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H=ezmesh('x','y','sin(x).*cos(y)') Hparent=get(get(H,'Parent'),'Parent')

%方法1： t=0:0.1:20*pi; plot3(t,sin(t),cos(t)) xlabel('t'),ylabel('sin(t)'),zlabel('cos(t)');title('plot3'); %方法2： ezplot3('t','sin(t)','cos(t)')% 0 ≤ t ≤2*pi xlabel('t'),ylabel('sin(t)'),zlabel('

x=[2 -2 1 3 -1];y=[2 2 -2 1 -3];compass(x,y); title('Example of a Compass Plot');grid on

t=0:0.1:20*pi;plot3(sin(t),cos(t), sin(t).*cos(t)) xlabel('x');ylabel('y');zlabel('z'); title('plot3');

t=-pi:pi/200:pi; comet(t,tan(sin(t))-sin(tan(t)))

[x,y]=meshgrid(-2:0.1:2,-1:0.1:1);z=sin(x).*(1-cos(y)) surf(z);colormap([1 0 1]); %绘制三维曲面并设置色图为洋红色 mesh(z);colormap(autumn);

x = 1:10;y = sin(x);e = std(y)*ones(size(x));errorbar(x,y,e)

H=dialog('BackingStore','off', 'ButtonDownFcn' ,'if isempty(allchild(gcbf)),close(gcbf), end','MenuBar','none','Visible','on')

%plot the function sin(x) for 0

A=[2 2 -1 1;4 3 -1 2;8 3 -3 4;3 3 -2 -2] ; norm(A,1)%求A的1—范数 norm(A) %求A的2—范数 norm(A,inf) %求A的 范数