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Re: Strange RegionPlot


Dear Bruce,

Increase the plotting resolution using the PlotPoints option:

RegionPlot[x + y < 4 && x - y > 3, {x, -20, 25}, {y, -20, 10},
 PlotPoints -> 100]

Ricardo


On 9/26/07, Bruce Colletti <vze269bv at verizon.net> wrote:
>
> Re 6.0.1 under Windows XP.
>
> The region returned by:
>
> RegionPlot[x + y < 4 && x - y > 3, {x, -20, 25}, {y, -20, 10}]
>
> should be triangular.  Yet the apex is a short line segment and not a
> vertex.
>
> What creates this segment, and what must one do to get the
> vertex?  Thankx.
>
> Bruce
>
>


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