matlab.doc

1x=-2*pi:0.1:2*pi;y1=sin(x);y2=sin(x+pi/3)+2;y3=cos(x);plot(x,y1,b.-);hold onplot(x,y2,r*-);plot(x,y3,g-s);h=legend(sin($x$),sin($x+pi/3$),cos($x$);xlabel($x$,Interpreter,latex)ylabel($y$,Interpreter,latex)2x=-2*pi:0.1:2*pi;y1=sin(x);y2=sin(x+pi/3)+2;y3=cos(x);subplot(3,1,1),plot(x,y1,b.-),title(sin($x$),Interpreter,latex)subplot(3,1,2),plot(x,y2,r*-),title(sin($x+pi/3$),Interpreter,latex)subplot(3,1,3),plot(x,y3,g-s),title(cos($x$),Interpreter,latex)xlabel($x$,Interpreter,latex)ylabel($y$,Interpreter,latex)3x=1:0.1*pi:2*pi; y=sin(x);plot(x,y)text(3*pi/4,sin(3*pi/4), leftarrow sin(3pi/4)=0.707)text(5*pi/4,sin(5*pi/4),sin(5pi/4)=,num2str(sin(5*pi/4),rightarrow,HorizontalAlignment, right, Fontsize, 12) ezplot(x2+y2/4=1) %画椭圆命令 6 x=0:0.1*pi:2*pi; y=sin(x); z=cos(x);plot(x,y,k-*) hold onplot(x,z, k-o) plot(x,y+z,k-h)legend(sin(x), cos(x), sin(x)+cos(x), 0)hold off %图137subplot(m,n,p) 将一个图形窗口分割成m*n个小窗口，可以通过参数p分别对若干子绘图区域进行操作，子绘图区域的编号为按行从左至右编号如果p是一个向量，则创建一坐标轴，包含所有罗列在p中的小窗口例如：在四个子图中绘制不同的三角函数图x=0:0.1*pi:2*pi; subplot(2,2,1) %第1个绘图子域plot(x,sin(x), -*); axis(0 2*pi -1 1); title(sin(x)subplot(2,2,2) %第2个绘图子域plot(x,cos(x), -o); axis(0 2*pi -1 1); title(cos(x)subplot(2,2,3) %第3个绘图子域plot(x,2*sin(x).*cos(x), -x); axis(0 2*pi -1 1); title(2sin(x)cos(x)subplot(2,2,4) %第4个绘图子域plot