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Groups > comp.lang.java.gui > #4563

Re: plot quadratic equation graph

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On May 22, 3:57 pm, "John B. Matthews" <nos...@nospam.invalid> wrote:
> In article
> <e00e980a-1a65-4564-b36f-f94f11d98...@j13g2000pro.googlegroups.com>,
>
>  SamuelXiao <foolsmart2...@gmail.com> wrote:
> > I am writing a japplet to plot the quadratic equation graph, that is,
> > y=ax^2+bx+c.  I found JFreeChart does not display negative x and y.
>
> That is not my experience, as shown in this example:
>
> <https://sites.google.com/site/drjohnbmatthews/jfreechartdemo>
>
> Function2DDemo1, a parabola, is another example:
>
> <http://www.jfree.org/jfreechart/jfreechart-1.0.13-demo.jnlp>
>
> With a suitable transformation, even conventional polar plots are
> possible:
>
> <http://stackoverflow.com/questions/3467341>
>
> > Does anyone know how to do it? When I input a, b and c and press the
> > plot button, the corresponding graph should be plotted with smooth
> > line. For a,b,c and button part, I have done. Now just not know how
> > to make the graph plotting.
>
> > Any help would be highly appreciated.
>
> Here's a simple example that draws a portion of y = sin x:
>
> <http://groups.google.com/group/comp.lang.java.programmer/msg/84a4c123...>
>
> If you have access to Mac OS X, Grapher is particularly nice:
>
> <http://en.wikipedia.org/wiki/Grapher>
>
> --
> John B. Matthews
> trashgod at gmail dot com
> <http://sites.google.com/site/drjohnbmatthews>

Thanks all, the problem has been resolved.

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plot quadratic equation graph SamuelXiao <foolsmart2005@gmail.com> - 2011-05-21 22:12 -0700
  Re: plot quadratic equation graph "John B. Matthews" <nospam@nospam.invalid> - 2011-05-22 03:57 -0400
    Re: plot quadratic equation graph SamuelXiao <foolsmart2005@gmail.com> - 2011-05-28 07:20 -0700
      Re: plot quadratic equation graph "John B. Matthews" <nospam@nospam.invalid> - 2011-05-28 23:12 -0400
        Re: plot quadratic equation graph SamuelXiao <foolsmart2005@gmail.com> - 2011-05-29 06:40 -0700
          Re: plot quadratic equation graph "John B. Matthews" <nospam@nospam.invalid> - 2011-05-29 14:59 -0400
            Re: plot quadratic equation graph Lewis Bloch <lewisbloch@google.com> - 2011-06-20 09:06 -0700
  Re: plot quadratic equation graph Roedy Green <see_website@mindprod.com.invalid> - 2011-05-26 09:58 -0700

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