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x=-pi:.1:pi; y=sin(x); y1=sin(x); y2=cos(x); h=line(x,y1,'LineStyle',':','Color','g'); line(x,y2,'LineStyle','--','Color','b'); xlabel('-\pi \leq \Theta \leq \pi') ylabel('sin(\Theta)') title(

N=128; % 采样点数 T=1; % 采样时间终点 t=linspace(0,T,N); % 给出N个采样时间ti(I=1:N) x=12*sin(2*pi*10*t+pi/4)+5*cos(2*pi*40*t); % 求各采样点样本值x dt

x=0:pi/100:2*pi; y1=2*exp(-0.5*x); y2=cos(4*pi*x); plot(x,y1,x,y2) title('x from 0 to 2{\pi}'); %加图形标题 xlabel('Variable X'); %加X轴说明 ylabel('Variable Y');

x=0:pi/10:2*pi; y=2*sin(x); subplot(2,2,1);bar(x,y,'g'); title('bar(x,y,''g'')');axis([0,7,-2,2]); subplot(2,2,2);stairs(x,y,'b'); title('stairs(x,y,''b'')');axis([0,7,-2,2]); subplot(2,2,3);ste

x=0:pi/50:2*pi; y=sin(x); z=cos(x); plot(x,y,'r',x,z,'g'); %绘制两根不同曲线 Hl=get(gca,'Children'); %获取两曲线句柄向量Hl for k=1:size(Hl) if get(Hl(k),'Color')==[0 1 0] %[0 1 0]代表

x=0:pi/100:2*pi; y1=0.2*exp(-0.5*x).*cos(4*pi*x); plot(x,y1) hold on y2=2*exp(-0.5*x).*cos(pi*x); plot(x,y2); hold off

clear Fs=100; t=(1:100)/Fs; s1=sin(2*pi*t*5); s2=sin(2*pi*t*15); s3=sin(2*pi*t*30); s=s1+s2+s3; plot(t,s); xlabel('Time(seconds)'); ylabel('Time waveform');

%%%%%%%%%%%%%%%%%%%%%%%%% 估计信号源数目 %%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%% clear;clc l=1.8;%波长 d=0.5*l;%阵元间距 xx=pi/12;yy=pi/6;tt=pi/4; %三个信号的入射角 % 8 阵元 A=[ 1 exp(-j*2*pi*d*sin(xx)/l)

% squirrel-cage induction machine picture clc,clear, dir=[0 0 1];e=0; q=0:pi/20:2*pi; z1=ones(size(q)); lv=[cos(60*pi/180),cos(90*pi/180),cos(120*pi/180)]; figure('units','normalized','number

% DC MACHINE CONFIGURATION clear,clc,close all warning off aviwave=avifile('dcm1.avi','compression','cinepak'); figure('units','normalized','Position',[.25 .09 .73 .73],'Name','DC MACHINE',...