matlab画三维函数参数⽅程,如何在matlab中绘制含有三个参
数⽅程的三维图形 讯享网
【1】ezimplot3 存储该M⽂件，并将⽂件路径设置为matlab当前路径 function h = ezimplot3(fun,domain,n,color) % EZIMPLOT3 Easy to use 3D implicit plotter. % EZIMPLOT3(FUN) plots the inline function FUN(X,Y,Z) = 0 over the % default domain -2*PI X 2*PI, -2*PI Y 2*PI, -2*PI Z 2*PI. % % EZIMPLOT3(FUN,DOMAIN)plots FUN over the specified DOMAIN instead of the % default domain. DOMAIN can be the vector [XMIN,XMAX,YMIN,YMAX,ZMIN,ZMAX] % or the vector A,B. % % EZIMPLOT3(…,N) plots FUN over the default domain using an N-by-N grid. % The default value for N is 60. % % Example % Plot x^3+exp(y)-cosh(z)=4 % % via a string: f=x^3+exp(y)-cosh(z)-4 % ezimplot3(f) % % via a vectorized function handle: f = @(x,y,z) x.^3+exp(y)-cosh(z)-4 % ezimplot3(f) % % Note: this function do not use the ezgraph3 standard, like ezsurf, ezmesh % ,etc, does. Because of that, ezimplot3 only tries to imitate that % interface. A future work must be to modify the ezgraph3 to include a % routine for implicit surfaces based on this file % % Inspired by works of: A.Jutan UWO 02-02-98 % Made by: G.Morales UC 03-20-09 % if nargin == 1 domain = [-2*pi, 2*pi]; % default domain: -2*pi xi 2*pi n = 60; % default grid size elseif nargin == 2 n = 60; % just default grid end if size(domain,2) == 2 domain = repmat(domain,1,3); %domain repeated in all variables end xm = linspace(domain(1), domain(2), n); % generating the volume data ym = linspace(domain(3), domain(4), n); zm = linspace(domain(5), domain(6), n); [x,y,z] = meshgrid(xm, ym, zm); if ischar(fun) fun = inline(vectorize(fun)); % making sure string fun is vectorized fvalues = feval(fun,x,y,z); % evaluating fun in domain elseif isa(f
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