy of that 
   collection/cdrom.

Installation
------------

After copying to a suitable directory install as customary in Delphi2.
From main menu drop down Component + Install and click the Add button.
Find path and file name of where the TScGraph module (ScGraph.dcu) is
located. Click on OK. The component should now appear in a 'Graph'
folder within Delphi. 

Test it using the demo applications:

ScGDemo: shows various properties of ScGraph.

MultiGr: example for using multiple graphs.

The help file ScGraph.hlp can only be used as a windows readable
help file. It cannot yet be included into the Delphi help system.

DISCLAIMER
----------

No warranty whatsoever is given that the software or documentation 
is "error free" or meets any user's particular standards, 
requirements, or needs. Therefore, the author can not be made 
liable for any error or claims that arise directly or indirectly 
from the use of this software. The author is not responsible for 
any damage caused by using this component.


Bugs
----
Faulty drawing of grids and ticks results from scale intersections
extremely wide outside of the scale range.

No fatal bugs are known to me for the time being in my environment
(which is somewhat limited with respect to possible variations in
hardware).

Slow routines for drawing patterned lines with line widths > 1, 
in particular printing such graphs on PostScript printers
could result in long printing times.

Printing ScGraph with the method provided yields a practicable
output with my printers (HP-4MP, HP-2P and Tektronix 480) but 
I could imagine there might be troubles with some other
printers/drivers.

If you find any bugs or have comments please send a mail.

Enjoy,

Robert Nowotny
R.Nowotny@bmtp.akh-wien.ac.at
