                           Graph Redigitizer

A graphics tool for reading coordinates of data points from linear and
logscaled graphs. The input is a GIF file, the output is a two-column
table containing the coordinates of the points marked by you.

Written in Java, so you must have JDK installed (1.1 or later).

http://www.kfki.hu/~cspeter/grdig/


                            Installation

If you have received grdig in a tar.gz or zip file, then you have to
install the program manually:
Edit bin/grdig (in unix) or dos/grdig.bat (in windows), set the GRDIGHOME
environment variable, then copy the file into a directory which is in your
PATH.
Try running grdig. If you get an error, for example "Unable to initialize
threads: cannot find class java/lang/Thread", it probably means that you
also have to set the path for the core Java class library (classes.zip file
in JDK, Klasses.jar in Kaffe) in CLASSPATH.


                       Files in this directory

README		- this file
COPYING		- the copyright
ChangeLog	- the history
demo.gif	- demo graph containg particle spectra
demo-kaons.data	- "redigitized" kaon spectrum from demo.gif


                         Starting the program

If you want grdig to immediately load a GIF file or a datafile after
starting, run it by typing "grdig filename" in the command line or
- alternatively - by dropping the file onto the program's icon.
(Try "grdig demo.gif" and "grdig demo-kaons.data".)



Happy graph redigitizing,

	Peter Csizmadia <cspeter@rmki.kfki.hu>
