Matlab圖形繪制經(jīng)典案例

1、1、三維曲線t=0:pi/50:10*pi;plot3(sin(2*t),cos(2*t),t)axissquaregridon圖形繪制經(jīng)典案例實(shí)用文檔實(shí)用文檔2、一窗口多圖形t=-2*pi:0.01:2*pi;subplot(3,2,1)plot(t,sin(t)subplot(3,2,2)plot(t,cos(t)subplot(3,2,3)plot(t,tan(t)axis(-pipi-100100)subplot(3,2,4)plot(t,cot(t)axis(-pipi-100100)subplot(3,2,5)plot(t,atan(t)subplot(3,2,6)plot(t,a

2、cot(t)100-100-100100-100-100圖形樣式、標(biāo)注、題字（也可以利用菜單直接Insert）x=0:pi/20:2*pi;plot(x,sin(x)/b-.)holdonplot(x,cos(x)/r-)holdonplot(x,sin(x)-l/g:)holdonplot(x,cos(x)-l)xlabelCx);xlabel(5x軸)；ylabel(5y軸)；title(圖形樣式、標(biāo)注等力text(pi,sin(pi)/x=pi);legend(,sin(x)7cos(x)7sin(x)-l,/cos(x)-l,);xl,yl=ginput(1)%利用鼠標(biāo)定位查找線上某點(diǎn)

3、的值xl=2.0893yi=-0.5000gtext(x=2.5)%鼠標(biāo)定位放置所需的值在線上-0.5圖形樣式、標(biāo)注等*二Ux=2.5-0.5圖形樣式、標(biāo)注等*二Ux=2.5sin(x)cas(x)sin(x)-1匚網(wǎng)乂14、fplot(,sin(x),cos(x),sqrt(x)-l,02*pi)M文件：myfun.m內(nèi)容如下：functiony=myfun(x)y(:,l)=sin(x);y(：,2)=cos(x);y(:,3)=x(l/2)-l;再運(yùn)行：fplotCmyfunO2*pi)同樣可以得到下圖x,y=fplot(sin,02*pi);x1,y1=fplot(cos,02*pi)

4、;plot(x,y,-r,x1,y1,-.k)legend(y=sinx,y=cosx)x=-2:0.2:2;y=exp(x)-sin(x);plot(x,y,-or,linewidth,2)7、畫出y1=6(sinx-cosx),y2=x2Ax-1的圖形x=-3:0.1:3;y1=6*(sin(x)-cos(x);y2=x.*2.Ax-1;plot(x,y1,-r,x,y2,-.k,linewidth,2)8、繪制心形圖r=2(1-cos)的極坐標(biāo)圖形theta=0:0.01:2*pi;polar(theta,2*(1-cos(theta),-k)polar(theta,2*(1-cos(t

5、heta),-or)9、用雙軸對(duì)數(shù)坐標(biāo)繪制y=x*3Ax-30的圖形x=logspace(-3,3);y=x.*3.Ax-30;loglog(y,-or,linewidth,2);gridon10、繪制數(shù)據(jù)向量的單軸對(duì)數(shù)坐標(biāo)圖形x=1:50;y=1:50;semilogx(x,y,-*b)%繪制橫軸為對(duì)數(shù)坐標(biāo)%縱軸為線性坐標(biāo)gridonsemilogy(x,y,-*b)%繪制縱軸為對(duì)數(shù)坐標(biāo)%橫軸為線性坐標(biāo)gridon11、繪制矩陣的條形圖，并求出句柄屬性值向量。A=123;456;789;h=bar(A)h=171.0031174.0026176.002612、繪制矩陣的水平條形圖。2-221

6、x=1:3;barh(x,y)13、繪制矩陣的面積圖。y=32-221;-13372;-75593;area(y)14、繪制矩陣的二維餅圖x=123;456;789;explode=010101010;pie(x,explode)15、自行確定數(shù)據(jù)向量，繪制其散點(diǎn)圖。1,11,116、自行確定數(shù)據(jù)，繪制其柱形圖。x=-2:0.01:4;y=randn(1131,1);hist(y,x)17、繪制y=sinx在。2*pi上的誤差圖。x=0:pi/20:2*pi;y=sin(x);E=std(y)*ones(size(x);%條形控制errorbar(x,y,E)18、繪制火柴桿圖。x=11.52

7、;33.54;55.56;y=432;489;273;stem(x,y,fill)19、繪制羽列圖。U=-90:5:90*pi/180;%建立等間距數(shù)據(jù)V=2*ones(size(U);%根據(jù)U建立數(shù)據(jù)U,V=pol2cart(U,V);轉(zhuǎn)換數(shù)據(jù)為直角坐標(biāo)形式20、同一窗口繪制和在0,30上的圖形。x=0:0.01:30;y1=50*exp(-0.05*x).*sin(x);y2=0.5*exp(-0.5*x).*cos(x);plotyy(x,y1,x,y2,plot)%plotyy(x,y1,x,y2,plot)表示:用左側(cè)y標(biāo)度繪制(x,y1)A=magic(8);contour(A)%

8、繪制等值線圖stairs(A)%繪制階梯圖22、繪制玫瑰花圖。theta=rand(1,200)*2*pi;rose(theta,25)23、繪制羅盤圖。x=rand(20,1);y=randn(20,1);compass(x,y)24、繪制函數(shù)的梯度場(chǎng)矢量圖。x,y=meshgrid(-2:0.1:2);%建立柵格點(diǎn)數(shù)據(jù)向量z=3.*x.*y*exp(-x.A2-yC2)-1;%計(jì)算函數(shù)值向量u,v=gradient(z,0.2,0.2);%計(jì)算梯度值向量quiver(x,y,u,v,2)%繪制梯度場(chǎng)矢量圖25、給定向量x,y生成網(wǎng)格矩陣。x=1234;y=1011121314;U,V=me

9、shgrid(x,y)II=12341234123412341234V=101010101111111112121212131313131414141426、生成一個(gè)5階高斯分布矩陣，并給出相應(yīng)的x,y向量矩陣。X,Y,Z=peaks(5)X=-3.0000-1.500001.50003.0000-3.0000-1.500001.50003.0000-3.0000-1.500001.50003.0000-3.0000-1.500001.50003.0000-3.0000-1.500001.50003.0000Y=-3.0000-3.0000-3.0000-3.0000-3.0000-1.500

10、0-1.5000-1.5000-1.5000-1.5000000001.50001.50001.50001.50001.50003.00003.00003.00003.00003.0000Z=0.00010.0042-0.2450-0.0298-0.0000-0.00050.3265-5.6803-0.44050.0036-0.0365-2.77360.98103.26950.0331-0.00310.47847.99661.18530.00440.00000.03120.29990.03200.000027、在-4=x=4,-4=yx,y=meshgrid(-3:0.125:3);z=pea

11、ks(x,y);meshz(x,y,z)29、用surf繪制高斯分布函數(shù)的曲面圖。x,y=meshgrid(-3:0.125:3);z=peaks(x,y);surf(x,y,z)30、繪制曲線圖。t=0:pi/200:10*pi;實(shí)用文檔實(shí)用文檔x=2*cos(t)；y=3*sin(t)；z=t.A2；Plot3(xz)2-2實(shí)用文檔實(shí)用文檔31、利用peaks函數(shù)產(chǎn)生的數(shù)據(jù)繪制其帶形圖。x,y=meshgrid(-2*pi:pi/5:2*pi,-2:l/5:2);z=peaks(x,y);ribbon(y,z)實(shí)用文檔實(shí)用文檔32、繪制三維餅圖。A=123;456;789;ex=100;400;080;pie3(A,ex)20%11%33、在各種style參數(shù)的條件下繪制矩陣的三維條形圖。z=123;456;789;bar3(z,detached)title(bar3函數(shù)以d