内容简介作者简介 - 科学与工程计算系

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function [DX1,DX2,DP]=portraitzzy(x1,x2,h) % PORTRAITZZY % % opts=simset('solver','ode5','fixedstep',h); % n=length(x1); X1=zeros(n,n);X2=X1; for ii=1:n; for jj=1:n; opts=simset(opts,'initialstate',[x1(ii),x2(jj)]);% [t,x,y]=sim('exm08634_1',h,opts); % dx1=x(2,1)-x1(ii); dx2=x(2,2)-x2(jj); L=sqrt(dx1^2+dx2^2);。 Z(jj,ii)=L; if L>1.e-10 DX1(jj,ii)=dx1/L;DX2(jj,ii)=dx2/L; % end end end DP=Z/h; (5) h=0.01; x1=-2.5:0.25:2.5;x2=x1; k=3.5; [X1,X2]=portraitzzy(x1,x2,h); quiver(x1,x2,k*X1,k*X2,0) xlabel('x1'),ylabel('x2') x2 3 2 1 0 -1 -2 -3 -3 -2 -1 0 x1 图 8.6.5.1-1-2 1 2 3 (6) surfc(x1,x2,Z),view([18,32]),xlabel('x1'),ylabel('x2') 27
(6) xa=trim('exm080634_1',[-1,-2]') xb=trim('exm080634_1',[1,2]') xa = -0.8944 -1.7889 xb = 0.8944 1.7889 图 8.6.5.1-1-3 (7) Axa=linmod2('exm080634_1',xa);eig_Axa=(eig(Axa))' Axb=linmod2('exm080634_1',xb);eig_Axb=(eig(Axb))' eig_Axa = -1.3944 - 2.6457i -1.3944 + 2.6457i eig_Axb = 3.4110 -2.6222 8.6.5.2 仿真模型和优化指令的协调【例 8.6.5.2-1】本例演示:(A)如何用 SIMULINK 模块计算性能函数。(B)SIMULINK 方块模型、目标函数和优化程序之间的协调和参数传递。(C)跨空间交换数据、跨空间计算表达式。 (1) (2) (3) [itae.m] function ss=itae(aa) 图 8.6.5.2-1-1 28
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内容简介本书由纸质媒
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环境下的 MATLAB3.0 经汉化而
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数值计算基础软件库变化,
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材或自学用书,又能当作实
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第一章基础准备及入门本
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⎡1 【例 1.3.2-2】简单矩阵
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t=0:pi/20:2*pi;x=R*sin(t);y=R*cos(t
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1.5.2 历史指令行的再运行
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1.7.1 Workspace Browser 工作空
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一存取数据文件的指令操
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一 “纯文本”帮助【例 1.
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三 Search 搜索窗图 1.10-2 【
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and('state',0) x=rand(1,5) x = 0.95
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上进行)。 (1) Num=[1,0,0,0,1;0,
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P=poly(R) PR=real(P) PPR=poly2str(P
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2.9.2 数组操作函数【例 2.9
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AB_r = 1 4 7 0 0 222 2 5 8 0 0 222
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2.11.1 高维数组的创建【例
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ans(:,:,3) = 14 16 18 13 15 17 flip
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A_1 = 1 7 13 2 8 14 size(B) ans = 2
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(3) b_c1=b.*c b_c2=b'*c b_c3=b*c' b
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L4 = 0 0 1 1 0 0 0 【例 2.13.2-2
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a_s 1x2 16 double array ans 1x4 8 c
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3.1.3.3 转换函数产生数码字
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0.9501 0.4860 0.2311 0 0.6068 0 3.1
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f2=R_A_C{1,3} class(f2) f2 = sin(-3
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ans = 31.2000 30.4000 31.6000 28.70
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poly2str(FC{1},'s') FC = [1x4 doubl
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1x5 struct array with fields: f % d
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[1x1 struct] [] [1x1 struct] [1x5 d
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4.2.1 LU 分解、行列式和逆 4
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T_full = 0.2200 T_part = 3.1300 d =
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【例 4.3.4-3】sin 的数组运
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Dx = 3 3 3 3 3 3 Dx_2 = 1 1 1 1 1 1
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[tt,yy]=ginput(5);zoom off tt tt =
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4.7 函数极值点 4.7.1 一元函
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g = sum(W.*feval(fun,t))*(b-a)/2;
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In D:\MATLAB6p5\work\double_int.m a
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set(gca,'Xtick',[0,3,11,14]),grid
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4.9.3.1 泊松分布(Poisson distri
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chi2(n)=sum((y-ye).^2)/dy/dy; end Q
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16 14 12 10 8 6 4 2 y=3*exp(-0.4*x)
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4.11.1 一维插值【例 4.11.1-1
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1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0
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(1) [fzzysym.m] function [A_sym,B_s
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图 4.13-1 【例 4.13.2.3-3】运
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w(Tow,1)=ones(length(Tow),1); % plo
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otherwise error(['Unknown flag '''
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(1) [DYDt4.m] function varargout=DY
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2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 插
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SM2=sparse(2:n,1:n-1,ones(1,n-1),n,
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第五章符号计算符号计算
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Ms = [ a, b] [ c, d] (2) SizeMn=siz
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2 ⎡ 3 x + 3 3x ⎤ ⎢ + ⎥ 【
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(3) f2=subs(f,{a,x},{2,sym(pi/3)})
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x2 ⎡ x ⎤ 1e ⎢ ⎥ 【例 5.3.
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yt = (-1+exp(1-t)*t)*Heaviside(t-1)
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D0=subs(Delta,n,0); % D15=subs(Delt
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5.6.3 微分方程符号解示例
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2 2 6 2 4 4 2 6 x~ + y - 1/6 x~ - 1
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第六章数据和函数的可视
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t=(0:pi/50:2*pi)';k=0.4:0.1:1;Y=cos
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% dx=0.5;dy=1;T=[1,0,dx;0,1,dy;0,0,
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y → 1.2843 1.05 1 0.95 6.2.4 图
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200 100 6.2.5.3 多子图 0 0 2 4 6
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6.3.3 透视、镂空和裁切 40 3
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6.4 特殊图形和高维可视化
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subplot(1,2,1),bar3(x',Y',1) xlabel
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6.4.1.5 射线图 compass 和羽毛
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6.4.1.8 离散杆图 stem , stem3
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1 0.5 0 -0.5 10 5 0 -5 -10 -10 图
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shading faceted,colorbar('horiz'),b
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图 6.4-19 % clf;v1=min(min(min(V))
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6.5.1 视点控制和图形的旋
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6.5.3 照明和材质处理 6.5.3.1
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图 6.5-10 【例 6.5.4.3-3】本
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alpha('interp') 6.6 图象 6.6.1
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6.6.3 8 位和 16 位图象【例
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6.7.2 二维图形的交互编辑
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图 6.8-2 【例 6.8.2-2】使用
Page 161 and 162: 第七章 M 文件和面向对象
Page 163 and 164: end; i,a(i), i = 21 ans = 10946 7.3
Page 165 and 166: 7.4.1 M 脚本文件 7.4.2 M 函数
Page 167 and 168: subplot(1,3,2),exm07052_1(r1,r2,'Ma
Page 169 and 170: Your variables are: t theta y 【
Page 171 and 172: 2.6279 7.7 函数句柄 7.7.1 函
Page 173 and 174: otherwise error('输入宗量只能
Page 175 and 176: 7.9.2.2 调试器应用示例图 7
Page 177 and 178: (7) 图 7.9-4 图 7.9-5 (9) randn('
Page 179 and 180: 7.10 面向对象编程 7.10.1 概
Page 181 and 182: [m,n]=size(q); vname=inputname(1);
Page 183 and 184: assignin('caller',inputname(1),q1);
Page 185 and 186: s.name=['(' class(v) ')']; end Q=qu
Page 187 and 188: 8.1.2 SIMULINK 入门图 8.1.1-1
Page 189 and 190: 8.1.3 SIMULINK 库浏览器界面 8
Page 191 and 192: (a)缺省状态 (7)模块名的操
Page 193 and 194: 2 ⎧ t 0 ≤ t < T ⎪ 2 u( t) =
Page 195 and 196: 8.3.1.1 积分模块的功用【
Page 197 and 198: 8.3.2 非线性系统 8.3.2.1 建
Page 199 and 200: (3) (4) 图 8.3.2.2-1-4 8.4 子系
Page 201 and 202: (3) (4) (5) (6) (7) 图 8.4.2.2-1-1
Page 203 and 204: 【例 8.4.3.1-1】利用使能原
Page 205 and 206: (2) (3) (4) 图 8.4.3.4-1-1 图 8.4
Page 207 and 208: (2) 8.5.2 多速率离散时间系
Page 209 and 210: 8.6 SIMULINK 的分析工具 8.6.1
Page 211: 2.0000 -1.0000 (5) eA=eig(A)',eA1=e
Page 215 and 216: 3 3.144 3.138 4 4.626 4.591 5 7.155
Page 217 and 218: 8.7.3.1 代数环的形成【例 8
Page 219 and 220: % % switch flag, case 0, [sys,x0,st
Page 221 and 222: (6) 图 8.8.3.2-5 图 8.8.3.2-6 图
Page 223 and 224: 第九章句柄图形与第 6 章
Page 225 and 226: 9.3.3 对象属性的缺省设置
Page 227 and 228: 9.6.3 轴刻度的属性控制 9.6.
Page 229 and 230: line(0.24,0.23,'Marker','^','Marker
Page 231 and 232: light('Position',[0 -1.5 0],'color'
Page 233 and 234: 9.7.6 surface 指令衍生不同曲
Page 235 and 236: Y=5*[0 0 0 0;0 1 1 0;1 1 1 1;1 0 0
Page 237 and 238: end (2) (3) 15
Page 239 and 240: 图 10.1-1 (2) h_text=uicontrol(h_f
Page 241 and 242: 10.2.1 设计原则 (1)简单性 (2
Page 243 and 244: 图 10.3-5 (4) uimenu('Label','Test
Page 245 and 246: 'callback',[... 'grid on,',... 'set
Page 247 and 248: 10.3.4 现场菜单的制作图 10
Page 249 and 250: 图 10.4-1 10.4.3.2 静态文本框
Page 251 and 252: 【例 10.4.3.3-1】目标:制作
Page 253 and 254: [calledit2.m] function calledit2( )
Page 255 and 256: 10.6.1 界面设计工具的结构
Page 257 and 258: (1)步骤一: (2)步骤二: (3)步
Page 259 and 260: guidata(fig, handles); set(handles.
Page 261 and 262: 第十一章 MATLAB 编译器几
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图 11.2-2 11.2.3 为产生独立
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11.3.2 由 M 文件创建外部应
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mccstartup not found. exm3* not fou
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够识别出 nargin、nargout、for
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11.6.3.3 由包含绘图指令的 M
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disp('矩阵 A 的奇异值 = ') el
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1.4 1.2 1 0.8 0.6 0.4 0.2 0 -0.2 -0
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图 11.6-6 17
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12.1.3 C 语言 MEX 文件源程序
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* 其他 C 源码……*/ } (2) #in
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} input_buf0=(char *)mxCalloc(bufle
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mex exm120153_2.cpp (3) exm120153_2
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printf("Error reopening file %s\n",
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GlobalDouble,LocalDouble,LocalStrin
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#define BUFSIZE 512 int main() { En
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图 12.3-3 12.3.3 利用 VC++ 6.0
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(2) #include "engine.h" #include "m
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} (3) (4) (5) cout
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invoke(excel, 'Quit'); 图 12.4-1 1
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(2) 图 12.4-5 图 12.4-6 24
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Private Sub CommandButton1_Click( )
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(4) (5) Private Sub CommandButton1_
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(1) 图 12.5-3 图 12.5-4 30
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(3) (4) TextInput.LinkMode = vbLink
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(3) 图 12.5-11 34 图 12.5-10
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36 图 12.5-14
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13.2.1 从 Word 中启动 Notebook
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plot(t,y,'k','LineWidth',4) % hold
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13.3.3.3 整个 M-book 文件的运
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13.4.1 在 M-book 中实现计算
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(2) (3) syms t s a w ft=exp(-a*t)*s
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B.1 光盘文件的结构附录 B:
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失彼,而造成仿真失败。本
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参考文献 [1] M.L.Abell, J.P.
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