发布时间 : 星期三 文章Matlab数据可视化（命令与示例）更新完毕开始阅读2296b434647d27284b73513f
【二维图形绘制】 ........................................................................................................................................ 2
1. plot(Y) ................................................................................................................................................ 2 2. plot(X,Y) ............................................................................................................................................ 2 3. plot(X,Y,LineSpec) ............................................................................................................................ 2 4. ezplot(f) .............................................................................................................................................. 3 5. ezplot(f,[min,max]) ............................................................................................................................. 3 6. ezplot(f,[xmin, xmax, ymin, ymax]) ................................................................................................... 4 【三维图形绘制】 ........................................................................................................................................ 4
1. plot3(X,Y,Z) / plot3(X,Y,Z,LineSpec) .............................................................................................. 4 2. [X, Y] = meshgrid(x,y) ....................................................................................................................... 5 3. mesh/surf ............................................................................................................................................ 5 4. ezplot3(x,y,z) / ezplot(x,y,z,[tmin, tmax]) .......................................................................................... 6 5. ezmesh(f) / ezsurf(f) ........................................................................................................................... 6 6. ezmeshc / ezsurfc ................................................................................................................................ 7 【特殊图形绘制】 ........................................................................................................................................ 7
1. 二维条形图：bar(x,y) / barh(x,y) ............................................................................................... 7 2. 三维条形图bar3 / bar3h ............................................................................................................... 8 3. 填充图：area(Y) / area(X,Y) ....................................................................................................... 8 4. 饼图：pie(x) / pie3(x) .................................................................................................................... 9 5. 直方图：hist(y)................................................................................................................................. 9 6. 离散数据图形：stem(x,y) / stairs(x,y) / stem3(x,y,z) ...............................................................10 7. 等值线图：contour(x,y,z,n) .........................................................................................................10 8.等值线图（符号函数）： ezcontour(f, domain,n) / ezcontourf(f,domain,n) ...................11 9. 矢量图：quiver(x,y,u,v) ................................................................................................................11
【二维图形绘制】
1. plot(Y)
Y为向量，实数矩阵
在命令窗口输入下面命令： x = [-3:0.2:3];
y = 1/sqrt(2*pi)*exp(-1/2*x.^2); plot(y) 0.40.350.30.250.20.150.10.05005101520253035 2. plot(X,Y)
X和Y可以为向量或矩阵 x = [-3:0.2:3];
y = 1/sqrt(2*pi)*exp(-1/2*x.^2); plot(x,y) 0.40.350.30.250.20.150.10.050-3-2-10123 3. plot(X,Y,LineSpec)
LineSpec参数包括线条的形状、颜色和点的形状、颜色（见下表）。
x = [-3:0.2:3];
y = 1/sqrt(2*pi)*exp(-1/2*x.^2); plot(x,y,'r*') 0.40.350.30.250.20.150.10.050-3
-2-10123 4. ezplot(f)
f为符号表达式 syms x;
f = cos(x); ezplot(f); cos(x)10.50-0.5-1-6-4-20x246 5. ezplot(f,[min,max])
syms x y;
ezplot(x^2-y^4,[-4,4]);
x2-y4 = 043210-1-2-3-4-4y-3-2-10x1234 6. ezplot(f,[xmin, xmax, ymin, ymax])
syms x y;
ezplot(x^2-y^4,[-4,4,-2,2]); x2-y4 = 021.510.50-0.5-1-1.5-2-4y-3-2-10x1234 【三维图形绘制】
1. plot3(X,Y,Z) / plot3(X,Y,Z,LineSpec)
X,Y, Z为向量或矩阵
在命令窗口输入下面命令： t = 0:pi/50:10*pi;
plot3(sin(t),cos(t),t); grid on