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MathGroup Archive 2001

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

  • To: mathgroup at smc.vnet.net
  • Subject: [mg26887] How can I creat a user coordinate system for my routine?
  • From: liwen liwen <gzgear at yahoo.com>
  • Date: Fri, 26 Jan 2001 01:27:31 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

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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