plotting bar charts

[Chin Fang]

I believe your best bet is xgraph.  Part of the original README.ANNOUNCEMENT 
is given below.

Regards,

Chin Fang
Mechanical Engineering Department
Stanford University
fangchin at leland.stanford.edu

*************************  part of xgraph README.ANNOUNCEMENT *****************
This program is NOT a widget.  It is a stand-alone program written at
the Xlib level and should run on any machine with a reasonable
implementation of X11 release 3 or later.  The source for the program
is available through anonymous ftp to shambhala.Berkeley.EDU
(128.32.132.54):

        % ftp shambhala.Berkeley.EDU
        Name: anonymous
        Password: <anything non-null>
        ftp> cd pub
        ftp> binary
        ftp> get xgraph-11.tar.Z
        ftp> quit
        % uncompress xgraph-11.tar.Z
        % tar xf xgraph-11.tar