This is an example of how to create an line plot from a function in MATLAB®.
Read about the fimplicit function in the MATLAB documentation. This function is available in R2016b or newer.
For more examples, go to MATLAB Plot Gallery
% Check version if verLessThan('matlab','9.1') error(['fimplicit is available in R2016b or newer. ', ... 'For older releases, use ezplot instead.']) end % Create the plot using the lemniscate function f(x,y) = (x^2 + y^2)^2 - x^2 + y^2 figure fimplicit(@(x,y) (x.^2 + y.^2).^2 - x.^2 + y.^2, [-1.1 1.1 -1.1 1.1]) % Adjust the colormap to plot the function in blue colormap([0 0 1]) % Add a multi-line title title({'Lemniscate Function', '(x^2 + y^2)^2 - x^2 + y^2'})
