Matlab-时钟绘制资料

1、Mat l ab- 时 钟 绘 制精品文档一题目请用 Matlab 编写程序，绘制一个时钟表盘和时针、分针、秒针，且时钟能根据计算机系统当 前时间，自动更新时针、分针、秒针的位置。表盘和时针、分针、秒针使用 plot 函数绘制，计算 机系统当前时间使用 clock 函数获取。二操作方法与实验步骤（一） 总体设计思想 设计时钟，根据适中的样式先画出表盘，根据数学公式画出时分刻度以及时针分针，再根 据 clock 函数读取计算机当前时间，最后加上循环语句让时钟走起来。（二） 所用到的数学公式1. 绘制表盘（圆）： x = cos （theta1）; y = sin （theta1）;2. 绘制时分

2、刻度：Plot ( 0.9*cos (theta3(i) ), 0.97*cos(theta3(i) ) ,0.9*sin (theta3(i) ),0.97*sin( theta3(i) ) );3. 绘制时针分针：theta_h=0.5 * pi-(h+m/60)/12*2*pi;plot ( 0,0.6 * cos(theta_h), 0,0.6*sin(theta_h),blue ,linewidth , 2);theta_m=0.5*pi-m/60*2*pi;plot (0,0.7*cos(theta_m),0,0.7*sin(theta_m), cyan , linewidth ,

3、 2); theta_s=0.5*pi-(s/60)*2*pi;plot (0,0.85*cos(theta_s),0,0.85*sin(theta_s), black , linewidth , 2)4. clock 读取计算机当前时间： C=clock; h=C(4); m=C(5); s=C(6);三） 程序流程图用极坐标与直角坐标的关系绘制圆盘：theta1=0:2*pi/100:2*pi;x=cos(theta1);y=sin(theta1);精品文档精品文档绘制分刻度线：plot(0.9*cos(theta3(i),0.97*cos(theta3(i),0.9*sin(theta3

4、(i),0.97*sin(theta3(i)j +读取计算机当前时间并画出时分秒针：C=clock; h=C(4); m=C(5); s=C(6); theta_h=0.5*pi-(h+m/60)/12*2*pi; plot(0,0.6*cos(theta_h),0,0.6*sin(theta_h),blue ,linewidth,2);theta_m=0.5*pi-m/60*2*pi;plot(0,0.7*cos(theta_m),0,0.7*sin(theta_m),cyan ,linewidth,2);theta_s=0.5*pi-(s/60)*2*pi;plot(0,0.85*cos(

5、theta_s),0,0.85*sin(theta_s),black, linewidth,2);加上循环使表走起来： while四） 实验代码收集于网络，如有侵权请联系管理员删除精品文档1. 利用极坐标与直角坐标的关系绘制圆theta1=0:2*pi/100:2*pi;x=cos(theta1);y=sin(theta1);h=plot(x,y);% 绘制圆set(h,linewidth,6) % 设置圆的属性holdon% 保留已经绘制的图形axisequal% 是横纵坐标系的单位长度相同2. 绘制时刻度线与分刻度线theta2=0:2*pi/12:2*pi;fori=1:length(t

6、heta2) % 循环语句绘制时刻度线 h=plot(0.8*cos(theta2(i),0.97*cos(theta2(i),0.8*sin(theta2(i),0.97*sin(theta2(i);set(h,linewidth ,3)set(h,color , black )endtheta3=0:2*pi/60:2*pi;fori=1:length(theta3) % 循 环 语 句 绘 制 分 刻 度 线 h=plot(0.9*cos(theta3(i),0.97*cos(theta3(i),0.9*sin(theta3(i),0.97*sin(theta3(i);set(h,col

7、or , black )e nd收集于网络，如有侵权请联系管理员删除精品文档3. 绘制时针分针并读取计算机当前时间C=clock; % 调用 clock 函数读取当前时间h=C(4); % clock 函数： year month day hour minute seconds 4 代表， 5 ，6 分别m=C(5); 时分秒s=C(6);theta_h=0.5*pi-(h+m/60)/12*2*pi;plot(0,0.6*cos(theta_h),0,0.6*sin(theta_h),blue ,linewidth,2);theta_m=0.5*pi-m/60*2*pi;plot(0,0.7

8、*cos(theta_m),0,0.7*sin(theta_m),cyan ,linewidth,2);theta_s=0.5*pi-(s/60)*2*pi;plot(0,0.85*cos(theta_s),0,0.85*sin(theta_s),black, linewidth,2);收集于网络，如有侵权请联系管理员删除精品文档4. 让时钟走起来完成实验while (1)theta1=0:2*pi/100:2*pi;X=cos(theta1);y=sin(theta1);h=plot(x,y);set(h, linewidth ,6)hold onaxis equalplot(0,0, .

9、, Markersize ,50); theta2=0:2*pi/12:2*pi;for i=1:length(theta2) h=plot(0.8*cos(theta2(i),0.97*cos(theta2(i),0.8*sin(theta2(i), 0.97*sin(theta2(i);set(h, linewidth ,3)set(h, color , black )end theta3=0:2*pi/60:2*pi;for i=1:length(theta3) h=plot(0.9*cos(theta3(i),0.97*cos(theta3(i),0.9*sin(theta3(i),0

10、.97*sin(theta3(i);set(h, color , black )endC=clock;h=C(4);m=C(5);s=C(6);theta_h=0.5*pi-(h+m/60)/12*2*pi; plot(0,0.6*cos(theta_h),0,0.6*sin(theta_h), theta_m=0.5*pi-m/60*2*pi;plot(0,0.7*cos(theta_m),0,0.7*sin(theta_m), theta_s=0.5*pi-(s/60)*2*pi;plot(0,0.85*cos(theta_s),0,0.85*sin(theta_s), pause(1);clf; % 清除上一步的图像blue , linewidth