.
1-32是:图形应用篇
33-66是:界面设计篇
67-84是:图形处理篇
85-100是:数值分析篇
实例1:三角函数曲线(1)
function shili01
h0=figure('toolbar','none',...
'position',[198 56 350 300],... 'name','实例01'); h1=axes('parent',h0,... 'visible','off'); x=-pi:0.05:pi; y=sin(x); plot(x,y);
xlabel('自变量X'); ylabel('函数值Y'); title('SIN( )函数曲线'); grid on
实例2:三角函数曲线(2)
function shili02
h0=figure('toolbar','none',...
'position',[200 150 450 350],... 'name','实例02'); x=-pi:0.05:pi; y=sin(x)+cos(x);
plot(x,y,'-*r','linewidth',1); grid on
xlabel('自变量X'); ylabel('函数值Y'); title('三角函数'); 实例3:图形的叠加
function shili03
h0=figure('toolbar','none',...
.
.
'position',[200 150 450 350],... 'name','实例03'); x=-pi:0.05:pi; y1=sin(x); y2=cos(x); plot(x,y1,... '-*r',... x,y2,... '--og'); grid on
xlabel('自变量X'); ylabel('函数值Y'); title('三角函数');
实例4:双y轴图形的绘制
function shili04
h0=figure('toolbar','none',...
'position',[200 150 450 250],... 'name','实例04'); x=0:900;a=1000;b=0.005; y1=2*x;
y2=cos(b*x);
[haxes,hline1,hline2]=plotyy(x,y1,x,y2,'semilogy','plot'); axes(haxes(1))
ylabel('semilog plot'); axes(haxes(2))
ylabel('linear plot');
实例5:单个轴窗口显示多个图形
function shili05
h0=figure('toolbar','none',...
'position',[200 150 450 250],... 'name','实例05'); t=0:pi/10:2*pi; [x,y]=meshgrid(t); subplot(2,2,1) plot(sin(t),cos(t)) axis equal
subplot(2,2,2) z=sin(x)-cos(y); plot(t,z)
axis([0 2*pi -2 2])
.
.
subplot(2,2,3) h=sin(x)+cos(y); plot(t,h)
axis([0 2*pi -2 2])
subplot(2,2,4)
g=(sin(x).^2)-(cos(y).^2); plot(t,g)
axis([0 2*pi -1 1]) 实例6:图形标注
function shili06
h0=figure('toolbar','none',...
'position',[200 150 450 400],... 'name','实例06'); t=0:pi/10:2*pi; h=plot(t,sin(t));
xlabel('t=0到2\\pi','fontsize',16); ylabel('sin(t)','fontsize',16);
title('\\it{从 0to2\\pi 的正弦曲线}','fontsize',16) x=get(h,'xdata'); y=get(h,'ydata');
imin=find(min(y)==y); imax=find(max(y)==y); text(x(imin),y(imin),...
['\\leftarrow最小值=',num2str(y(imin))],... 'fontsize',16) text(x(imax),y(imax),...
['\\leftarrow最大值=',num2str(y(imax))],... 'fontsize',16)
实例7:条形图形
function shili07
h0=figure('toolbar','none',...
'position',[200 150 450 350],... 'name','实例07');
tiao1=[562 548 224 545 41 445 745 512]; tiao2=[47 48 57 58 54 52 65 48]; t=0:7;
bar(t,tiao1) xlabel('X轴');
ylabel('TIAO1值'); h1=gca;
.