|
|
EDA365欢迎您登录！
您需要 登录 才可以下载或查看，没有帐号？注册
x
想用三角函数拟合一组数据 结果一直报错 感谢大神解答 程序就是源程序clear;
! q. z0 J# _9 b; Z3 Xtheta=linspace(0,rad2deg(2*pi),181);4 |4 r \) ~( X0 |# ^- |9 F
y1=[0.512
1 R% \" V% M. B; i4 J0.471
4 [# c4 ^- \* t5 x$ A) D9 e- b0.445
# N. r! Y. \" k0 x" d, s4 v% k0.4080 H0 I! L( x7 x' _0 F
0.382
@: N# r5 u/ o. j W1 U0.3470 _" {9 G8 Y3 E0 s
0.33
3 j; _/ O, s/ k0.295
6 l* H+ ]8 V+ A0 u$ I0.2759 J8 @! p# e+ J7 s7 o' |1 P
0.2449& U8 ~( m, V7 h
0.2222
% a6 [3 c5 D s0.1974
+ r" [6 x" `* J" H/ N4 F7 L0.1792
/ p6 d h% H( a0.1573
9 M5 a {7 j O* w1 W- r: j, N; [6 V# i0.1447
' u& \0 k5 j; ?& @7 M' T" Q+ I) T0.1289- w+ F) K$ a" Z3 N* }5 b
0.1155
% `3 M' C7 D: `' G0.1072
2 ^0 U" \- {0 _) H; K7 C# [0.0991% d+ O. f- o2 q5 N. w5 }7 a
0.0929 g8 q2 f* f) X
0.0877
; S' q! \6 n5 q0.08417 z* y; N4 [3 G1 f# H' p" @3 v q
0.0842
: f/ r* q z: ~) u2 \0 i* z0.0856
' ?; d. e' W6 y/ k( _3 V0.0869
2 ?! B1 _/ t2 ?1 R3 c' }0.0929
, R j* G+ Q( \3 O2 e' f, V P0.1027
' U5 Q C* V% c6 C( s$ s* y$ R5 ^0.10645 h4 A* q8 h/ ]) W& ?* [
0.1165, u: i2 E0 o# }5 h" Q/ ?
0.1295/ T( H4 p( k% ]1 y
0.1447
5 Y! Y" @! d) U; }: C0.1558 p6 C/ k8 N0 z
0.16965 ]- h4 s7 S y7 G9 v6 S' J
0.19" o* i- f6 y0 B6 ]+ r/ \+ ^1 s* z& e
0.21, h% z; n1 ]: N$ Z
0.2287; l% F5 S: D5 @. v' ^: I
0.2496
9 u' `# G- ?3 o/ k% T0.2719
1 [$ ^2 F H# B% ?0.2986
; Q% t6 l# N# K: g* X9 \3 y0.3246
; r$ H7 c( Z; o p' {+ X0.343
& p8 W) j b$ {7 w4 I A0.372
$ S* P6 r! l7 R; @; u! F6 k1 v0.393
- B! l# `# l G/ V4 a8 n+ Q0.4154 C {6 J- m5 K' e
0.444
' X' y" Y7 I7 y" m/ d. ^) i0.477 `- q) g3 w3 k# p; o" g
0.494! T( v( n) k1 p& z8 ]
0.5135 m" B5 p1 Q, M4 l- ^
0.542
- u8 T2 N) P8 w C+ x/ P1 A/ E6 N7 N& R0.5730 S! j I6 {) M( |) F. e2 y
0.6
$ C P8 @' P5 m0.613/ G5 c6 t9 |6 Q; @$ c: U
0.636- Z- d! I! G& v& ~. s
0.652
4 [6 \1 Y. J X0 A% P1 T7 R0.675; q* i; q9 Z4 E5 W D6 m/ G
0.697
: `% {$ U: U; T; |' G4 @& G0.71
( k" F0 r' a% r! W1 {4 l0 i( x0.729
2 z0 z r, y; Q0 S/ V0.742! [4 J; c/ M7 i g' y1 C
0.76
; h7 A7 W+ M5 L1 X0.767$ x1 S$ W$ k9 d( v" i
0.777
/ H3 S1 a; `/ p* z3 c R0.785
& S3 }. m. p9 g0.79
+ L; \7 D4 b! x# Z0.7921 k( R; U/ W4 v- ]' T {. p/ e% Q% D
0.799
% a% ?0 U! x0 u1 r9 o, f0.8089 i% U" i' o8 U( B9 G Z
0.795* \* I/ }: G2 D4 ?' ^$ i4 X
0.794
+ A. x7 D+ b7 N; S9 n( w0.789
! W4 u0 j* C8 @0 C6 {0 f' W. S9 [2 X! K0.786: ]. H( F) l+ z" u% G
0.785
$ |; E2 ~1 n' P; D9 ~+ E! G0.782 \: [. D4 ^" ~
0.7736 j4 n7 X. f0 j8 l! L
0.766% R1 V7 g! ?& s2 u, P# N4 j8 t
0.746" l3 b, D" g4 q; M" A# n
0.726
z% Z$ \+ Z( y, w9 H4 X2 S+ i0.709" [/ B" q2 E+ R' ~ I7 N M% {: k
0.697
( G! W; [- G2 @+ V& H4 x) U0.678
/ Q+ a$ `2 P& O4 z6 }$ K0.6584 @% F; ~& T8 p: R
0.639
3 @ E- J) H1 d. p4 A) v" t: N0 ?0.611
% Q" o S6 k( \0.597
, T# c2 z$ \( t9 ?' R! G( J: R0.568
) {6 ?" u/ l7 M4 ]: i0.553
/ i' k: G$ s8 [( q0.522, }5 k$ H0 T( W, T9 ^
0.501' {* V6 d3 U+ B, ?
0.477; H, `, y) W$ T. p/ a
0.45; i; L) ?# ~0 R6 l
0.421 w. W) P- B8 y/ c* A# Y% b& Z) [* f
0.396
) c3 P, _! f7 i, M& T7 F* [0.373, O L* J& o/ j) [# z
0.342
( \9 v1 F8 X) h% U3 u) k" y0.3196& Q( @- ?# E8 x5 h
0.2984/ | }# A* C- i3 @- p
0.2686
, s/ `/ A( [& U3 K" q/ N; s$ ?0.2559* A- O& S) l+ x$ K
0.2146
+ P7 Z/ @! S) h; Y* s* U0.206
4 l. X! @" V( G& C% h9 Y0.1936
. e1 {: r5 L Z, @, G+ d4 Q0.169
8 w7 I. _' e- x# P+ \; [! g: j( E0.1516
6 c7 d1 ]3 N9 j6 |0.1428' ?$ o2 o( ]. \4 B. p9 B
0.1234* V7 Y+ u2 B) {7 w) u1 s
0.11398 m A) p! I/ Y' [8 Y. H/ `
0.1051& `3 I4 _6 {: e) h
0.09620 d3 j2 J8 @( l O* T0 x* ?; e" Z
0.0895. C* E3 j: I J- N# K
0.0837
2 U6 y6 s" Y( E8 z2 m3 X0.0802
' k" i, I' C0 U0 E; `0.0782
2 G! `' M3 M9 x1 B0.081
5 Q. N% E! c: p: n( }; m- a) j0.0798
2 F& I% E' r9 ~, v9 f; Z: E7 @0.0824
. _( ]' T+ r9 i% C/ ]" o5 g' O! i0.087
) ~/ ~8 i+ Y! o& b2 m1 A0.0921
+ k, d" V9 H( Y; w! ?0.1017
- i1 T9 j* w) A8 `2 U3 @7 j0.1089
& a" [7 e1 o1 D9 A4 F, e0 q- q0.12058 l G% s# z( m1 [( A' C# e
0.1345( t9 x' p" i% P. c
0.1467
7 Z( \. b" e& J& P7 g6 j0.16+ Z" H6 S0 r/ V/ q* D
0.17590 c; c& g3 O" v7 l
0.1947; A5 q \. R$ J/ g
0.2144
, \6 K' R9 N/ c% T& e; X0.2307% h. U/ p5 r4 s, @3 }- H
0.2553
+ b8 y1 F c2 i$ V0.241
6 S9 a& ]; u5 Y5 k8 S$ K n0.30029 {8 N% U4 [' e0 ?
0.3268+ @+ |# m1 `% Y u5 F$ U
0.348
3 x1 |* g* S: y- N! O0.369
; `$ n( V+ c Q* l& }5 J9 D0.399
: q" R4 g" v* p& _: C: F0.42 N( v2 r2 Q. Q2 ~' H7 m, |0 k
0.44" A0 A$ m" V2 X4 F) k6 J( m
0.466
% M1 F9 a6 b+ {5 K/ X% C* l- A0.492; e, U n: T( W0 V- @
0.51
# z' V* @0 P a6 m( m* Z+ A3 u0.535
. `: ?4 R$ _6 G' ]0.5550 x' Q1 _7 r; Z" n
0.5768 A _+ X3 Y) }& z7 j! J9 S6 v
0.592
1 k1 Z( ~: g7 c% \- r" n a0.6229 [+ e3 A1 R- v# H2 J/ l$ _
0.638" n+ X+ O8 Y% y9 d D
0.648
- J( r0 X# x" f" E$ a& r+ j1 y0.666' \3 F3 S" i7 N1 A. A1 }+ ]
0.683
( z3 g3 w* u, q2 c0.7033 j. ]. i6 H+ p& h) C
0.7141 _8 Y) h8 N5 J+ O i
0.7225 a6 F# s& z( w! R6 f6 c' R! b
0.749( o3 G8 R E: y' M" Y& Q3 V" Y! i
0.752
, d! m! [! _1 L3 G4 j S0.752( a5 H& b7 O/ b: }* V1 P/ U( z& E
0.759# u* z/ r3 v+ Q/ `* w5 t) h
0.76
0 \( l& d6 O1 B0.759
@; f8 T. n8 t. L. H, A0.754
- E# \! z9 Z4 r2 ?1 `" D0.7528 ?% F# Z5 X \) |2 G/ U; h
0.754
% Z- i" b6 u9 h) ^) b" d" S0.751+ p, ]% V, F5 r# j
0.746
. x$ N- U9 w! C' Y" Q; u, G3 P0.741
/ ?$ a+ Q0 @2 e1 c5 N# ?7 b0.728: N, i$ C! R. j' Q
0.7151 W7 }# n) K& W# L. E' v
0.702/ k* P0 M' ^) m4 \& ]1 W
0.684, R0 g1 e# u/ g7 R+ F2 M6 I: ^( p
0.677$ i3 ~: @( C) S2 y3 H% S
0.662
' K3 ^( R! m. b$ ~: I8 q1 J h0.6351 T# B. }0 B7 R/ u2 h$ u
0.621 y5 e* {7 w, D: g1 d7 j
0.598
$ J3 q2 X7 |7 e' k* [" P7 U0.586
) H5 H; Z9 b2 S) ]0.561 b* x. u, J5 Z5 G) b9 U( V) k
0.537
, r( c- F9 f- _; F! y0.513
* F4 i3 I' E% J. j+ u' Y4 F8 K0.494: q5 `/ z9 Z+ h8 k6 T$ @* N! B. T. K
0.462- g' F: l1 H& ], b" N8 ?1 j" x5 v6 z
0.443: ^* |, E, I) d2 r4 ^7 F
0.414
7 y% V4 {5 b" Q9 M& D2 a4 G0.385]';
) B) b) b+ g1 v% [5000 0 25000 3*pi/55],; m8 i- E; M* O7 S
a=[0.4 0.1 0.4];
/ K2 w% U# ~4 [# `1 X* ^6 Vfunc_sin = @(a,theta) a(1)*(sin((theta)+a(2)))^2 + a(3);( x# @+ u) V' K) n6 _2 ?
A= lsqcurvefit( func_sin,a,theta,y1);# L; c* @9 R# f' J- A
disp(A)9 b% x0 c! C' o) f
- b' i. ]2 K* p$ f+ ?; a
* |. x/ W, E2 k' J; U错误类型：
! y" p% P! ]* \- f
4 I& l6 r, N6 j/ @出错 Untitledexperiment (line 187)7 C# E9 U3 r" x2 u- L- h
A= lsqcurvefit( func_sin,a,theta,y1);6 C( k k6 ^5 @# ]) e* G
* x6 h E+ O K6 d4 T2 Q
原因:5 n$ t6 W) A" L9 |# _+ d. w
Failure in initial user-supplied objective function evaluation. LSQCURVEFIT cannot continue. |
|
/1 
发表于 2020-3-12 13:56
收藏
淘帖
支持！
反对！