fnplt.m

演示matlab曲线拟和与插直的基本方法

% FNPLT   娭悢偺僾儘僢僩
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% FNPLT(F) 偼丄F 偵偁傞娭悢傪婎杮嬫娫偱僾儘僢僩偟傑偡丅
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% FNPLT(F,SYMBOL,INTERV,LINEWIDTH,JUMPS) 偼丄巜掕偟偨 INTERV = [a,b] 
% (僨僼僅儖僩偼婎杮嬫娫乯偵偍偗傞娭悢 F 傪丄巜掕偟偨 SYMBOL乮僨僼僅儖僩偼 
% '-')偲 LINEWIDTH (僨僼僅儖僩偼1)傪梡偄偰僾儘僢僩偟傑偡丅偝傜偵丄JUMPS 偑
% 'j' 偱偼偠傑傞暥帤楍偱偁傞応崌偺傒丄旘傃傪幚嵺偺旘傃偲偟偰帵偡偨傔偵丄
% NaN 傪巊梡偟偰僾儘僢僩偟傑偡丅
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% 4偮偺僆僾僔儑儞堷悢傪丄擟堄偺弴彉偱暲傋傞偙偲偑偱偒傑偡丅INTERV 偼丄
% [1 2] 偺戝偒偝偱丄SYMBOL 偲 JUMPS 偼暥帤楍偱丄LINEWIDTH 偼僗僇儔偱偡丅
% 嬻偺僆僾僔儑儞堷悢偼丄偄偢傟傕柍帇偝傟傑偡丅
%
% F 偵偁傞娭悢偑2梫慺偺儀僋僩儖抣偺応崌丄暯柺嬋慄偑僾儘僢僩偝傟傑偡丅
% F 偵偁傞娭悢偑丄d>2 偱偁傞d梫慺偺儀僋僩儖抣偺応崌丄F 偺嵟弶偺3惉暘偵
% 傛偭偰梌偊傜傟傞嬻娫嬋慄偑僾儘僢僩偝傟傑偡丅
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% 娭悢偑懡曄悢偺応崌丄晅壛揑側曄悢偵偮偄偰偼婎杮嬫娫偺拞娫揰傪巊偭偰丄
% 2曄悢娭悢偲偟偰僾儘僢僩偝傟傑偡丅
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% POINTS = FNPLT(F,...) 偼丄僾儘僢僩偼偟傑偣傫偑丄2師尦偺揰傑偨偼3師尦偺
% 揰偺楍 F(T) 傪弌椡偟傑偡丅
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% [POINTS, T] = FNPLT(F,...) 偼丄儀僋僩儖抣 F 偵懳偟偰丄懳墳偡傞僷儔儊乕僞
% 抣偺儀僋僩儖 T 傕弌椡偟傑偡丅
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% 椺戣:
%      x=linspace(0,2*pi,21); f = spapi(4,x,sin(x));
%      fnplt(f,'r',3,[1 3])
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% 偼丄愒怓偱慄偺暆傪3偲偟偰丄嬫娫 [1 .. 3] 偱偺 f 偵偁傞娭悢偺僌儔僼傪
% 僾儘僢僩偟傑偡丅


%   Copyright 1987-2003 C. de Boor and The MathWorks, Inc.