scinvopt.m

来自「computation of conformal maps to polygon」· M 代码 · 共 25 行

function [ode,newton,tol,maxiter] = scinvopt(options)
%SCINVOPT Parameters used by S-C inverse-mapping routines.
%   OPTIONS(1): Algorithm (default 0)
%           0--use ode to get initial guess, then Newton iters.
%           1--use ode only
%           2--use Newton only; take Z0 as initial guess
%   OPTIONS(2): Error tolerance for solution (default 1e-8)
%   OPTIONS(3): Maximum number of Newton iterations (default 10)
%
%   See also HPINVMAP, DINVMAP, DEINVMAP, RINVMAP, STINVMAP.
   
%   Copyright 1998 by Toby Driscoll.
%   $Id: scinvopt.m 9 1998-05-10 04:55:10Z tad $

user = options;
lenu = length(user);
options = zeros(1,3);
options(1:lenu) = user(1:lenu);
options = options + (options==0).*[0,1e-8,10];

ode = options(1)==0 | options(1)==1;
newton = options(1)==0 | options(1)==2;
tol = options(2);
maxiter = options(3);