matlab繪圖指令大全

繪圖指令1二維曲線圖1.1繪制折線圖plot指令圖例Y=[1,3,6,5,9,0,2];Plot(Y);X=0:pi/10:pi*2;Y=sin(X);plot(X,Y);X=0:pi/10:pi*2;Y1=sin(X);Y2=cos(X);Plot(X,Y1,X,Y2);調(diào)整坐標范圍：axisaxis([0,300,0,2])1.2繪制自定義函數(shù)functionDraWCircle(Point,Radius)Holdont=0:pi/10:2*pi;X=Point(1)+Radius*cos(t);y=Point(2)+Radius*sin(t);Plot(X,y);DraWCircle([1010],1)DraWCircle([2010],2)DraWCircle([1020],3)繪制符號函數(shù)-顯函數(shù)ezplot('sin(x)',[0,2*pi])隱函數(shù)ezplot('x^2+y^2T0',[-5,5],[-6,6])參數(shù)方程ezplot('cos(t)^3','sin(t)^3',[0,2*pi])1.4繪制自定義函數(shù)functiony=myf1(x)y=sqrt(100-χ^2);fplot('myf1',[-1515])fplot('[sin(x)Cos(X)myf1(x)]',[-1515])1.5圖形修飾設置顏色ymcrgbwk設置線型-:-.--設置標記.ox+*指令圖例Y=[1,3,6,5,9,0,2];plot(Y,'r-+');X=0:pi/10:pi*2;Y=sin(X);plot(X,Y,'b-.');X=0:pi/10:pi*2;Y1=sin(X);Y2=cos(X);plot(X,Y1,'r+-',.X,Y2,'b-*')； 在指定坐標處，書寫文字:'曲線比較)；s=['曲線cos'；'曲線sin'];text(x,y,s);1.6更多類型的二維圖指令圖例bar直方圖X=0:pi/10:2*pi;Y=sin(X);bar(X,Y);polar極坐標圖T=0:pi/10:4*pi;R=T;polar(T,R);誤差棒棒圖X=0:pi/10:2*pi;Y=Sin(X);errorbar(X,Y,e);火柴桿圖X=0:pi/10:2*pi;Y=sin(X);stem(X,Y);Stairs樓梯圖X=0:pi/10:2*pi;Y=sin(X);StairS(X,Y);多邊形填色圖X=[1,2,3,4,5];Y=[3,5,2,1,6];fill(X,Y,'r');holdon;%保持圖形plot(X,Y,'o')1.2.7數(shù)值函數(shù)的二維圖可用于繪圖，更可用于采樣取點。%■繪圖[X,Y]=;%返回點坐標fplot('cos(x)',[-pi,pi],'r—+');觀察點的位置控制采樣點的密度^5)fplot('cos(x)',[—pi,pi],'r—+',0.1);可繪制系統(tǒng)函數(shù)，也可繪制自定義函數(shù)的圖形。2三維曲線圖1三維曲線plot3指令圖例X=0:Y=Sin(X);Z=Cos(X);plot3(X,Y,Z,'r');XY=sin(X);Z1=cos(X);Z2=2*cos(X);plot3(X,Y,Z1,'r',X,Y,Z2,'b');2.2三維面填色fill3指令圖例X1=[2,2,1];Y1=[0,2,1];Z1=[0,0,1];fill3(X1,Y1,Z1,'r');holdon;X2=[1,0,0];Y2=[1,2,0];Z2=[1,0,0];fill3(X2,Y2,Z2,'r');X3=[0,2,1];Y3=[2,2,1];Z3=[0,0,1];fill3(X3,Y3,Z3,'b');text(1,1,1,'1,1,1');3曲面圖形x=1:2:7y=2:2:6[X,Y]=meshgrid(x,y)X=13 5 7Y=222213574444135766663.2三維網(wǎng)格mesh、meshc、meshz用途：數(shù)據(jù)場的觀察分析命令^例隨機數(shù)據(jù)的網(wǎng)格Z=rand(5,5);mesh(Z);%設置顏色colormap([1,0,0]);自定義函數(shù)的網(wǎng)格x=[-4:1:4];y=[-5:1:5];[X,Y]=meshgrid(x,y);Z=X.^2+Y.^2;mesh(X,Y,Z);消影開關：hiddenon/hiddenoff

利用peaks(50)作為模擬數(shù)據(jù)矩陣；命令圖例帶等高線的網(wǎng)格Z=PeakS(50);meshc(Z);Z=PeakS(50);meshc(Z);colormap([1,0,0]);帶基準面的網(wǎng)格Z=PeakS(50);meshz(Z);剪孔Z=PeakS(50);Z(30:45,15:30)=NaN*ones(16,16);meshc(Z);3.3著色表面圖surf、Surfc命令圖例表面著色的網(wǎng)格Z=Peaks(50);surf(Z);自定義函數(shù)的著色網(wǎng)格x=-2:2;y=-2:2;[X,Y]=meshgrid(x,y);Z=sqrt(X.^2+Y.^2);surfc(X,Y,Z);3.4二元函數(shù)的偽彩色圖Pcolor用途：污染濃度場的觀察分析。命令

Z=Peaks(50);Pcolor(Z);

colorbar('hor');

colorbar('vec');-^3.5等高線contour圖例不僅可用于繪圖，更可以用以求截面數(shù)據(jù)。圖例J以矩陣下標為x、y分量的等高線Z=Peaks(50);C=contour(Z);colormap([1,0,0]);C：保存了全部等高線上的點坐標。均分n條等高線，并標一注之Z=Peaks(50);n=5;C=Contour(Z,n);colormap([1,0,0]);clabel(C);在指定高度繪制等高線Z=Peaks(50);V=-10:2:10;C=contour(Z,V);colormap([1,0,0]);clabel(C);完整圖形數(shù)據(jù)的等高線x=-2:2;y=-2:2;[X,Y]=meshgrid(x,y);Z=sqrt(X.^2+Y.^2);n=5;C=Contour(X,Y,Z,n);三維等高線[X,Y]=meshgrid(x,y);Z=sqrt(X.^2+Y.^2);n=10;C=Contour3(X,Y,Z,n);3.6矢量場圖quiver用于挖掘數(shù)據(jù)變化趨勢。命令圖例構造起伏跌宕的曲面[X,Y]=meshgrid(x,y);Z=X.*exp(-X.^2-Y.^2)mesh(X,Y,Z);xlabel('X軸')；ylabel('Y軸')；Colormap([1,0,0]);計算曲面的梯度[px,py]二gradient(Z,0.2,0.2);繪制矢量場圖quiver(x,y,px,py);~~視角控制VieW視點控制方式及效果：view([111])view([211])viewview([111])view([121])viewview([111])view([112])view方位角、仰角控制方式及效果：缺省為（，30）。view(,30)view(-1,30)viewview(,30)view(,45)VT控制SUbplotSUbplot(2,1,1);mesh(X,Y,Z);SUbplot(2,1,2);quiver(x,y,px,py);、播放動畫[x,y,z]=peakS(30);SUrf(x,y,z)%制作動畫m=moviein(5);%5幀畫面的動畫變量fori=1:5vieW([11i])%不斷調(diào)整視點m(:,i)=getframe;%將當前畫面作為幀保存到序列中end%播放動畫movie(m,2,1); %每隔1秒播放1幀，循環(huán)播放2次Mx=0:400:5600;y=0:400:4800;z=[370470550600670690670620580450400300100150250;510620730800850870850780720650500200300350320650760880970102010501020830900700300500550480350740880108011301250128012301040900500700780750650550830980118013201450142014001300700900850840380780750880106012301390150015001400900110010609508709009309509101090127015001200110013501450120011501010880100010501100;9501190137015001200110015501600155013801070900105011501200;143014301460150015501600155016001600160015501500150015501550;14201430145014801500155015101430130012009808507505505001380141014301450147013201280120010809407806204603703501370139014101430144011401110105095082069054038030021013501370139014001410960940880800690570430290210150];meshz(x,y,z)xlabel('X'),ylabel('Y'),zlabel('Z')pausefigure(2);Contour(X,y,z)pausefigure(3);Contour3(x,y,z)mesh(dem)4數(shù)據(jù)特征的圖形展示以Pdf結尾的函數(shù)，計算概率密度或概率；以Cdf結尾的函數(shù)，計算累計分布函數(shù)。