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[Q]Mathematica: Alternative to GrayLevel for photocopies?

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  • Subject: [mg10502] [Q]Mathematica: Alternative to GrayLevel for photocopies?
  • From: (Christian Jost)
  • Date: Tue, 20 Jan 1998 02:22:50 -0500
  • Organization: Universite Paris-Sud XI

I need to separate two background areas in a 2-dimensional plot, with
some black lines drawn over them. For the moment I use GrayLevel[0.5]
and GrayLevel[0.9] respectively, but the resulting graphics look nice
only when printed with a laser printer, photocopies look awful. 

Is there some other pattern with which to fill areas, for example like
the pictures in newspapers (small dots for light gray areas, larger
dots for dark gray areas)? e.g. some option like
{Rectangle[{0.0,0.0},{1.0,1.0}],OffsetGray[0.5]}. The only criterium is
that photocopies conserve the information that there are two different
areas behind the black lines.

Thanks for any help, Christian.

Christian Jost, Universiti Paris-Sud XI, Orsay, France

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