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Maple 15, Windows7x64, Standard v. Classic

I have noticed that, on my system, the smoothness of some INLINE plots is better in Classic than in Standard. Is this some regression or some installation-specific quirck I wonder?

In Tools->Options, I have plot anti-aliasing enabled (whatever that is).

This looks alright in Classic

plots:-implicitplot(
  [ x^2 + y^2 = 1, x^2 + y^2 = 2 ]
  , x = -2 .. 2
  , y = -2 .. 2
  , 'color' = [red, green]
  , 'axes' = none
) ;

To obtain a similarly smooth-looking plot in Standard, I need to use the option gridrefine, for instance,

plots:-implicitplot(
  [ x^2 + y^2 = 1, x^2 + y^2 = 2 ]
  , x = -2 .. 2
  , y = -2 .. 2
  , 'color' = [red, green]
  , 'axes' = none
  , 'gridrefine' = 5
) ;

Without the option gridrefine, the Standard GUI Inline plot looks much less smooth than in Classic.

Just a comment in passing.

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