AxisEqual:

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   Equalize the axes with a minimum relative size for the smallest axis.
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   Usage:
   AxisEqual( axisHandle, minSize, dim );
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   Inputs
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   axisHandle    (1,1)  Handle to the axis
   minSize       (1,1)  Minimum size of smallest axis, expressed as a
                          percentage of the maximum axis size.
                          Optional. Default is 0.1.
   dim           (1,1)  Dimension (2 or 3). Optional. Default is 3.

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   Outputs
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   none 

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