expFit
                         ------

The program expFit illustrates use of ROOT classes including TMinuit
for doing a maximum likelihood fit.  This is not Elegant Programming
but illustrates a few things you can do with these classes.

Download all the files to a separate directory and type gmake to build
the program expFit.  You may need to modify some environment variables
such as ROOTSYS; please consult your local ROOT expert.

When you execute expFit it will give you a prompt.  Your first command
should be

input

which will prompt you for a file name with input data.  Answer with
mltest.dat.  Then you can have minuit carry out any of its algorithms
such as "simplex" or "migrad", and these can also be abbreviated.  Try
typing "sim" and then "mig" (no quotes).  Finally type "plot".

This is not bullet-proof code -- just something to illustrate the
main ideas.  Please let me know if you see any major problems.


G. Cowan
RHUL Physics Dept.
g.cowan@rhul.ac.uk