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这是几何代数的matlab工具包

% GABLE, Copyright (c) 1999, University of Amsterdam
% Copying, use and development for non-commercial purposes permitted.
%          All rights for commercial use reserved; for more information
%          contact Leo Dorst ([e-mail]).
%
%          This software is unsupported.

This is a test version of GABLE.  Please report any problems or
comments to
	[e-mail], [e-mail]

GABLE is a Matlab toolkit for geometric algebra.  
Documentation for GABLE is available at
    http://www.wins.uva.nl/~leo/clifford/gable.html
    http://www.cgl.uwaterloo.ca/~smann/gable.html

GABLE runs with Matlab 5.2, Matlab 5.3, and Matlab 6.1.

To install GABLE, untar or unzip it in a directory called
gable.  Then add the full path to this directory (including
'gable') to your Matlab path with the 'addpath' command.
====================================================================
Changes from version 1.2 to version 1.3
	1. Fixed name in GAdemo
	2. Fixed frames to work with all signatures
	3. Fixed smallinverse for non-Euclidean signatures
	4. Added DrawPoint.m
	5. Fixed divide by zero bug in GAorbiter (when run on VERY
	   slow machines).
====================================================================
Changes from version 1.1 to version 1.2
	1. GAorbit has been removed from the tutorial and replaced
		by GAorbiter.
	2. The behaviour of GAorbiter has been changed to take
		total angle and time of rotation as optional
		arguments.
	3. A bug was fixed in GAdual.
	4. Added GAtilt command.
	5. Changed GAprompt to allow for mouse clicks.
	6. Changed DrawPolygon/DrawPolyline to handle zero
		vectors.
	7. Changed GAtext to return a handle to allow you to
		delete, etc., the text.
====================================================================