gusucode.com > demos工具箱matlab源码程序 > demos/cplxmap.m
function cplxmap(z,w,B) %CPLXMAP Plot a function of a complex variable. % CPLXMAP(z,f(z),(optional bound)) % Used by CPLXDEMO. % % See also CPLXGRID. % Copyright 1984-2014 The MathWorks, Inc. blue = 0.2; x = real(z); y = imag(z); u = real(w); v = imag(w); if nargin > 2 k = find((abs(w) > B) | isnan(abs(w))); if length(k) > 0 u(k) = B*sign(u(k)); v(k) = zeros(size(k)); v = v/max(max(abs(v))); v(k) = NaN*ones(size(k)); end end M = max(max(u)); m = min(min(u)); axis([-1 1 -1 1 m M]); caxis([-1 1]); s = ones(size(z)); mesh(x,y,m*s,blue*s); hold on surf(x,y,u,v); hold off colormap(hsv(64))