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' G3 x; N8 V0 _1 i2 {3 a& _最近做海洋要素大作业模拟二维潮波需要绘制同潮时线和等振幅线,提供程序如下,仅供参考
3 g) J( J* k- y6 ]9 |6 Vclear;
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9 B; O; A1 u9 {( `9 baa=load('rho_m2.dat');
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cc=load('thet_m2.dat');, d4 H- [% x- B/ a
7 Y/ E1 {6 y8 w3 q h+ k y2 V$ s2 zbb=flipud(aa);
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( A5 P" q; y. r2 f4 h* o' }cc=flipud(cc);
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bb(find(bb<0.01))=NaN;%陆地设为NaN
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2 {" t( E3 y1 ]# Pcc(find(cc<0.01))=NaN;
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m_proj('miller','lon',[117.50 126.83],'lat',[34 41]);, @9 h8 P, n' e# ?9 e4 W* Z" B$ u" P
1 u) W' n, S, Y5 Dlon1=linspace(117.50,126.83,56);: v: h- I9 \; g/ K' Z: x8 s
7 R$ F9 K; G% f& V% I! W" plat1=linspace(34,41,43);
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[lon1,lat1]=meshgrid(lon1,lat1);/ E5 b4 @' ?& m! D; f8 A
/ R) n1 n. G( z[c,h]=m_contour(lon1,lat1,bb,15);
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m_coast('patch',[0 0 0])
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hold on& @$ t) c) H! T! H l
6 Q% R- }( [( |9 p) i1 E7 ]dd=cc;- V9 w! d+ q; z7 K+ [
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dd(find(dd>340|dd<20))=NaN;2 p4 X+ I( K3 @/ q% x, ^; X
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[c,h]=m_contour(lon1,lat1,dd,[30:30:330]);+ r1 u/ B" R ?0 F# Y. N5 C
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clabel(c,h,'FontSize',10, 'Color','r','Rotation',0);& G, O- }. F+ Q3 g
. ?& Y% R% d- a' Q" }, m2 hhold on
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, p* k6 e( K, [0 w* Xa2=find(cc>340&cc<360);
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cc(a2)=cc(a2)-360;
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[c,h]=m_contour(lon1,lat1,cc,[0 0]);
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3 Q5 ~1 i$ x/ M2 B1 l% K7 z/ e2 P) @clabel(c,h,'FontSize',10, 'Color','r','Rotation',0);( @; ?& G1 G e7 z
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m_gshhs_h('save','topodata');) q, R4 |$ I |6 f* \ r! k1 [7 `& C
# v L" l' R$ K' r }/ o' D0 Dm_usercoast('topodata','patch',[0 0 0],'linewidth',1.2);
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, c: z8 f$ o- T* M3 o# Lm_grid('box','fancy')$ F' r& ^2 t0 x ^( Q- r; c/ ?
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xlabel('Longitude')$ E2 ]3 G% T' K3 X! m/ k
8 x5 ]0 M9 m$ i _ylabel('Latitude')
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title('等振幅线与同潮时线')+ ?# C; T+ }: f- A
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7 E; f) J) i: N7 g. D$ m从图中我们可以看到渤黄海的4个无潮点。! D( j& s: b4 w7 ?3 @% {
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