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Re: Hatched shading?
*To*: mathgroup at smc.vnet.net
*Subject*: [mg111167] Re: Hatched shading?
*From*: annetts729 <annetts729 at gmail.com>
*Date*: Thu, 22 Jul 2010 05:44:30 -0400 (EDT)
*References*: <i1u25i$80d$1@smc.vnet.net> <i23k1u$eqc$1@smc.vnet.net>
On Jul 21, 7:10 pm, "Alexey Popkov" <lehi... at gmail.com> wrote:
> Hello,
>
> I confirm this behavior on Windows XP SP3 with Mathematica 7.0.1. All the
> red lines get out of the region defined by RegionFunction.
>
> "ADL" <alberto.dilu... at tiscali.it> news:i23k1u$eqc$1 at smc.vnet.net...
>
> > Following what Bob brilliantly suggested, I found a possible bug in
> > Mathematica 7.0.1 for Windows.
> > If you type the following, you will get a couple of red lines getting
> > out of their boundary:
>
> > f[x_] := Sin[x];
>
> > Plot[
> > {Table[(x - k)/3, {k, -3, 3, .10}], f[3x]},
> > {x, 0, 3},
> > PlotRange -> {0, 1},
> > RegionFunction -> Function[{x, y}, 0 < y <= f[3x]],
> > PlotStyle -> {
> > Directive[ AbsoluteThickness[4], Red],
> > Directive[ Thick, Blue]
> > }
> > ]
>
> > Does anybody else confirms this?
>
> > ADL
Yeah -- there are red lines.
But I'd suggest it's an artifact of plotting rather than a bug per se.
Look at
f[x_] := Sin[x];
Plot[{Table[(x - k)/3, {k, -3, 3, .10}], f[3 x]}, {x, 0, 3},
PlotRange -> {0, 1},
RegionFunction -> Function[{x, y}, 0 < y <= f[3 x]],
PlotStyle -> {Directive[AbsoluteThickness[4], Red],
Directive[Thick, Blue]},
PlotPoints -> #, ImageSize -> 500] & /@ {25, 50, 75, 100}
Regards,
Dave.
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