MathGroup Archive 2001

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How can I creat a user coordinate system for my routine?


Dear friend,
In mathematica4,the default coordinate system is world
coordinate system(WCS),for example,on the XOY
plane,the point pt={10,0} is on the right side of
original poins {0,0}.Now I want to turn the WCS to be
a user coordinate system(UCS) in which the direction
of the Y axis is not changed but that of X axis is
reversed,what should I do?The UCS must be created
before running my routines because my routines are
based on the the UCS but not WCS.

 Best Regards,
                Liwen    1/26/2001

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