?? pare_initphi.m
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function x = pare_initphi (X, x);%PARE_INITPHI%% x = pare_initphi (X, x);% assigns approximate values for angles% relative to the transformed system.%% X: given points <X(i,1), X(i,2)>% x: parameters%% x: parameters, with 'phi' values approximate% nearest point angles [phi, alpha, a, b, z] = pare_get (x); c = cos(alpha); s = sin(alpha); Q = [c -s; s c]; % compute initial approximations for phi_i du = Q'*[ X(:,1)-z(1) X(:,2)-z(2)]'; phi = angle(du(1,:)/a + sqrt(-1)*du(2,:)/b)'; x = pare_set (x, phi, [], [], [], []);end % pare_initphi?? 快捷鍵說明
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