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@menu
* Functions and Variables for implicit_plot::
@end menu
@node Functions and Variables for implicit_plot, , implicit_plot, implicit_plot
@section Functions and Variables for implicit_plot
@deffn {Function} implicit_plot (@var{expr}, @var{x_range}, @var{y_range})
@deffnx {Function} implicit_plot ([@var{expr_1}, ..., @var{expr_n}], @var{x_range}, @var{y_range})
Displays a plot of one or more expressions in implicit
form. @var{expr} is the expression to be plotted, @var{x_range} the
range of the horizontal axis and @var{y_range} the range of vertical
axis. @code{implicit_plot} respects global setting for the gnuplot
driver set by the @var{set_plot_option} function. Options can also be passed to
@code{implicit_plot} function as optional arguments.
@code{implicit_plot} works by tracking sign changes on the area
given by @var{x_range} and @var{y_range} and can fail for complicated
expressions.
@code{load(implicit_plot)} loads this function.
Example:
@example
(%i1) implicit_plot (x^2 = y^3 - 3*y + 1, [x, -4, 4], [y, -4, 4],
[gnuplot_preamble, "set zeroaxis"]);
@end example
@ifnotinfo
@image{figures/implicit_plot,8cm}
@end ifnotinfo
@opencatbox
@category{Plotting} @category{Share packages} @category{Package implicit_plot}
@closecatbox
@end deffn
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