??? Undefined function or method 'PathLength' for input arguments of type 'double'.6 g0 R& R9 R0 Y' S9 A
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Error in ==> Metropolis at 10$ N. }; I) a \0 T
R1=PathLength(D,S1);# U5 ]) V+ e% f1 L, k$ e5 k) p: x
这是出现的错误。# e% ?: Z6 Y) w; Y& m& }0 ?# M
5 v5 k5 d8 K8 C0 e1 y& n代码:function [S,R]=Metropolis(S1,S2,D,T)" W: }$ E( V) r; Q: _
S1=[1 4 5 3 2];5 x' l, R+ O( E: s+ m2 b
S2=[4 1 5 3 2];+ r+ R% e! n9 N3 `8 E
D=[ 0 116.8118 144.0139 35.3836 146.6322; J1 d: W( ` C
116.8118 0 177.7104 151.7267 263.4274% `! _% ^- }* B
144.0139 177.7104 0 157.1751 211.6814 $ h2 X* R, L: O, D% _) X 35.3836 151.7267 157.1751 0 112.25427 W8 J# d/ o$ `3 s% m
146.6322 263.4274 211.6814 112.2542 0];( P9 e7 k. `) B* L
T=1000; 5 k5 x, E, f5 _8 @4 A: J4 H9 S9 tR1=PathLength(D,S1); 3 P, t- W7 ~5 C xN=length(S1);: K) v, s# g+ |0 ^
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R2=PathLength(D,S2);0 Z' I4 m* e: l9 e% h4 C
dC=R2-R1;4 p6 Q3 F1 L5 [7 ?5 ?$ \ K# r# X
if dC<08 |! U) P1 E" H! @' Q- q8 K
S=S2;: T: r) r, o0 x) K
R=R2;: ?# Z* G, z/ ?* D9 q, Y
elseif exp(-dC/T)>=rand ) C) w8 J8 G/ Y$ ] R1 G1 G S=S2;6 v$ ]$ ]0 n0 k; ~
R=R2;7 b8 k! {" q& [; L& Z
else ( {) ]6 b$ h& r& ^9 v+ q8 i S=S1;; w- s; {, a$ a3 N
R=R1; / A/ w" j1 o5 H; Q2 Kend